CN106977511B

CN106977511B - A kind of aminopropyl replaces tropane aminated compounds, its pharmaceutical composition and its preparation method and application

Info

Publication number: CN106977511B
Application number: CN201710142025.9A
Authority: CN
Inventors: 龙亚秋; 樊兴; 谢欣
Original assignee: Shanghai Institute of Materia Medica of CAS
Current assignee: Shanghai Institute of Materia Medica of CAS
Priority date: 2011-12-19
Filing date: 2011-12-19
Publication date: 2019-04-12
Anticipated expiration: 2031-12-19
Also published as: CN106977511A; CN103159754A

Abstract

The invention belongs to field of medicinal chemistry, disclose 8- shown in following general formula (I) (3- aminopropyl) -3- extroversion -8- azabicyclo [3.2.1] octane -3- aminoamide compound, its pharmaceutical composition and purposes.Such compound or its pharmaceutically acceptable salt can be used as the antagonist of CCR5, treatment is used to prepare by the drug of the CCR5 disease mediated, for the drug of preparation treatment HIV infection, asthma, rheumatoid arthritis, autoimmune disease and chronic obstructive pulmonary disease (COPD).

Description

Amino propyl substituted tropane amine compound, pharmaceutical composition thereof, preparation method and application thereof

The application is 'an amino propyl substituted tropane amine compound, a pharmaceutical composition thereof, a preparation method thereof and application', and is a divisional application of patent application, wherein the application number of a parent application is '201110427904.9', and the application date is 2011, 12 and 19 days.

Technical Field

The invention belongs to the field of pharmaceutical chemistry, and particularly relates to 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compounds, a pharmaceutical composition thereof, a preparation method and application thereof, wherein the compounds can be used as CCR5 antagonists.

Background

Chemokines are cytokines that direct the directional migration of lymphocytes and play an important role in inflammatory responses, leukocyte extravasation, tissue infiltration, tumorigenesis, and embryonic development. Chemokines belong to a large family of secreted signaling molecules with molecular weights of approximately 8 to 14 kDa. There are currently about 45 members of this family, and their common features are: contains four position-conserved cysteines (Cys). This family is divided into four groups according to whether there are additional amino acids between the two Cys near the N-terminus: CC. CXC, C-X₃Among them, the CC class (also known as β -chemokine) and the CXC class (also known as α -chemokine) are the two most important classes.

The current standard nomenclature for chemokine receptors is based on the characteristics of the chemokine to which they specifically bind (e.g., if the ligand is the CC chemokine subfamily, it is designated CCR.) the receptor for chemokines belongs to the 7 transmembrane G protein-coupled receptor family (GPCR) which is extracellular at the N-terminus and intracellular at the C-terminus, containing seven well-conserved transmembrane regions composed of α helices which, when bound to an agonist, couple to the G protein, thereby allowing extracellular signaling to be transmitted into the cell.

There are 19 chemokine receptors currently found, which are CCR1-11, CXCR1-6，XCR1，CX₃CR 1. Chemokine receptors are considered important mediators of inflammatory responses and autoimmune diseases (Gerard et al, Nat Immunol,2,108-15(2001)), and thus modulators of chemokine receptors, including agonists and antagonists, can be used in a variety of diseases, such as inflammatory or allergic diseases, allergic responses, autoimmune diseases, inflammatory bowel diseases, scleroderma, eosinophilic myositis, tumorigenesis and metastasis, and the like.

CCR5, an endogenous agonist of the chemokine receptor family members, RANTES, MIP-1 α, MIP-1 β, expressed on dendritic cells of peripheral blood origin, T lymphocytes, monocytes, macrophages and immune and inflammatory cells involved in the maintenance of long-term inflammatory responses, thus modulating the function of CCR5 may modulate T cell recruitment to the site of impairment of inflammatory responses, thus providing a new target for the treatment of inflammatory and autoimmune diseases, e.g., CCR5 deletion protects mice from DSS-induced severe inflammation and mucosal damage (Andres et al, J Immunol.,164,6303-12 (2000)); small molecule antagonist TAK-779 of CCR5 inhibits collagen-induced arthritis in mice (Yang et al, Eur J munol, 32,2124-32 (2002). antagonists of CCR5 may be useful in the treatment of asthma and disorders (e.g., local dermatitis), local inflammatory diseases, inflammatory diseases such as rheumatoid arthritis, inflammatory diseases, rheumatoid arthritis (psoriasis, rheumatoid arthritis), inflammatory diseases, rheumatoid arthritis, inflammatory diseases, rheumatoid arthritis, inflammatory diseases of psoriasis, rheumatoid arthritis, inflammatory diseases⁸⁺T cells are associated with Chronic Obstructive Pulmonary Disease (COPD) (Cosio et al, Chest,121,160S-165S, (2002)), and therefore antagonists of CCR5 may also be useful in the treatment of COPD.

In addition to its role in inflammation and immune responses, chemokine receptors may also be important receptors for the invasion of cells by certain parasites and viruses. For example, Duffy receptors are receptors for plasmodium to enter erythrocytes, and people lacking Duffy receptors are less likely to develop malaria. More importantly, several chemokine receptors are involved in HIV entry, and are known as co-receptors for HIV.

Further studies have found that additional molecules known as HIV entry co-receptors are CCR5, CXCR4, CCR2b, CCR3, CCR8 and the orphan receptor V28, STRL-33, GPR1, GPR15 and APJ (Domes et al, Virology,235,179-90, (1997)) in the chemokine receptor, CCR5 and CXCR4 are the major co-receptors for HIV entry in vivo, CCR3 may also be involved in the entry of a proportion of HIV, CCR5 is a co-receptor for macrophage tropism (M-tropism) HIV-1 and CXCR4 is a co-receptor for HIV-1 for T-cell tropism (T-tropism) in vivo CCR 465 plays an important role in the transmission of HIV, substances that modulate CCR5 can affect M HIV-1 in the early stage of HIV-1 and bind to HIV-1 in vitro with very effective inhibitors of HIV entry into cells via CCR 6324 and CCR 5-binding to HIV-receptor molecules which inhibit HIV entry into cells in vitro.

In view of the above, there is an urgent need in the art to develop compounds that are CCR5 antagonists with potential pharmaceutical uses.

Disclosure of Invention

The present inventors have conducted extensive and intensive studies on compounds having CCR5 antagonistic activity, and have designed and synthesized compounds represented by the general formula (I). The test results show that the compounds are potent CCR5 antagonists, have intracellular anti-HIV-1 virus activity, can be used as inhibitors of HIV virus entry and can be developed into anti-AIDS drugs, and the invention is completed on the basis.

Therefore, the invention aims to provide 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amides shown as a general formula (I) as CCR5 antagonists or pharmaceutically acceptable salts thereof.

Another object of the present invention is to provide a pharmaceutical composition comprising a therapeutically effective amount of one or more compounds of formula (I) or a pharmaceutically acceptable salt thereof.

The invention also aims to provide application of the compound or the pharmaceutically acceptable salt thereof as a CCR5 antagonist in preparation of medicaments for treating CCR5 mediated diseases.

In a first aspect of the invention, there is provided an 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-aminoamide compound represented by general formula (I) or a pharmaceutically acceptable salt thereof,

wherein,

R₁the following groups unsubstituted or substituted with 1 to 3 substituents: phenyl, benzyl, naphthyl, the substituent is selected from C₁-C₄Alkyl, halogen and CF₃；

R₂Is hydrogen, C₁-C₆Alkyl radical, C₂-C₆Alkenyl or R₂And connected N, Y, R₃And R₄Are formed together

Y is

R₃Is a direct bond, NH or C₁-C₆An alkylene group;

R₄the following groups unsubstituted or substituted with 1 to 3 substituents: phenyl, benzyl, naphthyl, 5-10 membered aromatic heterocyclic group orA 4-7 membered saturated heterocyclic group, said aromatic heterocyclic group and saturated heterocyclic group comprising 1-3 heteroatoms selected from N and O, and said heteroatoms being optionally oxidized, said substituents being selected from the group consisting of the following atoms or groups: c₁-C₆Alkyl radical, C₁-C₆Alkoxy, halogen, hydroxy, CF₃、SO₂NR₅R₆And NR is₅R₆May together form a 4-7 membered saturated heterocyclic group, said heterocyclic ring including an additional 0-3 heteroatoms selected from N, O and S;

R₅is hydrogen, hydroxy or C₁-C₆An alkyl group;

R₆is hydrogen or C₁-C₆An alkyl group.

In a preferred embodiment of the present invention, the compound of the present invention is a compound represented by the following general formula (II):

wherein,

R₇and R₈Each independently selected from C₁-C₄Alkyl, halogen and CF₃Performing the following steps;

Y is

R₃Is a direct bond, NH or C₁-C₆An alkylene group;

R₄the following groups unsubstituted or substituted with 1 to 3 substituents: phenyl, a 5-to 10-membered aromatic heterocyclic group or a 4-to 7-membered saturated heterocyclic group, said aromatic heterocyclic group and saturated heterocyclic group comprising 1 to 3 heteroatoms selected from N and O, and said heteroatoms being optionally oxidized, said substituents being selected from the group consisting of the following atoms or groups: c₁-C₆Alkyl radical, C₁-C₆Alkoxy, halogen, hydroxy, CF₃、SO₂NR₅R₆And NR is₅R₆May together form a 4-7 membered saturated heterocyclic group, said heterocyclic ring including an additional 0-3 heteroatoms selected from N, O and S;

R₅is hydrogen, hydroxy or C₁-C₆An alkyl group;

R₆is hydrogen or C₁-C₆An alkyl group.

More preferred for the compound represented by the general formula (II):

R₇and R₈Each independently selected from C₁-C₄Alkyl and halogen;

Y is

R₃Is a direct bond, NHOr C₁-C₆An alkylene group;

R₄the following groups unsubstituted or substituted with 1 to 3 substituents: phenyl, 5-9 membered aromatic heterocyclic group or 5-6 membered saturated heterocyclic group, said aromatic heterocyclic group and saturated heterocyclic group comprising 1-2 heteroatoms selected from N and O, and said heteroatoms being optionally oxidized, said substituents being selected from the group consisting of the following atoms or groups: c₁-C₆Alkyl radical, C₁-C₆Alkoxy, halogen, hydroxy, CF₃、SO₂NR₅R₆And NR is₅R₆May together form a 5-6 membered saturated heterocyclic group, said heterocyclic group including an additional 0-1 heteroatoms selected from N, O and S;

R₅is hydrogen, hydroxy or C₁-C₆An alkyl group;

R₆is hydrogen or C₁-C₆An alkyl group.

