WO2022220613A1 - 스핑고신-1-인산 수용체 효능제의 신규한 제조방법 - Google Patents
스핑고신-1-인산 수용체 효능제의 신규한 제조방법 Download PDFInfo
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- WO2022220613A1 WO2022220613A1 PCT/KR2022/005405 KR2022005405W WO2022220613A1 WO 2022220613 A1 WO2022220613 A1 WO 2022220613A1 KR 2022005405 W KR2022005405 W KR 2022005405W WO 2022220613 A1 WO2022220613 A1 WO 2022220613A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/445—Non condensed piperidines, e.g. piperocaine
- A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
- A61K31/454—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. pimozide, domperidone
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/54—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings condensed with carbocyclic rings or ring systems
- C07D231/56—Benzopyrazoles; Hydrogenated benzopyrazoles
Definitions
- the present invention relates to a novel preparation method for the synthesis of sphingosine-1-phosphate receptor agonists.
- Sphingosine-1-phosphate is produced through the intracellular ceramide pathway, and ceramide, the starting material of this synthetic pathway, has two production pathways, namely, the de novo biosynthetic pathway and It is produced in cells through the degradation of sphingomyelin, a component of the cell membrane.
- S1P levels in each tissue are regulated by two biosynthetic sphingosine kinases (SphKs) and two biodegradable S1P phosphatases (S1P lyase and lysophospholipid phosphatases).
- S1P lyase and lysophospholipid phosphatases The produced substance S1P mediates various cellular responses such as cell proliferation, cytoskeletal organization and migration, adhesion- and tight junction assembly, and morphogenesis. it is known They are present in high concentrations (100-1000 nM) in plasma bound to albumin and other plasma proteins, whereas in tissues, they are present in low concentrations.
- S1P binds to the S1P receptor, a G-protein coupled receptor, and exhibits various biological functions.
- the sub-types of S1P receptors known to date are S1P1 to S1P5. ) receptor) 1, 5, 3, 6 and 8. These S1P receptors are responsible for leukocyte recirculation, neural cell proliferation, morphological changes, migration, endothelial function, vasoregulation and cardiovascular development ( It is known to be involved in various biological functions such as cardiovascular development.
- S1P signaling through these receptors plays an important role in a series of responses related to multiple sclerosis, including inflammatory responses and repair processes.
- nonselective S1P1 agonists have recently It is approved for the treatment of multiple sclerosis.
- S1P receptors are equally widely expressed in many cells involved in the induction of multiple sclerosis.
- S1P1 receptors play a very important role in the immune system.
- the S1P1 receptor is mainly expressed on the surface of lymphocytes such as T cells and B cells, and reacts with S1P to participate in lymphocyte recycling.
- the S1P concentration is higher in body fluid than in lymphoid tissue, so that lymphocytes leave the lymphoid tissue according to the difference in S1P concentration and circulate along the efferent lymph.
- the S1P1 receptor of lymphocytes is down-regulated by the S1P1 agonist, the egress of lymphocytes from the lymphoid tissue does not occur, and eventually autoaggressive causing inflammation and tissue damage to the CNS. The infiltration of lymphocytes is reduced, and the therapeutic effect appears in multiple sclerosis.
- fingolimod a nonselective S1P1 agonist approved as an oral multiple sclerosis treatment, when it is activated by binding to the S1P1 receptor, paradoxically, the receptor is internalized or degraded from the lymphocyte surface, resulting in functional S1P1 It acts as an antagonist.
- Korean Patent Application Laid-Open No. 10-2014-0104376 discloses a novel compound of Formula 1 effective as an S1P receptor agonist.
- X is C or N
- R1 is H or optionally substituted alkyl
- R2 is H, optionally substituted alkyl, halogen, CN, CF 3 or COCF 3 ,
- W is C, N, C-alkoxy, C-halogen or C-CN
- n 0, 1, 2 or 3
- R3 to R10 are each H, alkyl, halogen, halogenoalkyl or alkoxyalkyl,
- R11 is H
- R12 is OH, NH 2 , or to be.
- reaction may have the following problems in producing a clinical API.
- the intermediate product 1-[1-chloro-6-(3-chloro-1-isopropyl-1H-indazol-5-ylmethoxy)-3 Purification of ,4-dihydro-naphthalen-2-ylmethyl]-piperidine-4-carboxylic acid ethyl ester was required.
- purification of the intermediate product is absolutely necessary.
- an object of the present invention is to provide a suitable method for producing a compound of Formula 7 or a salt thereof in high yield and high purity, which can be used as an excellent sphingosine-1-phosphate receptor agonist.