For the compound represented by the general formula (II), most preferred are:

R₇and R₈Each independently selected from C₁-C₄Alkyl, halogen;

R₂is hydrogen, ethyl, propenyl or R₂And connected N, Y, R₃And R₄Are formed together

Y is

R₃Is a direct bond, NH or methylene;

R₄is unsubstituted or substituted by 1 to 3The following groups substituted with substituents: phenyl, morpholinyl, pyrrolyl, indolyl, pyrrolinyl, pyrimidinyl, pyridinyl, said substituents being selected from the following atoms or groups: c₁-C₆Alkyl radical, C₁-C₆Alkoxy, halogen, hydroxy, CF₃、SO₂NR₅R₆And NR is₅R₆May together form a piperidinyl or morpholinyl group; or R4 is

R₅Is hydrogen;

R₆is methyl, tert-butyl or n-butyl.

In the present invention, particularly preferred specific compounds are the compounds prepared in the examples of the present invention:

the pharmaceutically acceptable salt of the 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compound is formed by the compound and hydrochloric acid, tartaric acid, citric acid, hydrobromic acid, hydroiodic acid, nitric acid, phosphoric acid, sulfuric acid or methanesulfonic acid according to a conventional salt forming method in pharmacy.

The preparation method of the compound of the invention can be prepared by the following steps:

the general process comprises the following steps:

wherein, Y, R₁、R₂、R₃And R₄Is as defined above;

p is tert-butyloxycarbonyl, benzyloxycarbonyl, benzyl, 9-fluorenylmethyloxycarbonyl, CH₃CO and CH₃An amino protecting group of one of the OCOs;

step a): in the presence of a base, R₁NH₂Carrying out nucleophilic substitution reaction with 1-bromo-3-chloropropane to obtain an N-substituted 3-chloropropylamine compound I;

step b): carrying out coupling reaction on the N-substituted 3-chloropropylamine compound I and 4-acetyl-4-piperidine formyl chloride to obtain an N-trisubstituted 3-chloropropylamine compound II;

step c): in the presence of alkali, a secondary amine compound and an N-trisubstituted 3-chloropropylamine compound II are subjected to nucleophilic substitution reaction to obtain a protected 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compound III;

step d): performing acid hydrolysis or alkali hydrolysis or hydrogenolysis on the compound III according to the amino protecting group, and removing the amino protecting group to obtain a compound IV;

step e): free amine compound IV and acid generate coupling reaction, or generate substitution reaction with acyl chloride, or generate addition reaction with isocyanate, or generate nucleophilic substitution reaction with halohydrocarbon to generate compound V, namely the compound 8- (3-aminopropyl) -3-outward-8-azabicyclo [3.2.1] octane-3-amino amide compound; or,

step f): in the presence of alkali, N-trisubstituted 3-chloropropylamine compound II and 8-azabicyclo [3.2.1] octane-3-amino amide compound undergo nucleophilic substitution reaction to generate a compound V, namely the compound 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compound.

The preparation process of the secondary amine compound (3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compound) in the reaction step c) is as follows:

wherein R is₂And P is as defined above; p₁Commonly used protecting groups for amino groups, e.g. Boc, Cbz, Bn, Fmoc, CH₃CO or CH₃OCO and the like;

protected amino compounds are Robinson-Schopf reacted with 3-carbonyl-1, 5-glutaric acid and 2, 5-dimethoxytetrahydrofuran to give protected 8-azabicyclo [3.2.1]Octane-3-one VI, obtaining a compound VII through reaction for forming oxime, and obtaining the protected 3-exo-8-azabicyclo [3.2.1] through reduction]Octane-3-amino compounds VIII by introducing different substituents R₂And protecting secondary amine to obtain a compound X, and deprotecting the compound X to obtain an intermediate 3-exo-8-azabicyclo [3.2.1]]Octane-3-aminoamide compound XI.

In a second aspect of the invention, there is provided a pharmaceutical composition comprising a therapeutically effective amount of one or more compounds of formula (i) or a pharmaceutically acceptable salt thereof, and may further comprise a pharmaceutically acceptable carrier, and may further comprise a protease inhibitor and/or a reverse transcriptase inhibitor.

In a third aspect of the invention there is provided the use of a compound of formula (i) or a pharmaceutically acceptable salt thereof according to the invention as an antagonist of CCR5 in the manufacture of a medicament for the treatment of a disease mediated by CCR 5. More particularly for the preparation of a medicament for the treatment of HIV infection, asthma, rheumatoid arthritis, autoimmune diseases and Chronic Obstructive Pulmonary Disease (COPD).

Detailed Description

The invention is further described with reference to specific examples. It should be understood that these examples are only for illustrating the present invention and do not limit the scope of the present invention.

Preparation examples

Example 1

Compound 7 a: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (phenylsulphonylamino) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 3-chloro-N- (3-chloropropyl) -4-methylaniline

To a solution of 3-chloro-4-methylaniline (14.16g,100mmol) in DMF (N, N-dimethylformamide) (10mL) were added 1-bromo-3-chloropropane (30.5mL,300mmol), potassium iodide (1.66g,10mmol) and triethylamine (60 mL). The mixture was stirred at room temperature for 3 days. The low-boiling solvent is then evaporated to dryness, diluted with diethyl ether and washed with saturated brine, and the separated organic phase is dried over sodium sulfate and concentrated under reduced pressure. The concentrate was chromatographed (petroleum ether/ethyl acetate 25/1, v/v) to give product 1 as a light brown oil (18.64g, 86% yield).¹HNMR(CDCl₃,300MHz)δ:7.00(d,1H,J＝8.1Hz),6.63(d,1H,J＝2.4Hz),6.44(dd,1H,J＝2.4Hz,5.7Hz),3.64(t,2H,J＝6.3Hz),3.29(t,2H,J＝6.6Hz),2.45(s,3H),2.09-2.01(m,2H)。

Step 2: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3-chloropropyl) -4-piperidinecarboxamide

Compound 1(2.18g,10mmol) prepared above was dissolved in dichloromethane (50mL), and triethylamine (5.53mL,40mmol) and 1-acetyl-4-piperidinecarbonyl chloride (5.69g,30mmol) were added to the solution in this order under ice-cooling. The mixture was stirred at the same temperature for 1 hour. Saturated aqueous sodium bicarbonate (40mL) was added under ice cooling and diluted with dichloromethane (50mL), the organic phase was separated, dried over sodium sulfate and concentrated. The concentrate was chromatographed (dichloromethane/ethyl acetate 1/1, v/v) to give product 2 as a light brown oil (2.6g, 70% yield).¹HNMR(CDCl₃,300MHz)δ:7.31(d,1H,J＝8.1Hz),7.18(d,1H,J＝2.1Hz),6.98(dd,1H,J＝1.8Hz,6.0Hz),4.53-4.50(m,1H),3.77(t,2H,J＝7.2Hz),3.53(t,2H,J＝6.3Hz),2.85(br-s,1H),2.43(s,3H),2.41-2.34(m,2H),2.05(s,3H),2.00(m,3H),1.84-1.54(m,4H)。

And step 3: 8-benzyl-3-exo-8-azabicyclo [3.2.1] oct-3-carbamic acid tert-butyl ester

To 8-benzyl-3-exo-8-azabicyclo [3.2.1]]To a solution of oct-3-amine (7.231g, 33.2mmol) in dichloromethane (100mL) were added di-tert-butyl dicarbonate (7.95g, 36.5mmol) and triethylamine (5.5mL, 39.8 mmol). The resulting mixture was stirred under reflux for 12 hours, the tetrahydrofuran was removed under reduced pressure, and the residue was diluted with methylene chloride (100mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was chromatographed (petroleum ether/ethyl acetate 1/1, v/v) to give product 3 as a white solid (8.664g, 82% yield).¹HNMR(CDCl₃,300MHz)δ:7.37-7.23(m,5H),4.32(br,1H),3.81(br,1H),3.53(s,2H),3.21-3.19(m,2H),2.04-2.00(m,2H),1.84-1.77(m,2H),1.70-1.66(m,2H),1.52-1.48(m,2H),1.43(s,9H)。

And 4, step 4: 3-Exo-8-azabicyclo [3.2.1] oct-3-carbamic acid tert-butyl ester

To a solution of compound 3(954mg, 3mmol) prepared above in methanol (10mL) was added 10% palladium on carbon (95mg) and ammonium formate (1323mg, 21 mmol). The resulting mixture was stirred at reflux for 12 hours, the methanol was removed under reduced pressure and the residue was taken upDilute dichloromethane (10mL), wash with saturated brine (10mL), dry over anhydrous sodium sulfate, and concentrate to give product 4 as a white solid (667mg, 92% yield).¹HNMR(CDCl₃,300MHz)δ:4.64(br,1H),3.87-3.70(m,3H),2.06-1.95(m,4H),1.87-1.85(m,2H),1.77-1.68(m,2H),1.43(s,9H)。

And 5: 8- (3- (1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide) propyl) 3-exo-8-azabicyclo [3.2.1] oct-3-carbamic acid tert-butyl ester

Compound 4(937mg, 3.87mmol) prepared above was dissolved in acetonitrile (20mL), and compound 2(1440mg, 3.87mmol), potassium iodide (643mg,3.87mmol) and potassium carbonate (1603mg, 11.62mmol) were added to the solution in this order. Heated to reflux and reacted for 6 hours and then cooled to room temperature. Acetonitrile was removed under reduced pressure, diluted with dichloromethane (20mL), and washed with saturated brine (20 mL). The organic phase was separated, dried over sodium sulfate and concentrated. The concentrate was separated by column chromatography (dichloromethane/methanol-20/1, v/v) to give product 5 as a white solid (960mg, yield 43%).¹HNMR(CDCl₃,300MHz)δ:7.38-7.35(m,1H),7.31-7.26(m,2H),5.13(br,1H),4.02-3.97(m,1H),3.85-3.74(m,4H),3.66-3.60(m,1H),2.94-2.81(m,3H),2.41(s,3H),2.24-2.16(m,3H),2.04(s,3H),1.79-1.63(m,14H),1.42(s,9H)。

Step 6: 1-acetyl-N- (3- (3-exo-amino-8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 5(57mg, 0.1mmol) prepared above was dissolved in dichloromethane (2mL), trifluoroacetic acid (46uL, 0.6mmol) was added, and the mixture was stirred at room temperature for 8 hours. Poured into water (4mL), the aqueous phase was adjusted to pH 12 with sodium hydroxide, extracted 2 times with dichloromethane (5mL), the organic phases combined, washed with saturated brine (5mL), dried over sodium sulfate, and concentrated to give product 6 as a white solid (33mg, 69% yield).