- R1 is hydrogen or substituted or unsubstituted alkyl
- R2 is hydrogen, substituted or unsubstituted alkyl, halogen, CN, CF 3 or COCF 3 ;
- R3 and R4 are each hydrogen, substituted or unsubstituted alkyl, or halogen
- R5 is hydrogen, substituted or unsubstituted alkyl or halogen
- X is C or N
- Y is N, O or S
- n and n are 0, 1, 2 or 3, respectively, and m+n>0.
- One aspect according to the present invention provides a method for preparing a compound of Formula 7 or a salt thereof, comprising the following steps:
- R1 is hydrogen or substituted or unsubstituted alkyl
- R2 is hydrogen, substituted or unsubstituted alkyl, halogen, CN, CF 3 or COCF 3 ;
- R3 and R4 are each hydrogen, substituted or unsubstituted alkyl, or halogen
- R5 is hydrogen, substituted or unsubstituted alkyl or halogen
- R6 is substituted or unsubstituted alkyl
- X is C or N
- Y is N, O or S
- L is a leaving group
- n and n are 0, 1, 2 or 3, respectively, and m+n>0.
- the 'alkyl' is a substituted alkyl
- substituents there may be one or more substituents, and the substituents are each independently a group consisting of halogen, cyano, hydroxy, alkyloxy, oxo, unsubstituted sulfonyl and sulfonyl substituted with alkyl. It may be selected from
- R1 of the above formula is hydrogen or C 1 -C 6 substituted or unsubstituted alkyl
- R2 is hydrogen, C 1 -C 6 substituted or unsubstituted alkyl, halogen, CN, It may be CF 3 or COCF 3
- Each of R3 and R4 may be hydrogen or C 1 -C 6 substituted or unsubstituted alkyl.
- R5 may be F, Cl, Br or I.
- R6 may be a C 1 -C 4 substituted or unsubstituted alkyl.
- R1 may be C 1 -C 4 substituted or unsubstituted alkyl, and R2 may be halogen (F, Cl, Br or I).
- R3 and R4 may be hydrogen.
- R5 may be Cl.
- R6 may be an ethyl group.
- the leaving group (L) is a reactive group that provides a substitution position to the compound of Formula 2 when the compound of Formula 2 is subjected to a substitution reaction with an alcohol-based compound such as Formula 3, but is not limited thereto.
- it may be selected from chlorine (Cl), bromine (Br), iodine (I), methanesulfonate (Oms), p-toluenesulfonate (OTs) and trifluoromethanesulfonate (OTf). have.
- L may be Br.
- Y may be N, and m and n may each be 2.
- the term 'salt thereof' refers to a pharmaceutically acceptable salt of the compound.
- Such pharmaceutically acceptable salts include acids that form non-toxic acid addition salts containing pharmaceutically acceptable anions, for example, inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, hydrobromic acid, hydroiodic acid, tartaric acid, formic acid, Organic carbon acids such as citric acid, acetic acid, trichloroacetic acid, trifluoroacetic acid, gluconic acid, benzoic acid, lactic acid, fumaric acid, maleic acid, etc., sulfonic acid such as methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid or naphthalenesulfonic acid acid addition salts formed by, etc., particularly preferably acid addition salts formed by sulfuric acid, methanesulfonic acid or hydrohalic acid or the like.
- inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid,
- the salt of the compound of Formula 6 and the salt of the compound of Formula 7 may be the hydrochloride salt of the compound of Formula 6 and the hydrochloride salt of the compound of Formula 7, respectively.
- step 1) the compound of Formula 4 is prepared by a coupling reaction between the compound of Formula 2 and the compound of Formula 3 in the presence of a dimethylacetamide (DMA) solvent.
- DMA dimethylacetamide
- the coupling reaction of the compound of Formula 2 and the compound of Formula 3 can be easily performed using K 2 CO 3 in a DMA solvent.
- the decomposition product reacts with the reactant of the synthesis reaction to generate impurities, thereby reducing the purity of the reaction product may occur.
- the maximum synthesis reaction temperature and the adiabatic temperature increase are higher than the maximum synthesis reaction temperature and the adiabatic temperature increase compared to the synthesis reaction using dimethylacetamide as the reaction solvent. It may be preferable to use dimethylacetamide as the reaction solvent of the synthesis reaction.
- the solvent for crystallization of the compound of Formula 4 includes an alcohol-based solvent. It may be preferable to use For example, when water or methyl tertiary butyl ether (MTBE) is used alone during crystallization of the compound of Formula 4, crystallization may not proceed.
- MTBE methyl tertiary butyl ether
- the solvent for the crystallization may be a mixed solvent of an alcohol-based solvent, an ester-based solvent, a non-polar solvent, and water.
- an alcohol-based solvent, an ester-based solvent, or a mixed solvent of a non-polar solvent and water may be used to crystallize the compound of Formula 4, thereby obtaining the compound of Formula 4 in high yield.
- the 'alcohol solvent' for crystallization of the compound of Formula 4 is not limited thereto, but may be, for example, at least one solvent selected from methanol, ethanol, isopropyl alcohol, and butanol.
- the 'ester solvent' for crystallization of the compound of Formula 4 is not limited thereto, but may be, for example, one or more solvents selected from methyl acetate, ethyl acetate, and isopropyl acetate.
- the 'non-polar solvent' for the crystallization of the compound of Formula 4 is not limited thereto, but may be, for example, one or more solvents selected from pentane, hexane, and heptane.
- the solvent for the crystallization may be a mixed solvent of ethanol, isopropyl acetate, heptane and water.
- step 2) a compound of Formula 6 or a salt thereof is prepared by reacting a compound of Formula 4 and a compound of Formula 5 under reducing conditions.
- a compound of Formula 6 is prepared by reacting a compound of Formula 4 and a compound of Formula 5 in the presence of a reducing agent.
- the reducing agent is, for example, at least one selected from sodium triacetoxyborohydroide (NaBH(OAc) 3 ), sodium borohydride (NaBH 4 ) and sodium cyanoborohydride (NaBH 3 CN). may be used, but is not limited thereto.
- the compound of Formula 4 and the reducing agent may be used in an equivalent ratio of 1:5 to 5:1 in terms of reaction efficiency.
- it may be used in an equivalent ratio of 1:4 to 4:1, 1:3 to 3:1, and 1:2 to 2:1.
- a pharmaceutically acceptable salt of the compound of Formula 6 may be obtained according to the conditions for obtaining the compound of Formula 6 in step 2).
- the hydrochloride salt of the compound of Formula 6 may be prepared through crystallization.
- the crude compound of Formula 6 prepared by the reaction of the compound of Formula 4 and the compound of Formula 5 in step 2) may exhibit the properties of a sticky oil, so that After completion of the reaction, the step of crystallizing may be further included to obtain the compound of Formula 6 or a salt thereof.
- the crude compound of Formula 6 may be crystallized under acidic conditions.
- the acidic condition may be, for example, a condition of pH 3.0 or less, specifically, crystallization by adding an acid compound so that the pH of the solution containing the compound of Formula 3 is 1.0 to 3.0.
- the acid compound used to form the acidic condition may be a known acid compound within a range that does not impair the structure and physical properties of the compound of Formula 6, and the type of the acid compound is not limited.
- hydrochloric acid may be added to the crude reaction product containing the compound of Formula 6 to perform crystallization.
- the hydrochloric acid may be used in a concentration of 1N to 8N.
- the hydrochloric acid may be used in a concentration of 3N to 6N. If the concentration of the hydrochloric acid is too high, the amount of water used during crystallization is insufficient, and thus the removal rate of the B complex is poor, which may cause a problem in that the filtration does not proceed.
- the crystallization is not limited thereto, but may be performed at a temperature of 25°C or less, for example, 0°C or more and 25°C or less.
- the crystallization may be performed at a temperature of 0°C to 20°C, for example, a temperature of 10°C.
- the crystallization may be performed according to an anti-solvent method.
- the solvent for crystallization according to the semi-solvent method is water; polar organic solvents such as methyl tertiary butyl ether (MTBE), ethyl acetate (EA), dichloromethane (DCM), and the like; And it may be carried out by adding one or more solvents selected from non-polar organic solvents such as n-hexane.
- polar organic solvents such as methyl tertiary butyl ether (MTBE), ethyl acetate (EA), dichloromethane (DCM), and the like.
- the solvent for the crystallization may be performed by adding an ether-based single solvent.
- the 'single solvent' refers to the addition of only one solvent for crystallization of the compound of formula (6). At this time, the case where one solvent is added for crystallization while the reaction solvent remains in the reactor by performing crystallization without distilling the reaction solvent after the reaction for preparing the compound of Formula 6 is not excluded from the 'single solvent' is obvious to those skilled in the art.
- a trace amount of a heterogeneous solvent at a level that does not substantially affect the crystallization yield when the one solvent is added is also not excluded from the single solvent. For example, 5% by volume or less, 4% by volume or less, 3% by volume or less, 2% by volume or less, 1% by volume or less, 0.5% by volume or less, or 0% by volume based on the total volume of solvent added for crystallization (i.e. .