And 7: compound 7 a: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (phenylsulphonylamino) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

To a solution of compound 6(103mg, 0.22mmol) prepared in example 1 above in dichloromethane (4mL) was added sodium bicarbonate (28mg, 0.33mmol), the mixture was cooled to 0 deg.C and benzenesulfonyl chloride (48mg, 0.27mmol) was added dropwise and stirring was continued at the same temperature for 1 hour. The reaction was diluted with dichloromethane, washed with brine, and the organic phase was dried over sodium sulfate and concentrated under reduced pressure. The concentrate was chromatographed (dichloromethane/methanol-30/1 to 5/1, v/v) to give product 7a as a white foamy solid (96mg, 73% yield).¹HNMR(CD₃OD,300MHz):δ1.56-1.90(m,14H),2.05(s,3H),2.12-2.16(m,2H),2.41(s,3H),2.82-2.92(m,3H),3.52-3.60(m,1H),3.70-3.74(m,4H),3.82-3.87(m,1H),4.39-4.44(m,1H),7.22(dd,1H,J＝1.8Hz,8.1Hz),7.43-7.45(m,2H),7.54-7.64(m,3H),7.88-7.90(m,2H).¹³CNMR(CD₃OD,100MHz)δ:177.8,171.9,143.5,142.1,138.8,136.9,134.3,134.0,130.9,130.0,128.4,127.4,62.4,48.5,47.2,45.8,42.3,41.2,38.0,30.4,29.8,26.3,25.4,21.7,20.3.MS(EI):m/z 600(M)⁺.

The reaction conditions of the following examples 2 to 4 were similar to those of example 1, and the last step was conducted using p-fluorobenzenesulfonyl chloride, 3, 4-dichlorobenzenesulfonyl chloride or p-methoxybenzenesulfonyl chloride instead of benzenesulfonyl chloride.

Example 2

Compound 7 b: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (4-fluorobenzenesulfonylamino) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

In step 1, 4-fluorobenzenesulfonyl chloride was used instead of benzenesulfonyl chloride in step 7 of example 1.

White solid (87mg, yield 82%).¹HNMR(300MHz,CD₃OD):δ1.54-1.71(m,12H),1.94-1.98(m,2H),2.02(s,3H),2.31-2.35(m,1H),2.38(s,3H),2.42-2.52(m,3H),2.79-2.89(m,1H),3.32-3.43(m,3H),3.64-3.69(m,2H),3.80-3.85(m,1H),4.37-4.42(m,1H),7.15(dd,1H,J＝1.5Hz,7.8Hz),7.27(t,2H,J＝8.4Hz),7.39-7.42(m,2H),7.86-7.91(m,2H).¹³CNMR(CD₃OD,100MHz)δ:177.1,171.9,166.8(d,¹J_CF＝251.0Hz),142.5,140.2,138.5,136.7,133.9,131.2(d,³J_CF＝9.1Hz),130.1,128.4,117.8(d,²J_CF＝22.3Hz),61.0,52.2,47.2,46.8,42.4,41.3,38.6,30.4,29.8,27.2,27.0,21.6,20.3.MS(EI):m/z 618(M)⁺.

Example 3

Compound 7 c: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (3, 4-dichlorophenylsulfonylamino) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

3, 4-Dichlorobenzenesulfonyl chloride was used in place of benzenesulfonyl chloride in step 7 of example 1 in step 1.

White solid (89mg, yield 82%).¹HNMR(300MHz,CD₃OD):δ1.55-1.73(m,4H),1.84-1.97(m,9H),2.05(s,3H),2.20-2.24(m,2H),2.42(s,3H),2.48-2.54(m,1H),2.85-3.01(m,3H),3.62-3.90(m,6H),4.40-4.45(m,1H),7.23(dd,1H,J＝1.8Hz,8.1Hz),7.44-7.47(m,2H),7.74-7.83(m,2H),8.05(d,1H,J＝1.8Hz).¹³CNMR(CD₃OD,100MHz)δ:178.0,172.0,144.0,142.0,138.9,138.5,136.9,135.0,134.1,133.2,130.3,130.0,128.4,128.0,62.8,52.3,52.2,48.4,47.2,45.8,42.3,41.2,38.0,30.4,29.8,26.1,25.1,21.6,20.3.MS(ESI):m/z671.8(M+1)⁺.

Example 4

Compound 7 d: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (4-methoxyphenylsulfonylamino) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

In step 1, 4-methoxybenzenesulfonyl chloride was used instead of benzenesulfonyl chloride in step 7 of example 1.

White solid (92mg, yield 76%).¹HNMR(300MHz,CD₃OD):δ1.53-1.83(m,14H),2.00-2.02(m,1H),2.04(s,3H),2.41(s,3H),2.45-2.52(m,2H),2.58-2.63(m,2H),2.82-2.92(m,1H),3.39-3.46(m,3H),3.67-3.72(m,2H),3.87(s,3H),4.39-4.45(m,1H),.7.07(d,2H,J＝9.0Hz),7.17-7.20(m,1H),7.42-7.44(m,2H),7.79(d,2H,J＝9.0Hz).¹³CNMR(CD₃OD,100MHz)δ:177.3,171.9,164.9,142.4,138.6,136.8,135.1,133.9,130.5,130.1,128.4,115.9,61.4,56.7,52.2,49.0,47.2,46.4,42.3,41.3,38.4,30.4,29.8,27.0,26.6,21.6,20.3.MS(EI):m/z 630(M)⁺.

Example 5

Compound 8 a: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (3- (4-fluorophenyl) ureido) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

And 7: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (3- (4-fluorophenyl) ureido) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

To a solution of compound 6(60mg, 0.13mmol) prepared in example 1 above in dichloromethane (3mL) was added p-fluorophenyl isocyanate (19mg, 0.13mmol) at the same temperatureStirring was continued for 4 hours. The reaction was diluted with dichloromethane, washed with brine, and the organic phase was dried over sodium sulfate and concentrated under reduced pressure. The concentrate was subjected to column chromatography (dichloromethane/methanol 10/1, v/v) to give the product as a white foamy solid (58mg, yield 79%)¹HNMR(300MHz,CD₃OD):δ1.55-1.90(m,14H),2.05(s,3H),2.34-2.39(m,1H),2.42(s,3H),2.52-2.58(m,3H),2.83-2.93(m,1H),3.41-3.46(m,2H),3.70-3.75(m,2H),3.83-3.89(m,1H),3.94-4.02(m,1H),4.40-4.45(m,1H),6.97(t,2H,J＝8.7Hz),7.19-7.22(m,1H),7.28-7.33(m,2H),7.44-7.56(m,2H).¹³CNMR(CD₃OD,100MHz)δ:177.0,171.9,160.3(d,¹J_CF＝238.8Hz),158.1,142.5,138.5,137.5,136.8,133.9,130.2,128.5,122.4(d,³J_CF＝7.8Hz),116.6(d,²J_CF＝22.6Hz),61.2,47.2,42.7,42.4,41.3,38.6,30.4,29.8,27.3,21.6,20.3.MS(ESI):m/z 598.8(M+1)⁺.

Example 6

Compound 8 b: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (3- (3, 4-dichlorophenyl) ureido) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

3, 4-dichlorophenyl isocyanate was used in step 1 instead of benzenesulfonyl chloride in step 7 of example 1.

White solid (42mg, yield 36%).¹HNMR(300MHz,CD₃OD):δ1.54-1.90(m,14H),2.04(s,3H),2.34-2.38(m,1H),2.42(s,3H),2.50-2.61(m,3H),2.83-2.91(m,1H),3.45(br,2H),3.71-3.76(m,2H),3.83-3.88(m,1H),3.94-4.00(m,1H),4.40-4.45(m,1H),7.16-7.22(m,2H),7.34(d,1H,J＝8.7Hz),7.45(br,2H),7.70(s,1H).¹³CNMR(CD₃OD,100MHz)δ:177.0,171.9,157.3,142.5,141.6,138.5,136.8,133.9,133.7,131.9,130.2,128.4,126.1,121.5,119.7,61.3,47.2,42.7,42.4,41.3,38.4,30.4,29.8,27.2,21.6,20.3.MS(ESI):m/z 648.8(M+1)⁺.

Example 7

Compound 10 a: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (2-morpholinoacetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (2-chloroacetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

To a solution of compound 6(820mg,1.78mmol) prepared above in dichloromethane (20mL) was added chloroacetyl chloride (0.21mL,2.67mmol) and N, N-diisopropylethylamine (0.62mL,3.57 mmol). The mixture was stirred at room temperature overnight. Then poured into ice water, extracted with dichloromethane, the organic phase washed with saturated brine, the separated organic phase dried over sodium sulfate and concentrated under reduced pressure. The concentrate was chromatographed (dichloromethane/methanol-10/1, v/v) to give the product as a brown foamy solid (666mg, 70% yield).

Step 2: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (2-morpholinoacetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

To a solution of compound 9(108mg,0.2mmol) prepared above in acetonitrile (20mL) was added potassium carbonate (56mg,0.4mmol) and morpholine (27mg,0.3 mmol). The mixture was stirred at room temperature overnight. The organic phase was washed with saturated brine, and the separated organic phase was dried over sodium sulfate and concentrated under reduced pressure. The concentrate was chromatographed (dichloromethane/methanol-10/1, v/v) to give the product as a pale yellow gummy solid (42mg, 36% yield).¹HNMR(300MHz,CD₃OD):δ1.58-1.89(m,12H),2.05(s,3H),2.10-2.13(m,2H),2.35-2.39(m,1H),2.42(s,3H),2.47-2.50(m,5H),2.70-2.75(m,2H),2.84-2.93(m,1H),3.00(s,2H),3.60(br,2H),3.69-3.77(m,6H),3.84-3.89(m,1H),4.12-4.22(m,1H),4.41-4.46(m,1H),7.26(dd,1H,J＝1.5Hz,8.1Hz),7.44-7.47(m,2H).

Example 8

Compound 10 b: n- (3- (3- (2- (1H-pyrrol-1-yl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Pyrrole was used in step 1 instead of morpholine in step 2 of example 7.

Pale yellow gum solid (125mg, 74% yield).¹HNMR(300MHz,CD₃OD):δ1.54-1.78(m,4H),1.83-1.96(m,8H),2.05(s,3H),2.15-2.19(m,2H),2.35-2.39(m,1H),2.42(s,3H),2.46-2.54(m,2H),2.83-2.91(m,3H),3.73-3.88(m,5H),4.40-4.45(m,1H),4.55(s,2H),6.07-6.08(m,2H),6.67-6.68(m,2H),7.25(dd,1H,J＝1.5Hz,8.1Hz),7.44-7.47(m,2H).

Example 9

Compound 10 c: n- (3- (3- (2- (1H-indol-1-yl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Indole was used in step 1 instead of morpholine in step 2 of example 7.

White solid (51mg,yield 28%).¹HNMR(300MHz,CD₃OD):δ1.52-1.76(m,4H),1.90-2.01(m,8H),2.04(s,3H),2.18-2.21(m,2H),2.33-2.38(m,1H),2.42(s,3H),2.48-2.52(m,1H),2.80-2.88(m,1H),2.98-3.03(m,2H),3.72-3.92(m,5H),4.13-4.25(m,1H),4.39-4.44(m,1H),4.82(s,2H),6.47(d,1H,J＝2.4Hz),7.01-7.06(m,1H),7.13(dt,1H,J＝1.2Hz,7.8Hz),7.20(d,1H,J＝3.0Hz),7.25-7.32(m,2H),7.43(d,1H,J＝7.8Hz),7.50(d,1H,J＝2.1Hz),7.54(d,1H,J＝7.5Hz).

Example 10

Compound 10 d: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-exo- (2- (pyrrolin-1-yl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Pyrrolidine was used in step 1 instead of morpholine in step 2 of example 7.

Colorless gummy solid (110mg, yield 50%).¹HNMR(300MHz,CD₃OD):δ1.54-1.79(m,17H),1.97-2.00(m,2H),2.03(s,3H),2.32-2.37(m,1H),2.40(s,3H),2.44-2.63(m,7H),2.81-2.91(m,1H),3.11(s,2H),3.31(br,1H),3.68-3.73(m,2H),3.82-3.87(m,1H),4.03-4.14(m,1H),4.39-4.43(m,1H),7.18-7.21(m,1H),7.42-7.44(m,2H).

Example 11

Compound 15 a: n- (3- (3- (3-hydro-imidazo [4, 5-and ] pyridin-3-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: 8-benzyl-N- (3-nitropyridin-2-yl) -8-azabicyclo [3.2.1] oct-3-amine

To 8-benzyl-3-exo-8-azabicyclo [3.2.1]]To a solution of octan-3-amine (436mg,2mmol) in tetrahydrofuran (10mL) were added 2-chloro-3-nitropyridine (333mg,2.1mmol) and N, N-diisopropylethylamine (0.38mL,2.2 mmol). The resulting mixture was stirred under reflux for 12 hours, the tetrahydrofuran was removed under reduced pressure, and the residue was diluted with methylene chloride (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was chromatographed (dichloromethane/methanol-40/1, v/v) to give product 11 as a yellow solid (396mg, 59% yield).¹HNMR(300MHz,CD₃OD):δ1.71-1.80(m,2H),1.87-1.92(m,2H),2.00-2.06(m,2H),2.19-2.24(m,2H),3.39-3.45(m,3H),3.71(s,2H),6.69-6.73(m,1H),7.28-7.45(m,5H),8.40-8.46(m,2H).

Step 2: n2- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) pyridine-2, 3-diamine

To a solution of the above-synthesized compound 11(503mg,1.49mmol) in tetrahydrofuran (10mL) were added tin dichloride (1414mg,7.44mmol) and concentrated hydrochloric acid (0.62 mL). The resulting mixture was stirred at room temperature for 12 hours, tetrahydrofuran was removed under reduced pressure, and the residue was diluted with dichloromethane (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was subjected to column chromatography (dichloromethane/methanol-10/1, v/v) to give the product 12a as a yellow oily liquid (347mg, yield 60%).¹HNMR(300MHz,CD₃OD):δ2.05-2.13(m,2H),2.20-2.27(m,2H),2.32-2.45(m,4H),3.94(br,2H),4.29(br,2H),4.40-4.52(m,1H),6.51(dd,1H,J＝7.2Hz,5.4Hz),6.91(dd,1H,J＝7.2Hz,1.5Hz),7.43(dd,1H,J＝5.1Hz,1.5Hz),7.47-7.49(m,3H),7.65-6.68(m,2H).

And step 3: 3- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -3-hydro-imidazo [4, 5-o ] pyridine

To compound 12a (312mg,1mmol) synthesized above was added methyl orthoformateEster (0.9mL,8mmol) and p-toluenesulfonic acid (19mg,0.1 mmol). The resulting mixture was stirred under reflux for 12 hours, and the residue was diluted with methylene chloride (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was subjected to column chromatography (dichloromethane/methanol-10/1, v/v) to give the product 13a as a yellow oily liquid (220mg, yield 70%).¹HNMR(300MHz,CD₃OD):δ1.94-2.01(m,4H),2.23-2.28(m,2H),2.39-2.47(m,2H),3.46(br,2H),3.80(s,2H),5.02-5.14(m,1H),7.27-7.38(m,4H),7.46-7.48(m,2H),8.06(dd,1H,J＝1.5Hz,7.8Hz),8.41(dd,1H,J＝1.5Hz,4.8Hz),8.50(s,1H).

And 4, step 4: 3- (8-azabicyclo [3.2.1] oct-3-yl) -3-hydro-imidazo [4, 5-o ] pyridine

To a solution of the above-synthesized compound 13a (220mg,0.7mmol) in methanol (5mL) were added 10% palladium on carbon (22mg) and ammonia formate (309mg,4.9 mmol). The resulting mixture was stirred under reflux for 12 hours, the methanol was removed under reduced pressure, and the residue was diluted with methylene chloride (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was subjected to column chromatography (dichloromethane/methanol-10/1, v/v) to give the product 14a as a yellow oily liquid (83mg, yield 49%).

And 5: n- (3- (3- (3-hydro-imidazo [4, 5-and ] pyridin-3-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 14a was used in place of compound 4 in step 5 of example 1.

Colorless gummy solid (17mg, yield 36%).¹HNMR(300MHz,CD₃OD):δ1.57-1.75(m,5H),1.96-2.02(m,2H),2.05(s,3H),2.21-2.36(m,6H),2.43(s,3H),2.74-2.90(m,4H),3.08-3.19(m,2H),3.82-3.88(m,3H),4.02(br,2H),4.41-4.47(m,1H),5.12-5.23(m,1H),7.27(dd,1H,J＝1.8Hz,8.1Hz),7.37(dd,1H,J＝4.8Hz,8.1Hz),7.46-7.52(m,2H),8.11(dd,1H,J＝1.8Hz,8.1Hz),8.42(dd,1H,J＝1.5Hz,4.8Hz),8.47(s,1H).EI-MS:m/z 562(M)⁺.

Example 12

Compound 15 b: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-methyl-3-hydro-imidazo [4, 5-o ] pyridin-3-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 3- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -2-methyl-3-hydro-imidazo [4, 5-o ] pyridine

To compound 12a (310mg,1mmol) synthesized above, acetic anhydride (1mL,10mmol) was added. The resulting mixture was stirred under reflux for 12 hours, the acetic anhydride was removed under reduced pressure, and the residue was diluted with methylene chloride (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was separated by column chromatography (petroleum ether/ethyl acetate 1/1, v/v) to give product 13b as a yellow oily liquid (230mg, yield 69%).

Step 2: 3- (8-azabicyclo [3.2.1] oct-3-yl) -2-methyl-3-hydro-imidazo [4, 5-o ] pyridine

Compound 13b was used in step 2 instead of compound 13a in step 4 of example 11.

Pale yellow oily substance (97mg, yield 76%).

And step 3: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-methyl-3-hydro-imidazo [4, 5-o ] pyridin-3-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 14b was used in place of compound 4 in step 5 of example 1 in step 3.

White solid (150mg, yield 33%).¹HNMR(300MHz,CD₃OD):δ1.56-1.75(m,4H),1.98-2.08(m,5H),2.05(s,3H),2.24-2.37(m,5H),2.43(s,3H),2.50-2.57(m,1H),2.73(s,3H),2.85-2.95(m,1H),3.14-3.23(m,2H),3.39-3.44(m,2H),3.84-3.90(m,3H),4.07(br,2H),4.40-4.45(m,1H),7.26-7.32(m,2H),7.47(d,1H,J＝7.8Hz),7.54(d,1H,J＝1.5Hz),7.95(dd,1H,J＝1.5Hz,7.8Hz),8.32(dd,1H,J＝1.5Hz,4.8Hz).

Example 13

Compound 15 c: n- (3- (3- (3-hydro- [1,2,3] triazolo [4, 5-o ] pyridin-3-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: 3- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -3-hydro- [1,2,3] triazolo [4, 5-o ] pyridine

To a solution of compound 12a (165mg,0.5mmol) synthesized above in water (1mL) was added sodium nitrite (36mg,1.1mmol), concentrated hydrochloric acid (16. mu.L) and acetic acid (0.3 mL). The resulting mixture was stirred under reflux for 12 hours, the acetic acid was removed under reduced pressure, and the residue was diluted with methylene chloride (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was separated by column chromatography (dichloromethane/methanol-10/1, v/v) to give product 13c as a yellow oily liquid (77mg, yield 48%).

Step 2: 3- (8-azabicyclo [3.2.1] oct-3-yl) -3-hydro- [1,2,3] triazolo [4, 5-o ] pyridine

Compound 13c was used in step 2 instead of compound 13a in step 4 of example 11.

Pale yellow oily substance (48mg, yield 86%).

And step 3: n- (3- (3- (3-hydro- [1,2,3] triazolo [4, 5-o ] pyridin-3-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 14c was used in place of compound 4 in step 5 of example 1 in step 3.