- the ether-based solvent is not limited thereto, but for example, dialkyl such as diethyl ether, dipropyl ether, dibutyl ether, diisoamyl ether, ethyl methyl ether, methyl propyl ether, methyl butyl ether, ethyl propyl ether, etc. etheric solvents; arylallyl ether solvents such as diphenyl ether and anisole; or cyclic ether solvents such as tetrahydrofuran and tetrahydropyran.
- dialkyl such as diethyl ether, dipropyl ether, dibutyl ether, diisoamyl ether, ethyl methyl ether, methyl propyl ether, methyl butyl ether, ethyl propyl ether, etc.
- etheric solvents arylallyl ether solvents such as diphenyl ether and anisole
- the ether-based single solvent may be methyl tert-butyl ether (MTBE).
- MTBE methyl tert-butyl ether
- the solvent for crystallization may be added in an amount required for crystallization to perform crystallization, and the amount of solvent used is not particularly limited.
- the solvent for the crystallization may be used in an amount of 4 to 10 times the amount of the solution to be crystallized.
- crystallization may be performed by adding 4 to 8 times, specifically 6 times, MTBE to the crude reaction product containing the compound of Chemical Formula 6.
- step 3 the ester group of the compound of Formula 6 or a salt thereof obtained above is converted to a carboxylic acid group to prepare a compound of Formula 7 or a salt thereof.
- step 3 the compound of Formula 6 may be used as it is, or purified and/or crystallized as it is without purification and crystallization after the reaction in step 2), but is not limited thereto.
- a pharmaceutically acceptable salt of the compound of Formula 6 obtained through crystallization in step 2) such as a hydrochloride salt of the compound of Formula 6, may be used as the reactant in step 2).
- the ester group may be converted into a carboxylic acid group by reacting the compound of Formula 6 or a salt thereof with water, a polar solvent, or a mixed solvent thereof in the presence of a base.
- the polar solvent that can be used for the conversion reaction to the carboxylic acid group is an alcohol-based solvent such as methanol, ethanol, n-propanol, iso-propanol, n-butanol, iso-butanol, sec-butanol, and tert-butanol; Polar non-alcoholic solvents such as chloromethane and dichloromethane may be exemplified, but are not limited thereto.
- a methyl ester type impurity when methanol is used for the conversion reaction to the carboxyl group, a methyl ester type impurity may be generated by methanol remaining in the subsequent API process. It may be to prepare a compound or a salt thereof.
- ethanol, water, dichloromethane or a mixed solvent thereof may be used as the reaction solvent for conversion to the carboxyl group.
- the base that can be used for the conversion reaction to the carboxyl group may be selected from sodium hydroxide, potassium hydroxide, lithium hydroxide and barium hydroxide.
- the base may be used in an aqueous solution state or used in a solid state.
- the base in the solid state there may be an excellent effect in terms of the ease of storage and use of raw materials.
- the compound of Formula 6 or a salt thereof and ethanol are mixed in the presence of NaOH, and the compound of Formula 7 or a salt thereof is prepared at a temperature of 40 to 60°C.
- the reaction in terms of purity of the product, may be carried out using 3 to 5 equivalents of a base and 5 to 7 equivalents of a solvent.
- the method may further include 4) recrystallizing the compound of Formula 7 or a salt thereof obtained in step 3) under acidic conditions.
- the content of the dichloromethane (DCM) solvent in the fraction containing the obtained compound of formula 7 or a salt thereof, such as the recrystallized compound of formula 7 or a salt thereof, is 600 ppm or less.
- the purpose of the present invention is not limited thereto.
- the content of the DCM solvent in the fraction obtained after the recrystallization can be measured, for example, through HPLC.
- the crystallization of the compound of Formula 7 or a salt thereof is performed under acidic conditions.
- the acidic condition may be, for example, a condition of pH 3 or less, specifically, crystallization by adding an acid compound so that the pH of the solution containing the compound of Formula 3 is 1 to 3.
- the acid compound used to form the acidic condition may be a known acid compound within a range that does not impair the structure and physical properties of the compound of Formula 7 or a salt thereof, and the type of the acid compound is not limited.
- hydrochloric acid may be added to the reaction product containing the compound of Formula 7 or a salt thereof to perform crystallization.
- the solvent for the recrystallization is, for example, water; Ester solvents such as methyl acetate (MeOAc), ethyl acetate (EtOAc), isopropyl acetate (IPOAc), alcohol solvents such as methanol (MeOH), ethanol (EtOH), isopropyl alcohol (IPA), methyl tert-butyl ether ( polar organic solvents such as MTBE), dichloromethane (DCM), tetrahydrofuran (THF), and the like; And it may be carried out by adding one or more solvents selected from non-polar organic solvents such as n-hexane and xylene, but is not limited thereto.
- solvents such as methyl acetate (MeOAc), ethyl acetate (EtOAc), isopropyl acetate (IPOAc)
- alcohol solvents such as methanol (MeOH), ethanol (EtOH), isopropyl alcohol (IPA),
- the recrystallization may be performed using a mixed solvent of water, ethyl acetate and ethanol.
- the recrystallization may be performed using a mixed solvent of water, isopropyl acetate and ethanol.
- the recrystallization step is performed using a mixed solvent of 4 to 6 times (fold) water, 1 to 3 times isopropyl acetate, and 1 to 3 times ethanol compared to the compound of the recrystallization target.
- the recrystallization may be performed using a mixed solvent of 5 times water, 2 times isopropyl acetate, and 2 times ethanol compared to the compound to be recrystallized.
- the recrystallization may be performed by including the same kind of solvent as the solvent remaining in step 3).
- the recrystallization step may include adding an acid compound at a temperature of 0 ⁇ 25 °C.
- the recrystallization step may include adding an acid compound at a temperature of 20 ⁇ 2 °C.
- the recrystallization step may be performed without stirring or while stirring.
- the recrystallization step may be performed while stirring at a speed of 100 to 500 rpm after, for example, an acid compound is added.
- the recrystallization step may be performed while stirring at a speed of 400 to 500 rpm after the acid compound is added.
- the recrystallization step may be performed while adding the acid compound dropwise for, for example, 100 minutes.
- the recrystallization step may be performed while adding the acid compound dropwise for 10 to 60 minutes.
- the recrystallization step may be performed one or more times to excellently improve the yield and purity of the product.
- the compound of Formula 3 may be prepared from the compound of Formula 8.
- the compound of Formula 3 may be obtained by introducing an aldehyde into the compound of Formula 8.
- the reaction of introducing an aldehyde into the compound of Formula 8 may be performed using a reagent of the Vilsmeier-Haack reaction.
- reaction of introducing an aldehyde into the compound of Formula 8 is reacting the compound of Formula 8 with phosphoryl chloride (POCl 3 ) and dimethylformamide (DMF) to prepare a compound of Formula 3 may be doing
- the reaction of introducing the aldehyde into the compound of Formula 8 is performed at a temperature of 30° C. or less, thereby stabilizing the exothermic problem caused by the Vilsmeyer-nuclear reaction.
- reaction of introducing an aldehyde into the compound of Formula 8 may be performed at a temperature of 0°C to 25°C.
- reaction of introducing an aldehyde into the compound of Formula 8 may be prepared by the following steps.
- Y is an alcohol-protecting group.
- the aldehyde is introduced without blocking the alcohol group of the compound of Formula 8 and the compound of Formula 3 can be prepared by simplifying the process, but in terms of the yield of the compound of Formula 3, the alcohol group of the compound of Formula 8 is After blocking with an alcohol protecting group, the aldehyde introduction reaction may be performed.
- Blocking the alcohol group in the compound of Formula 8 may be performed according to a known alcohol blocking method, and the method is not particularly limited.
- the alcohol protecting group (Y) introduced into the compound of Formula 8 is not particularly limited as long as it is a known alcohol protecting group, for example, an acetyl group (-Ac), a trimethylsilyl group (-TMS), and a tert-butyldimethylsilyl group. group (-TBDMS), and the like, but is not limited thereto.
- a known alcohol protecting group for example, an acetyl group (-Ac), a trimethylsilyl group (-TMS), and a tert-butyldimethylsilyl group. group (-TBDMS), and the like, but is not limited thereto.
- the step of preparing the compound of Formula 10 by introducing the aldehyde into the compound of Formula 9 in which the alcohol is blocked may be performed according to the same method as the step of introducing the aldehyde into the compound of Formula 5 in which the alcohol group is not blocked.
- the alcohol group may be recovered using an alcohol de-blocking agent suitable for the alcohol protecting group to prepare the compound of Formula 3.
- the alcohol de-blocking agent may use a known base material, for example, K 2 CO 3 , NaHCO 3 , and NaOH, and the like may be mentioned, but is not limited thereto.
- reaction solvent may be appropriately selected according to the type of the de-blocking agent used in the alcohol recovery reaction.
- the reaction solvent is an alcoholic solvent, for example, methanol, ethanol, or a mixture thereof. It may be a solvent.