White solid (21mg, yield 45%).¹HNMR(300MHz,CD₃OD):δ1.59-1.75(m,4H),1.81-1.89(m,2H),2.00-2.09(m,4H),2.05(s,3H),2.17-2.21(m,2H),2.35-2.37(m,1H),2.41(s,3H),2.48-2.56(m,1H),2.61-2.70(m,2H),2.76-2.81(m,2H),2.85-2.94(m,1H),3.61(br,2H),3.79-3.89(m,3H),4.41-4.46(m,1H),5.39-5.50(m,1H),7.25(dd,1H,J＝1.8Hz,7.8Hz),7.43-7.52(m,3H),8.45(dd,1H,J＝1.5Hz,8.4Hz),8.73(dd,1H,J＝1.5Hz,4.5Hz).

Example 14

Compound 15 d: n- (3- (3- (1-hydro-benzimidazol-1-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: n1- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -1, 2-benzenediamine

To a solution of 8-benzyl-8-azabicyclo [3.2.1] oct-3-one (218mg,1mmol) in 1, 2-dichloroethane (5mL) was added o-phenylenediamine (216mg,2mmol) and sodium triacetoxyborohydride (339mg,1.6 mmol). The resulting mixture was stirred at room temperature for 12 hours, 1, 2-dichloroethane was removed under reduced pressure, and the residue was diluted with dichloromethane (10mL), washed successively with 5% sodium hydrogencarbonate solution (100mL) and saturated brine (100mL), dried over anhydrous sodium sulfate, and concentrated. The concentrate was subjected to column chromatography (petroleum ether/ethyl acetate 1/1, v/v) to give the product 12b as a yellow oily liquid (100mg, yield 33%).

Step 2: 1- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -1-hydro-benzimidazole

Compound 12b was used in step 2 instead of compound 12a in step 3 of example 11.

Pale yellow oily substance (376mg, yield 70%).

And step 3: 1- (8-azabicyclo [3.2.1] oct-3-yl) -1-hydro-benzimidazole

Compound 13d was used in step 3 instead of compound 13a in step 4 of example 11.

Pale yellow oily substance (211mg, yield 78%).¹HNMR(300MHz,CD₃OD):δ1.73-1.80(m,2H),1.90-2.04(m,4H),2.53-2.62(m,2H),3.67(br,2H),4.69-4.79(m,1H),7.24-7.33(m,2H),7.53(d,1H,J＝7.2Hz),7.66(d,1H,J＝7.2Hz),8.34(s,1H).

And 4, step 4: n- (3- (3- (1-hydro-benzimidazol-1-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 14d was used in place of compound 4 in step 5 of example 1 in step 4.

Pale yellow gum solid (25mg, 38% yield).¹HNMR(300MHz,CD₃OD):δ1.57-1.86(m,9H),2.05(s,3H),2.13-2.17(m,4H),2.39(s,3H),2.49-2.76(m,6H),2.84-2.94(m,1H),3.53-3.64(m,2H),3.81-3.89(m,3H),4.42-4.47(m,1H),7.23-7.36(m,3H),7.44-7.54(m,3H),7.71(d,1H,J＝8.1Hz),8.42(s,1H).EI-MS:m/z 561(M)⁺.

Example 15

Compound 15 e: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-methyl-1-hydro-benzimidazol-1-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 3- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -2-methyl-1-hydro-benzimidazole

Compound 12b was used in place of compound 12a in step 1 of example 12.

White solid (285mg, yield 67%).¹HNMR(300MHz,CDCl₃):δ1.78-1.85(m,2H),1.97-2.05(m,2H),2.31-2.36(m,2H),2.42-2.53(m,2H),2.64(s,3H),3.43-3.47(m,2H),3.51(s,2H),4.82-4.95(m,1H),7.16-7.22(m,2H),7.26-7.44(m,6H),7.67-7.70(m,1H).

Step 2: 1- (8-azabicyclo [3.2.1] oct-3-yl) -2-methyl-1-hydro-benzimidazole

Compound 13e was used in step 2 instead of compound 13a in step 4 of example 11.

A colorless oily liquid (67mg, yield 62%).¹HNMR(300MHz,CD₃OD):δ2.28-2.41(m,6H),2.65(s,3H),2.69-2.77(m,2H),4.22-4.25(m,2H),5.01-5.08(m,1H),7.23-7.33(m,2H),7.56-7.61(m,2H).

And step 3: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-methyl-1-hydro-benzimidazol-1-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 14e was used in place of compound 4 in step 5 of example 1 in step 3.

Pale yellow gum solid (24mg, 38% yield).¹HNMR(300MHz,CD₃OD):δ1.56-1.80(m,10H),1.93-2.01(m,3H),2.05(s,3H),2.19-2.24(m,2H),2.32-2.38(m,3H),2.41(s,3H),2.53(s,3H),2.83-2.93(m,1H),3.41-3.45(m,2H),3.81-3.88(m,3H),4.42-4.46(m,1H),4.70-4.81(m,1H),7.15-7.25(m,3H),7.42-7.46(m,3H),7.51-7.55(m,1H).¹³CNMR(CD₃OD,100MHz)δ:176.8,171.9,144.0,143.1,138.4,136.7,134.9,133.9,130.1,128.5,123.6,123.5,120.0,112.9,59.1,51.3,47.8,47.2,42.4,41.4,37.5,31.0,30.5,29.9,28.4,21.7,20.3,14.6.MS(EI):m/z 575(M)⁺.

Example 16

Compound 15 f: n- (3- (3- (1-hydro-benzo [1,2,3] triazol-1-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: 1- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) -1-hydro-benzo [1,2,3] triazole

Compound 12b was used in place of compound 12a in step 1 of example 13.

White solid (216mg, yield 62%).

Step 2: 1- (8-azabicyclo [3.2.1] oct-3-yl) -1-hydro-benzo [1,2,3] triazole

Compound 13f was used in step 2 instead of compound 13a in step 4 of example 11.

A colorless oily liquid (114mg, yield 81%).

And step 3: n- (3- (3- (1-hydro-benzo [1,2,3] triazol-1-yl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 14f was used in place of compound 4 in step 5 of example 1 in step 3.

Pale yellow gum solid (40mg, 42% yield).¹HNMR(300MHz,CD₃OD):δ1.70-1.76(m,3H),1.96-2.01(m,2H),2.06(s,3H),2.16(br,4H),2.43(s,3H),2.49-2.57(m,2H),2.76-3.02(m,8H),3.80-3.98(m,5H),4.42-4.47(m,1H),5.23-5.28(m,1H),7.25-7.29(m,1H),7.46-7.51(m,3H),7.58-7.63(m,1H),7.77(d,1H,J＝8.1Hz),8.03(d,1H,J＝8.4Hz).¹³CNMR(CD₃OD,100MHz)δ:177.7,171.9,147.7,142.3,138.7,136.9,134.5,134.0,130.1,129.5,128.5,126.6,120.8,112.4,61.4,50.3,48.6,47.2,42.3,41.3,34.5,30.4,29.8,25.6,21.7,20.3.MS(EI):m/z562(M)⁺.

Example 17

Compound 19: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (4-oxoquinazolin-3- (4-hydro) -yl-8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 2-amino-N- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) benzamides

Reacting 8-benzyl-3-exo-8-azabicyclo [3.2.1]]Oct-3-amine (436mg,2mmol) was dissolved in methylene chloride (10mL), and anthranilic acid (274mg,2mmol), EDCI (1-ethyl-3- (3-dimethylpropylamine) carbodiimide hydrochloride) (573mg,3mmol), HOBt (1-hydroxybenzotriazole) (405mg,3mmol) and triethylamine (0.56mL, 4mmol) were added in this order, followed by stirring at room temperature for 12 hours. The dichloromethane residue was removed under reduced pressure and separated by column chromatography (dichloromethane/methanol-30/1, v/v) to give the product as a white foamy solid 16(463mg, yield 69%).¹HNMR(300MHz,CD₃OD):δ2.04-2.11(m,8H),2.34-2.36(m,2H),3.30-3.34(m,1H),3.78(br,2H),4.14(s,2H),6.58-6.63(m,1H),6.72-6.75(m,1H),7.14-7.19(m,1H),7.43-7.47(m,4H),7.59-7.61(m,2H).

Step 2: 3- (8-benzyl-8-azabicyclo [3.2.1] oct-3-yl) quinazolin-4- (3-hydro) -one

Compound 16 was used in place of compound 12a in step 3 of example 11 in step 2.

Pale yellow oily substance (264mg, yield 47%).¹HNMR(300MHz,CD₃OD):δ1.75-1.82(m,2H),1.85-1.92(m,2H),2.22-2.31(m,4H),3.48(br,2H),3.74(s,2H),5.13-5.25(m,1H),7.28-7.37(m,3H),7.43-7.45(m,2H),7.49-7.55(m,1H),7.63-7.66(m,1H),7.76-7.82(m,1H),8.21(dd,1H,J＝1.2Hz,7.8Hz),8.40(s,1H).

And step 3: 3- (8-azabicyclo [3.2.1] oct-3-yl) quinazolin-4- (3-hydro) -one

Compound 17 was used in place of compound 13a in step 4 of example 11 in step 3.

A colorless oily liquid (57mg, yield 61%).

And 4, step 4: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (4-oxoquinazolin-3- (4-hydro) -yl-8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 18 was used in place of compound 4 in step 5 of example 1 in step 4.

White solid (27mg, yield 38%).¹HNMR(300MHz,CD₃OD):δ1.57-1.97(m,10H),2.05(s,3H),2.10-2.36(m,4H),2.42(s,3H),2.54-2.65(m,3H),2.87-3.07(m,3H),3.82-3.88(m,5H),4.42-4.47(m,1H),7.29(dd,1H,J＝8.1Hz,2.1Hz),7.46(d,1H,J＝8.1Hz),7.55-7.60(m,2H),7.70(d,1H,J＝8.1Hz),7.82-7.87(m,1H),8.24(d,1H,J＝7.8Hz),8.38(s,1H).EI-MS:m/z 589(M)⁺.