- the compound of Formula 3 may be prepared.
- the compound of Formula 3 prepared as described above may be crystallized to obtain a compound of Formula 3 with high purity.
- the compound of Formula 3 is prepared through a series of steps without a purification process between each step, purity can be improved through crystallization.
- the crystallization of the compound of Formula 3 may be performed under acidic conditions.
- the acidic condition may be, for example, a condition of pH 4.0 or less, specifically, crystallization by adding an acid compound so that the pH of the solution containing the compound of Formula 3 is 3.0 to 4.0.
- the acid compound used for forming the acidic condition may be a known acid compound within a range that does not impair the structure and physical properties of the compound of Formula 3, and the type of the acid compound is not limited.
- hydrochloric acid may be added to the reaction product containing the compound of Formula 3 to perform crystallization.
- water (H 2 O) and hydrochloric acid (HCl) are simultaneously or sequentially added to the reaction product containing the compound of Formula 3 to perform crystallization.
- it may be carried out by adding hydrochloric acid after adding water to the reaction product containing the compound of Formula 3 above.
- the reaction solvent such as methanol
- crystallization of the compound of Formula 3 may be performed.
- crystallization of the compound of Formula 3 may be performed without distillation of a reaction solvent, such as methanol, after terminating the reaction for recovering the alcohol group.
- a reaction solvent such as methanol
- the crystallization of the compound of Formula 3 may be carried out at a reaction temperature of 10° C. or less.
- the reaction temperature during crystallization of the compound of Formula 3 is 10° C. or less, and the dropwise addition of hydrochloric acid is less than 2 hours, for example, 1 hour, 30 minutes, 20 minutes or 10 minutes. it could be
- the compound of Formula 8 may be prepared by a dealkylation reaction of the compound of Formula 11.
- R3 and R4 are as defined above, and R7 is substituted or unsubstituted alkyl.
- R7 may be an unsubstituted C 1 ⁇ C 4 alkyl.
- R7 may be a methyl group.
- the compound of Formula 3 may be prepared by introducing an aldehyde into the compound of Formula 11 according to the same method as the method of introducing the aldehyde into the compound of Formula 8 or Formula 9, but A problem in that the compound of Formula 11 is decomposed by performing a dealkylation reaction from the compound of Formula 11 to prepare a compound of Formula 8, and introducing an aldehyde to the compound of Formula 8 or 9 to prepare a compound of Formula 3 By improving the intermediate compound can be prepared in high yield even in mass production.
- the dealkylation reaction of the compound of Formula 11 may be performed according to a known method capable of preparing the compound of Formula 8 by substituting an alcohol group for the alkyl group of R7, which is particularly limited by the method and the type of reagent used. it is not
- the dealkylation of the compound of Formula 11 is selected from, for example, hydrogen bromide (HBr), aluminum chloride (AlCl 3 ), and iron (III) chloride (FeCl 3 ). may be used, but is not limited thereto.
- the compound prepared according to the present invention or a salt thereof may be used as a sphingosine-1-phosphate receptor agonist, but the compound prepared according to the present invention may be used for other purposes other than as a sphingosine-1-phosphate receptor agonist. , and the use of the present invention is not limited to sphingosine-1-phosphate receptor agonists.
- the use of the preparation method of the present invention has the effect of mass-producing the compound of Formula 7 in high yield and high purity.
- FIG. 2 is an SEM photograph of crystals generated when the stirring speed is changed during crystallization according to Experimental Example 2.
- Reaction IPC was carried out by HPLC and the reaction was completed (1-chloro-6-hydroxy-3,4-dihydronaphthalene-2-carbaldehyde: N/D) DCM (100 ml, 10 fold) and water ( 100 ml, 10 fold) was added and stirred for 30 minutes to proceed with the first layer separation. Water (50 ml, 5 fold) was added to the reaction mixture and stirred for 10 minutes, followed by a second layer separation. Finally, water (50 ml, 5 fold) was added and stirred for 10 minutes, followed by layer separation.
- the reaction mixture was distilled under reduced pressure to carry out DCM distillation, and to the reaction mixture containing the crude title compound obtained, EtOH (10 ml, 1 fold), IPOAc (10 ml, 1 fold), Heptane (60 ml, 6 fold) mixed solution
- EtOH 10 ml, 1 fold
- IPOAc 10 ml, 1 fold
- Heptane 60 ml, 6 fold
- the internal temperature was set to 60 °C, stirred for 1 hour, and then cooled to room temperature. After the internal temperature reached 20° C., the crystals were aged for 1 hour, followed by filtration.