Example 18

Compound 21 a: 1-acetyl-N- (3- (3- (N-allyl-2- (4- (trifluoromethyl) phenyl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: 1-acetyl-N- (3- (3- (allylamine) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

To a solution of compound 6(92mg,0.2mmol) synthesized above in DMF (N, N-dimethylformamide) (1mL) were added allyl bromide (18. mu.L, 0.2mmol) and potassium carbonate (31mg,0.22 mmol). The mixture was stirred at room temperature for 3 days. The low-boiling solvent is then evaporated to dryness, diluted with diethyl ether and washed with saturated brine, and the separated organic phase is dried over sodium sulfate and concentrated under reduced pressure. The concentrate was chromatographed (petroleum ether/ethyl acetate 25/1, v/v) to give the product as a light brown oil (18.64g, 86% yield).

Step 2: 1-acetyl-N- (3- (3- (N-allyl-2- (4- (trifluoromethyl) phenyl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 20a (49mg,0.1mmol) prepared above was dissolved in dichloromethane (3mL), p-trifluoromethylphenylacetic acid (24mg,0.12mmol), EDCI (28mg,0.15mmol), HOBt (20mg,0.15mmol) and triethylamine (28uL,0.2mmol) were added in this order, and the mixture was stirred at room temperature for 12 hours. The dichloromethane residue was removed under reduced pressure and separated by column chromatography (dichloromethane/methanol-10/1, v/v) to give the product as a white foamy solid 21a (38mg, yield 57%).¹HNMR(300MHz,CD₃OD):δ1.53-1.99(m,10H),2.04(s,3H),2.10-2.20(m,3H),2.33-2.38(m,1H),2.41(s,3H),2.46-2.62(m,2H),2.82-2.90(m,2H),3.72-4.05(m,8H),4.39-4.44(m,1H),4.68-4.79(m,1H),5.05-5.16(m,1H),5.23-5.30(m,1H),5.78-6.00(m,1H),7.19-7.26(m,1H),7.39-7.50(m,4H),7.59-7.68(m,2H).

Example 19

Compound 21 b: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (N-ethyl-2- (4- (trifluoromethyl) phenyl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3-ethylamino-8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

In step 1 iodoethane was used instead of allyl bromide in step 1 of example 18.

Brown oil (66mg, 34% yield).

Step 2: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (N-ethyl-2- (4- (trifluoromethyl) phenyl) acetamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 20b was used in step 2 instead of compound 20a in step 2 of example 18.

Pale yellow oily substance (63mg, yield 67%).¹HNMR(300MHz,CD₃OD):δ1.11-1.25(m,3H),1.48-2.00(m,10H),2.04(s,3H),2.09-2.13(m,3H),2.21-2.24(m,1H),2.34-2.38(m,2H),2.41(s,3H),2.47-2.53(m,2H),2.69-2.89(m,1H),3.06-3.10(m,1H),3.43-3.50(m,1H),3.66-3.96(m,8H),4.39-4.44(m,1H),7.23-7.30(m,1H),7.42-7.47(m,3H),7.50-7.52(m,1H),7.60-7.69(m,2H).

Example 20

Compound 22 a: n- (8- (3- (1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide) propyl) -8-azabicyclo [3.2.1] oct-3-yl) -4, 6-dimethylpyrimidine-5-carboxamide

In step 1, 4, 6-dimethylpyrimidinecarboxylic acid was used in place of p-trifluoromethylphenylacetic acid in step 2 of example 18, and compound 6 was used in place of compound 20a in step 2 of example 18.

A colorless gummy solid (33mg, yield 47%).¹HNMR(300MHz,CD₃OD):δ1.65-1.79(m,4H),1.97-2.02(m,2H),2.05(s,3H),2.10-2.35(m,10H),2.42(s,3H),2.48(s,6H),2.85-2.93(m,1H),3.05-3.10(m,2H),3.77-3.81(m,2H),3.84-3.88(m,1H),4.05-4.07(m,2H),4.40-4.51(m,2H),7.29(dd,1H,J＝2.1Hz,7.8Hz),7.47(d,1H,J＝7.8Hz),7.51(d,1H,J＝2.1Hz),8.89(s,1H).MS(EI):m/z 594(M)⁺.

Example 21

Compound 22 b: 3- (N- (8- (3- (1-acetyl-N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide) propyl) -8-azabicyclo [3.2.1] oct-3-yl) -2, 4-dimethylpyridine-1-oxide

2, 4-dimethylpyridine-1-oxide-3-carboxylic acid was used in step 1 instead of p-trifluoromethylphenylacetic acid in step 2 of example 18, and compound 6 was used instead of compound 20a in step 2 of example 18.

A colorless gummy solid (28mg, 49% yield).¹HNMR(300MHz,CD₃OD):δ1.54-1.73(m,5H),1.91-2.01(m,4H),2.04(s,3H),2.15-2.29(m,7H),2.34(s,3H),2.43(s,3H),2.46(s,3H),2.85-2.94(m,1H),3.00-3.06(m,2H),3.76-4.01(m,5H),4.41-4.45(m,2H),7.24-7.27(m,1H),7.32(d,1H,J＝6.6Hz),7.45-7.49(m,2H),8.28(d,1H,J＝6.6Hz).MS(ESI):m/z 610.8(M+1)⁺.

Example 22

Compound 22 c: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2, 3-dihydroxybenzoyl-8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

2, 3-dihydroxybenzoic acid was used in step 1 instead of p-trifluoromethylphenylacetic acid in step 2 of example 18, and compound 6 was used instead of compound 20a in step 2 of example 18.

White gummy solid (25mg, yield 46%).¹HNMR(300MHz,CD₃OD):δ1.56-1.75(m,4H),1.97-2.02(m,1H),2.05(s,3H),2.17-2.36(m,10H),2.43(s,3H),2.49-2.56(m,1H),2.85-2.95(m,1H),3.11-3.19(m,2H),3.79-3.89(m,3H),4.10(br,2H),4.41-4.55(m,2H),6.72(t,1H,J＝7.8Hz),6.94(d,1H,J＝7.8Hz),7.26-7.31(m,2H),7.46-7.53(m,2H).MS(EI):m/z 596(M)⁺,598(M+2)⁺.

Example 23

Compound 22 d: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2, 3-dimethoxybenzoyl-8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

In step 1,2, 3-dimethoxybenzoic acid was used instead of p-trifluoromethylphenylacetic acid in step 2 of example 18, and compound 6 was used instead of compound 20a in step 2 of example 18.

White solid (41mg, yield 49%).¹HNMR(300MHz,CD₃OD):δ1.55-1.79(m,4H),1.94-2.01(m,2H),2.05(s,3H),2.12-2.36(m,9H),2.43(s,3H),2.49-2.57(m,1H),2.85-2.94(m,1H),3.05-3.10(m,2H),3.78-3.82(m,2H),3.86(s,3H),3.88(s,3H),3.90-3.94(m,1H),4.03(br,2H),4.41-4.47(m,2H),7.11-7.19(m,2H),7.24-7.29(m,2H),7.46-7.51(m,2H).MS(ESI):m/z 625.8(M+1)⁺.

Example 24

Compound 23: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxybenzoyl-8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

To a solution of compound 22d (442mg,0.71mmol) prepared above in DMF (10mL) was added lithium chloride (0.18mg,4.24 mmol). The mixture was stirred at 110 ℃ overnight. Cooled to room temperature and then poured into water, extracted with dichloromethane, the organic phase washed with saturated brine, the separated organic phase dried over sodium sulfate and concentrated under reduced pressure. The concentrate was chromatographed (dichloromethane/methanol-10/1, v/v) to give the product as a white foamy solid (260mg, 60% yield).¹HNMR(CD₃OD,300MHz)δ:1.51-1.80(m,4H),1.99-2.01(m,2H),2.05(s,3H),2.18-2.20(m,7H),2.31-2.36(m,2H),2.42(s,3H),2.49-2.56(m,1H),2.84-2.94(m,1H),3.12-3.16(m,2H),3.78-3.83(m,3H),3.86(s,3H),4.09(br,2H),4.41-4.53(m,2H),6.85(t,1H,J＝8.1Hz),7.10(d,1H,J＝7.8Hz),7.29(dd,1H,J＝1.8Hz,7.8Hz),7.42(d,1H,J＝8.1Hz),7.47(d,1H,J＝8.1Hz),7.52(d,1H,J＝1.8Hz).MS(ESI):m/z 611.7(M+1)⁺.

Example 25

Compound 27 a: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxy-5- (N-methylsulfonyl) benzoyl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 5- (chlorosulfonyl) -2, 3-dimethoxybenzoic acid

2, 3-Dimethoxybenzoic acid (546mg,3mmol) was slowly added chlorosulfonic acid (2mL,30mmol) under an ice bath. The mixture was slowly warmed to room temperature and stirred overnight. Carefully poured into ice water and filtered to give the product as a pink solid (458mg, 54% yield).¹HNMR(CDCl₃,300MHz)δ:4.04(s,3H),4.19(s,3H),7.68(d,1H,J＝2.4Hz),8.37(d,1H,J＝2.4Hz).

Step 2: 2, 3-dimethoxy-5- (N-methylsulfonyl) benzoic acid

To a solution of compound 24(842mg,3mmol) prepared above in DCM (10mL) was added triethylamine (0.84mL,6mmol) and methylamine alcohol solution (0.7 mL). The mixture was stirred at room temperature overnight. Water was added, extraction was carried out with dichloromethane, the organic phase was washed with saturated brine, and the separated organic phase was dried over sodium sulfate and concentrated under reduced pressure. The concentrate was separated by column chromatography (dichloromethane/methanol-10/1, v/v) to give the product as a yellow oily liquid (601mg, yield 73%).¹HNMR(CD₃OD,300MHz)δ:2.52(s,3H),3.91(s,3H),3.92(s,3H),7.43(d,1H,J＝2.1Hz),7.68(d,1H,J＝2.1Hz).

And step 3: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2, 3-dimethoxy-5- (N-methylsulfonyl) benzoyl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 25a was used in place of p-trifluoromethylphenylacetic acid in step 2 of example 18 and compound 6 was used in place of compound 20a in step 2 of example 18 in step 3.

White solid (276mg, yield 39%).¹HNMR(300MHz,CD₃OD):δ1.55-1.75(m,4H),1.94-1.99(m,2H),2.05(s,3H),2.08-2.37(m,10H),2.42(s,3H),2.53(s,3H),2.85-2.94(m,1H),3.05-3.10(m,2H),3.78-3.88(m,3H),3.94(s,3H),3.96(s,3H),4.00(br,2H),4.40-4.45(m,2H),7.27(dd,1H,J＝8.1Hz,2.4Hz),7.46(d,1H,J＝8.1Hz),7.51(d,1H,J＝2.4Hz),7.53(d,1H,J＝2.4Hz),7.68(d,1H,J＝2.4Hz).MS(ESI):m/z 719.0(M+1)⁺.