- the filtered solid was washed twice with water (60 ml, 6 fold) and dried over nitrogen to synthesize the title compound (20.3 g, Net yield 85 %).
- the reaction was carried out at an internal temperature of 60 °C for 2 hours and 20 minutes, and the reaction was completed by IPC by HPLC (1-[-chloro-6-(3-chloro-1-isopropyl-1H-indazole- 5-ylmethoxy)-3,4-dihydro-naphthalen-2-ylmethyl]-piperidine-4-carboxylic acid ethyl ester: N/D)
- HPLC 1-[-chloro-6-(3-chloro-1-isopropyl-1H-indazole- 5-ylmethoxy)-3,4-dihydro-naphthalen-2-ylmethyl]-piperidine-4-carboxylic acid ethyl ester: N/D
- Example 3 (5.10 kg, 9.0 mol), EtOH (0.77 L, 2 fold), water (1.92 L, 5 fold), IPOAc (0.77 L, 2 fold), NaOH (54.4 g, 1.36 mol) were added to the reactor did. After heating at an internal temperature of 45°C for 1 hour, the internal temperature was cooled to 20°C. 6 N HCl (290 ml) was added dropwise to the reaction mixture for 1 hour and 50 minutes to acidify the pH of the solution to 1.05, then aged for 50 minutes, followed by filtration. The filtered solid was washed twice with water (1.92 L, 5 fold) and once with MTBE (1.15 L, 3 fold) and dried with nitrogen to synthesize the title compound (368 g, GMP step yield 79%).
- SG50 means "1-[1-chloro-6-(3-chloro-1-isopropyl-1H-indazol-5-ylmethoxy)-3,4-dihydro- Naphthalen-2-ylmethyl]-piperidine-4-carboxylic acid hydrochloride".
- DCM should be used at a level of 0.1 fold or less, but in Table 4, it was confirmed that it may be preferable to crystallize without using DCM because there is no significant difference in terms of purity when DCM is not used.
- the shape of the particles according to the time when hydrochloric acid was added in the crystallization process was confirmed.
- the crystals produced by adding hydrochloric acid for 10 to 60 minutes were compared, and in Easymax, it was confirmed that the particle shape was uniformly obtained when hydrochloric acid was added dropwise for 30 minutes at a stirring speed of 500 rpm (FIG. 1).
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Abstract
Description
| Entry | 반응용매 | 반응시간 (hour) |
HPLC (PAR %) |
|
| RT15 min Dimer IMP. |
SG40 | |||
| 1 | DMF | 5 | 2.61 | 97.39 |
| 16 | 5.23 | 94.77 | ||
| 2 | DMA | 5 | 0.37 | 99.63 |
| 16 | 0.42 | 99.58 | ||
| SG40 | HPLC (PAR %) |
SG40 | HPLC (PAR %) |
||
| DMF 용매 사용 batch |
RRT 0.88 | 0.06 | DMA 용매 사용 batch |
RRT 0.88 | 0.02 |
| N2 isomer | 0.04 | N2 isomer | 0.05 | ||
| RT15.0 | 4.90 | RT15.0 | 0.13 | ||
| RRT 1.44 | 0.27 | RRT 1.44 | 0.28 | ||
| Purity | 84.57 | Purity | 86.97 | ||
|
W/U 수세
(횟수) |
DMF 반응 후 W/U
Layer |
HPLC
(PAR %) |
|
|
RT15 min
Dimer IMP. |
SG40 | ||
| 1 | DCM | 4.91 | 95.09 |
| H2O | 38.45 | 61.55 | |
| 2 | DCM | 4.76 | 95.24 |
| H2O | 99.18 | 0.82 | |
| 3 | DCM | 4.58 | 95.42 |
| H2O | 77.87 | 22.13 | |
| Solvent | temp. (℃) |
투입시간 (min) |
HPLC (Area %) | Yield (%) | |||||
| RRT | - | ||||||||
| 0.88 | 0.91 | SG70 | 1.39 | 1.44 | SG50 | ||||
| SM(Starting material) | 0.135 | 0.039 | 99.050 | 0.085 | 0.095 | 0.031 | - | ||
| IPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.135 | 0.032 | 99.299 | 0.079 | 0.059 | 0.019 | 85 |
| DCM 0.1foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.141 | 0.032 | 99.286 | 0.081 | 0.055 | 0.014 | 83.5 |
| DCM 0.2foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.149 | 0.044 | 99.251 | 0.083 | 0.058 | 0.011 | 87 |