And 4, step 4: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxy-5- (N-methylsulfonyl) benzoyl) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 26a was used in place of compound 22d in step 1 of example 24 in step 4.

White solid (91mg, yieldRate 43%).¹HNMR(CD₃OD,300MHz)δ:1.55-1.75(m,5H),1.98-2.03(m,2H),2.05(s,3H),2.16-2.36(m,9H),2.43(s,3H),2.51(s,3H),2.86-2.95(m,1H),3.07-3.19(m,2H),3.79-3.89(m,3H),3.93(s,3H),4.10(br,2H),4.41-4.53(m,2H),7.26(d,1H,J＝8.1Hz),7.41-7.51(m,3H),7.97(s,3H).MS(ESI):m/z 704.9(M+1)⁺.

Example 26

Compound 27 b: 1-acetyl-N- (3- (3- (5- (N-tert-butylsulfonyl) -2-hydroxy-3-methoxybenzamide-8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: 5- (N-tert-Butylsulfonyl) -2, 3-dimethoxybenzoic acid

Tert-butylamine was used in step 1 instead of methylamine in step 2 of example 25.

Yellow oily liquid (261mg, yield 23%).¹HNMR(CD₃OD,300MHz)δ:1.19(s,9H),3.91(s,3H),3.93(s,3H),7.58(d,1H,J＝2.1Hz),7.75(d,1H,J＝2.1Hz).

Step 2: 1-acetyl-N- (3- (3- (5- (N-tert-butylsulfonyl) -2, 3-dimethoxybenzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 25b was used in place of p-trifluoromethylphenylacetic acid in step 2 of example 18 and compound 6 was used in place of compound 20a in step 2 of example 18.

White solid (382mg, yield 51%).¹HNMR(CD₃OD,300MHz)δ:1.19(s,9H),1.60-1.74(m,4H),1.93-2.01(m,3H),2.05(s,3H),2.10-2.36(m,8H),2.42(s,3H),2.50-2.56(m,1H),2.86-2.94(m,1H),3.04-3.09(m,2H),3.78-3.88(m,3H),3.94(s,3H),3.95(s,3H),3.97-4.01(m,2H),4.40-4.45(m,2H),7.26(dd,1H,J＝1.8Hz,7.8Hz),7.47(d,1H,J＝7.8Hz),7.51(d,1H,J＝1.8Hz),7.60(d,1H,J＝2.1Hz),7.74(d,1H,J＝2.1Hz).MS(ESI):m/z 760.9(M+1)⁺.

And step 3: 1-acetyl-N- (3- (3- (5- (N-tert-butylsulfonyl) -2-hydroxy-3-methoxybenzamide-8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 26b was used in place of compound 22d in step 1 of example 24 in step 3.

White solid (303mg, yield 93%).¹HNMR(CD₃OD,300MHz)δ:1.19(s,9H),1.60-1.74(m,4H),1.93-2.01(m,3H),2.05(s,3H),2.10-2.36(m,8H),2.42(s,3H),2.50-2.56(m,1H),2.86-2.94(m,1H),3.04-3.09(m,2H),3.78-3.88(m,3H),3.94(s,3H),3.95(s,3H),3.97-4.01(m,2H),4.40-4.45(m,2H),7.26(dd,1H,J＝1.8Hz,7.8Hz),7.47(d,1H,J＝7.8Hz),7.51(d,1H,J＝1.8Hz),7.60(d,1H,J＝2.1Hz),7.74(d,1H,J＝2.1Hz).MS(ESI):m/z 760.9(M+1)⁺.

Example 27

Compound 27 c: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxy-5- (piperidine-1-sulfonyl) benzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 2, 3-dimethoxy-5- (piperidine-1-sulfonyl) -benzoic acid

Piperidine was used in step 1 instead of methylamine in step 2 of example 25.

Yellow oily liquid (487mg, yield 50%).¹HNMR(CDCl₃,300MHz)δ:1.41-1.43(m,2H),1.61-1.63(m,4H),2.99-3.02(m,4H),3.94(s,3H),4.07(s,3H),7.39(s,1H),7.90(s,1H).

Step 2: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2, 3-dimethoxy-5- (piperidine-1-sulfonyl) benzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 25c was used in place of p-trifluoromethylphenylacetic acid in step 2 of example 18 and compound 6 was used in place of compound 20a in step 2 of example 18.

White solid (479mg, yield 62%).¹HNMR(CD₃OD,300MHz)δ:1.43-1.74(m,12H),1.94-1.98(m,2H),2.05(s,3H),2.11-2.31(m,8H),2.42(s,3H),2.49-2.56(m,1H),2.86-3.07(m,8H),3.78-3.82(m,2H),3.88-3.91(m,1H),3.96(s,6H),4.40-4.45(m,2H),7.27(dd,1H,J＝8.1Hz,2.1Hz),7.41(d,1H,J＝2.1Hz),7.46(d,1H,J＝8.1Hz),7.50(d,1H,J＝1.8Hz),7.57(d,1H,J＝1.8Hz).MS(ESI):m/z 772.9(M+1)⁺.

And step 3: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxy-5- (piperidine-1-sulfonyl) benzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 26c was used in place of compound 22d in step 1 of example 24 in step 3.

White solid (315mg, yield 76%).¹HNMR(CD₃OD,300MHz)δ:1.41-1.46(m,2H),1.60-1.74(m,9H),1.94-2.02(m,2H),2.05(s,3H),2.13-2.35(m,9H),2.42(s,3H),2.89-2.99(m,6H),3.07-3.14(m,2H),3.76-3.81(m,2H),3.89(s,3H),4.08(br,2H),4.40-4.46(m,2H),7.19-7.23(m,2H),7.43-7.48(m,2H),7.90(s,1H).MS(ESI):m/z 758.9(M+1)⁺.

Example 28

Compound 27 d: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxy-5- (morpholinosulfonyl) benzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Step 1: 2, 3-dimethoxy-5- (morpholinosulfonyl) -benzoic acid

In step 1, morpholine was used instead of methylamine in step 2 of example 25.

Yellow oily liquid (1043mg, yield 100%).¹HNMR(CD₃OD,300MHz)δ:2.90(t,4H,J＝4.8Hz),3.70(t,4H,J＝4.8Hz),3.94(s,3H),3.95(s,3H),7.40(d,1H,J＝1.8Hz),7.61(d,1H,J＝1.8Hz).

Step 2: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2, 3-dimethoxy-5- (morpholinosulfonyl) benzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 25d was used in step 2 instead of p-trifluoromethylphenylacetic acid in step 2 of example 18 and compound 6 was used in place of compound 20a in step 2 of example 18.

White solid (249mg, yield 33%).¹HNMR(CD₃OD,300MHz)δ:1.55-1.80(m,4H),1.95-2.00(m,2H),2.05(s,3H),2.10-2.37(m,9H),2.42(s,3H),2.49-2.56(m,1H),2.86-2.95(m,1H),2.99(t,4H,J＝4.5Hz),3.10(br,2H),3.71(t,4H,J＝4.5Hz),3.78-3.89(m,3H),3.96(s,3H),3.97(s,3H),4.04(br,2H),4.40-4.46(m,2H),7.27(dd,1H,J＝1.8Hz,8.1Hz),7.42(d,1H,J＝2.1Hz),7.47(d,1H,J＝8.1Hz),7.51(d,1H,J＝1.8Hz),7.58(d,1H,J＝2.1Hz).MS(ESI):m/z774.9(M+1)⁺.

And step 3: 1-acetyl-N- (3-chloro-4-methylphenyl) -N- (3- (3- (2-hydroxy-3-methoxy-5- (morpholinosulfonyl) benzamide) -8-azabicyclo [3.2.1] oct-8-yl) propyl) -4-piperidinecarboxamide

Compound 26d was used in place of compound 22d in step 1 of example 24 in step 3.

White solid (222mg, yield 100%).¹HNMR(CD₃OD,300MHz)δ:1.33-1.74(m,4H),1.98-2.02(m,2H),2.05(s,3H),2.17-2.36(m,9H),2.42(s,3H),2.48-2.53(m,1H),2.84-2.89(m,1H),2.96(br,4H),3.07-3.16(m,2H),3.70(br,4H),3.77-3.88(m,3H),3.92(s,3H),4.10(br,2H),4.40-4.53(m,2H),7.25-7.27(m,2H),7.45(d,1H,J＝6.9Hz),7.51(s,1H),7.92(s,1H).MS(ESI):m/z 760.9(M+1)⁺.

Example 29

Compound 26 e: 1-acetyl-N- (3- (3- (5- (N-N-butylsulfonyl) -2, 3-methoxybenzamide-8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Step 1: 5- (N-N-butylsulfonyl) -2, 3-dimethoxybenzoic acid

N-butylamine was used in place of methylamine in step 2 of example 25 in step 1.

Yellow oily liquid (982mg, yield 100%).¹HNMR(CD₃OD,300MHz)δ:0.87(t,3H,J＝7.2Hz),1.28-1.42(m,4H),2.84(t,2H,J＝6.9Hz),3.91(s,3H),3.93(s,3H),7.48(d,1H,J＝1.8Hz),7.64(d,1H,J＝1.8Hz).

Step 2: 1-acetyl-N- (3- (3- (5- (N-N-butylsulfonyl) -2, 3-methoxybenzamide-8-azabicyclo [3.2.1] oct-8-yl) propyl) -N- (3-chloro-4-methylphenyl) -4-piperidinecarboxamide

Compound 25e was used in place of p-trifluoromethylphenylacetic acid in step 2 of example 18 and compound 6 was used in place of compound 20a in step 2 of example 18.

White solid (28mg, yield 13%).¹HNMR(CD₃OD,300MHz)δ:0.87(t,3H,J＝7.2Hz),1.28-1.35(m,4H),1.41-1.45(m,3H),1.66-1.80(m,3H),1.92-2.00(m,2H),2.05(s,3H),2.16-2.18(m,4H),2.30-2.36(m,2H),2.42(s,3H),2.48-2.56(m,1H),2.81-2.86(m,2H),2.89-2.93(m,1H),3.07-3.12(m,2H),3.17-3.24(m,1H),3.78-3.88(m,3H),3.94(s,3H),3.95(s,3H),4.04(br,2H),4.41-4.44(m,2H),7.30(dd,1H,J＝1.5Hz,7.8Hz),7.46(d,1H,J＝7.8Hz),7.53(d,1H,J＝1.5Hz),7.55(d,1H,J＝2.1Hz),7.70(d,1H,J＝2.1Hz).MS(ESI):m/z 760.2(M+1)⁺.

Test examples of biological Activity

CCR5 belongs to the G-protein coupled receptor (GPCR) family. The development of drug development technology aiming at GPCR is more perfect, wherein, the receptor ligand binding method, GTP Gamma S binding method and Ca are adopted²⁺Flow assay and other experimental techniques are widely used for screening chemokine receptor-related drugs. The compound of the present invention is a suction filtration type [ alpha ], [ alpha³⁵S]GTP γ S binding assay, SPA-WGA method³⁵S]The CCR5 inhibition activity of the compound is tested by three methods, namely a GTP gamma S binding experiment and a calcium influx detection experiment.

A.[³⁵S]GTP γ S binding experiments

The ability of the α subunit to bind GTP is dependent on the action of CCR5 on agonists, and the determination of the amount of GTP bound to the α subunit reflects the ability of the agonist to activate CCR 5. in GTP γ S binding experiments, to exclude the amount of GTP bound to G protein due to GTPase hydrolysis from accurately reflecting the activation of CCR5, and also for ease of detection, the use of conformational changes that allow CCR5 to interact with G proteins and activate G proteins³⁵The structural analog of S-labeled GTP, GTP γ S, replaces GTP, which binds to the activated α subunit but is not hydrolyzed, so that the α subunit binds GDP when CCR5 is not activated, and after CCR5 activation, the α subunit binds GTP γ S, which binds irreversibly to the α subunit³⁵S]The amount of GTP γ S reflects activation of CCR5 by agonistsDegree of the disease. When added, the antagonist will result in a decrease in the ability of the agonist to activate CCR 5.

In such an experiment, free G protein is bound³⁵S]The GTP Gamma S can be separated by using a membrane suction filtration method, which is called a suction filtration type GTP Gamma S experiment.

Or using SPA (science promotion assay) technology to detect binding to G protein³⁵S]-GTP γ S, which is referred to as SPA-WGA method³⁵S]SPA technology is based on the principle that subatomic particles released by the decay of radioactive atoms, such as β radiation (electrons), in sufficiently close proximity to excite microspheres to luminesce and are detected by a photometric device³⁵S]GTP γ S has a sufficiently short distance to excite the microspheres to emit light, reflecting the activation of the receptor.

Activation of G protein by CCR5 was determined by the following experiment.

A CHO (Chinese hamster ovary) permanent cell line expressing CCR5 (CHO-CCR5) was lysed with lysis buffer (5mM Tris-HCl, pH 7.5,5mM EDTA and 5mM EGTA) and centrifuged at 15,000 Xg for 10 min. Cell membrane reaction buffer (5mM Tris-HCl, pH 7.5,5mM MgCl)₂1mM EGTA,100mM NaCl) and resuspended in Bioford quorum protein from Bio-Rad. Then, a GTP γ S binding experiment was performed in a reaction buffer solution in which the reaction system was 100. mu.L containing 10. mu.g of membrane protein, 40. mu.M GDP, 0.5nM³⁵S]GTP γ S (1200Ci/mmol), the test compound is added, the mixture is shaken and mixed, and the reacted tubes are incubated at 30 ℃ for 1 hour. After the reaction was complete, the tube was placed on ice, diluted with PBS to stop the reaction, and immediately vacuum filtered through a GF/C filter. The bound radioactivity is measured by liquid scintillation counting after addition to scintillation fluid, which is the filtered GTP γ S assay. The previous steps of the SPA-WGA determination method are the same as the GTP gamma S experimental method, but the PBS is added to stop the reaction after the reaction is finished, and the reaction system is filled with the PBSAdding SPA-WGA microspheres, adding a compound to be detected, uniformly mixing the system, incubating at 30 ℃ for 1 hour, and then putting on ice to terminate the reaction. Centrifuge at room temperature, 1000rpm, 15 min. And then measured using a liquid scintillation counter.

Bound radioactivity was determined using a liquid scintillation counter. Basal binding (basal) was determined in the absence of agonist, and non-specific binding (non-specific) was determined in the presence of 10. mu.M non-isotopic GTP γ S. [³⁵S]-percentage of GTP γ S binding 100 × [ c.pm._{Sample (I)}-c.p.m._{Non-specific binding}]/[c.p.m._{Foundation bonding}-c.p.m._{Non-specific binding}]To calculate. IC (integrated circuit)₅₀Is caused by inhibiting RANTES (a cytokine with strong chemotactic effect on monocyte-macrophage) of 10nM³⁵S]The concentration of the compound at which GTP γ S binds 50% is obtained from the concentration curve of the compound.

When the concentration-inhibition curve of the compound is researched, the highest CPM value or RFU value under the action of the agonist RANTES is 100%, the background CPM value or RFU value is 0%, then statistical software Sigmaplot is used for fitting, and the IC of the antagonist is obtained₅₀The value is obtained. At compound concentrations of 1 μ M, where the ability to antagonize CCR5 was not in excess of 90%, a virtual concentration was required for mapping convenience, the virtual points in this study were: when the compound is 1mM, the capacity of antagonizing CCR5 is 100%.

B. Calcium influx assay

Activation of G-protein can regulate intracytoplasmic experiment Ca by several different mechanisms²⁺The change in concentration, thereby reflecting the level at which the GPCR is activated. Fluo-4calcium dye (fluorescent-4 calcium dye) from Invitrogen is a commonly used type of Ca²⁺Fluorescent dyes for detection, whereas the detection of signals can be usually done using the FlexStation or FLIPR of molecular devices. The present invention is based on the overexpression of G in a CHO-CCR5 stable cell line_qThe family protein-G16, realizing G_i/oProtein-coupled CCR5 receptor pair G_qAnd (4) activating a signal path.

Cells were cultured in serum-free medium 4 hours before the start of the experiment, digested with 0.04% EDTA-PBS, and washed once with HBSS (Hank's Balanced salt solution) buffer. The cells were resuspended in HBSS containing 2.5mM Probenecid (methamphetamine), the prepared mixture of Fluo-4AM (a fluorescent dye) and Cremophor EL (polyoxyethylated castor oil) was added to the cell suspension, after mixing well, reacted in an incubator at 37 ℃ for 40min, then centrifuged at 800rpm for 3min, the supernatant was discarded, and 5mL of HBSS was washed 2 times. A96-well plate (100 mu L/well) is paved with 11mL of HBSS suspension cells, the 96-well plate is centrifuged at 1000rpm for 3min, incubated for 10min in the dark at room temperature, 50 mu L of drug solution is added, an instrument is set up, FlexStation is carried out, agonist solution (25 mu L/well) is added, and data are measured.

C. Results of molecular level Activity test

[³⁵S]GTP gamma S binding experiments and calcium influx assay experiments show that a series of compounds of the invention are antagonists of CCR5, inhibit GTP gamma S binding caused by activation of CCR5 by 10nM RANTES, and the inhibition and IC50 are shown in Table 1 below.

D. Results of cell level Activity assay

PBMC system virus replication model: (operating under laboratory conditions P3)

Isolating PBMC cells from blood from two persons;

stimulation of PBMC cells with PHA for 3 days;

resuspending the stimulated PBMC in a culture medium containing the test compound and HIV-1Ba-L virus;

incubation and culture for 6 days;

viral replication was detected by measuring the amount of p24 antigen in the culture using a commercial assay kit

PBMC system virus replication model experiments showed that the compounds of the invention are antagonists of CCR5, which inhibit viral replication in cell models, as well as EC50, as listed in table 1 below.

TABLE 1

The activity data set forth in Table 1 fully show that the compounds of the invention are antagonists of the chemokine receptor CCR5, with 10 of the compounds (specifically: 7a, 7b, 7c, 7d, 8b, 15a, 15e, 21a, 21b, and 26c) having inhibitory activity against the CCR5 receptor, IC₅₀IC of 7 compounds (specifically: 8a, 10c, 15b, 15d, 15f, 26b and 26e) to nM₅₀The inhibitory activity IC of 7 compounds (specifically: 10b, 15c, 19, 22c, 22d, 26a and 26d) on CCR5 receptor reaches the 10nM level₅₀Up to the 100nM level. We selected 6 compounds of representative structure to perform a cell level test for inhibiting HIV-1 virus replication, and the results showed that these compounds are both effective in inhibiting HIV-1 virus replication, and that two of them (specifically 21a, 21b) have antiviral activity EC₅₀Less than 1nM, an antiviral activity EC of 4 compounds (specifically 7c, 8a, 8b and 26e)₅₀Between 200 and 600 nM.

Therefore, the compound is an effective CCR5 antagonist, and can be used as a therapeutic drug for CCR5 mediated diseases, such as drugs for treating HIV-1 virus invasion, autoimmune diseases, asthma, rheumatoid arthritis, chronic obstructive pulmonary disease and the like.

Claims

1. An 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compound or a pharmaceutically acceptable salt thereof, wherein the compound is characterized by comprising the following compounds:

2. the compound according to claim 1 or a pharmaceutically acceptable salt thereof, wherein the pharmaceutically acceptable salt is a salt of the 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-amino amide compound with hydrochloric acid, tartaric acid, citric acid, hydrobromic acid, hydroiodic acid, nitric acid, phosphoric acid, sulfuric acid or methanesulfonic acid.

3. A pharmaceutical composition for treating CCR5 mediated diseases comprising a therapeutically effective amount of the 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-ylamide compound of claim 1 or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier.

4. The pharmaceutical composition of claim 3, wherein the composition further comprises a protease inhibitor and/or a reverse transcriptase inhibitor.

5. Use of the 8- (3-aminopropyl) -3-exo-8-azabicyclo [3.2.1] octane-3-ylamide compound of claim 1, or a pharmaceutically acceptable salt thereof, as a CCR5 antagonist in the manufacture of a medicament for the treatment of a CCR5 mediated disease.

6. Use according to claim 5, wherein the disease is HIV infection, asthma, rheumatoid arthritis, autoimmune diseases or chronic obstructive pulmonary disease.