| DCM 0.3foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.145 | 0.047 | 99.254 | 0.085 | 0.051 | 0.017 | 84.5 |
| DCM 0.5foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.155 | 0.026 | 99.287 | 0.082 | 0.055 | 0.015 | 88.5 |
| Solvent | temp. (℃) |
투입시간 (min) |
잔류용매 (NMR %) | ||
| DCM | EtOH | EtOAc | |||
| SM | |||||
| IPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | - | 0.31 | 0.37 |
| DCM 0.1foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.04 | 0.28 | 0.33 |
| DCM 0.2foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.08 | 0.22 | 0.25 |
| DCM 0.3foldIPOAc 2.0fold EtOH 3.0fold Water 5.0fold |
20~25 | 120 | 0.13 | 0.21 | 0.23 |
| Solvent | 염산 투입 온도 (℃) |
염산 투입 시간 (min) |
숙성 온도 (℃) |
Purity (%) |
Yield (%) |
HPLC (Area %) | ||||||
| 0.89 | 0.91 | 0.98 | SG70 | SG70뒤 | 1.39 | 1.44 | ||||||
| 13.9' | 13.9' | 14.5' | 14.7' | 14.9' | 15.6' | 16.5' | ||||||
| SM | 0.142 | 0.108 | 0.023 | 98.933 | 0.092 | 0.088 | 0.103 | |||||
| IPOAc 2.0fold EtOH 2.0fold Water 5.0fold |
25 | 30 | 25 | 99.174 | 87.6 | 0.142 | 0.087 | 0.015 | 99.174 | 0.077 | 0.075 | 0.068 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
20 | 30 | 20 | 99.066 | 91.0 | 0.147 | 0.085 | 0.026 | 99.066 | 0.082 | 0.067 | 0.070 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
10 | 30 | 10 | 98.997 | 88.3 | 0.148 | 0.098 | 0.023 | 98.997 | 0.085 | 0.092 | 0.084 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
5 | 30 | 5 | 98.892 | 95.6 | 0.144 | 0.090 | 0.015 | 99.130 | 0.072 | 0.078 | 0.080 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
25 | 60 | 25 | 99.167 | 84.3 | 0.152 | 0.076 | 0.022 | 99.154 | 0.076 | 0.071 | 0.065 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
5 | 60 | 5 | 99.091 | 93.6 | 0.145 | 0.093 | 0.016 | 99.096 | 0.070 | 0.080 | 0.089 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
25 | 10 | 25 | 99.065 | 89.3 | 0.139 | 0.088 | 0.025 | 99.087 | 0.075 | 0.074 | 0.067 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
5 | 10 | 5 | 98.969 | 91.3 | 0.149 | 0.096 | 0.024 | 98.992 | 0.074 | 0.092 | 0.089 |
| Solvent | 염산 투입 온도 (℃) |
염산 투입 시간 (min) |
숙성 온도 (℃) |
Purity (%) |
Yield (%) |
잔류용매 | |
| IPOAc (%) |
EtOH (%) |
||||||
| IPOAc 2.0fold EtOH 2.0fold Water 5.0fold |
25 | 30 | 25 | 99.174 | 87.6 | 0.37 | 0.23 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
20 | 30 | 20 | 99.066 | 91.0 | 0.52 | 0.29 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
10 | 30 | 10 | 98.997 | 88.3 | 0.96 | 0.48 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
5 | 30 | 5 | 98.892 | 95.6 | 1.31 | 0.61 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
25 | 60 | 25 | 99.167 | 84.3 | 0.35 | 0.23 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
5 | 60 | 5 | 99.091 | 93.6 | 1.27 | 0.62 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
25 | 10 | 25 | 99.065 | 89.3 | 0.41 | 0.23 |
| IPOAc 2.0foldEtOH 2.0fold Water 5.0fold |
5 | 10 | 5 | 98.969 | 91.3 | 1.21 | 0.56 |
Claims (8)
- 다음의 단계를 포함하는 하기 화학식 7의 화합물 또는 이의 염의 제조방법:1) 디메틸아세트아마이드(DMA) 용매의 존재 하에서 화학식 2의 화합물과 화학식 3의 화합물을 커플링(coupling) 반응에 의해 화학식 4의 화합물을 제조하는 단계,2) 환원 조건에서 화학식 4의 화합물 및 화학식 5의 화합물을 반응시켜 화학식 6의 화합물 또는 이의 염을 제조하는 단계, 및3) 화학식 6의 화합물 또는 이의 염의 에스테르기를 카르복실산기로 전환하여 화학식 7의 화합물 또는 이의 염을 제조하는 단계[화학식 2][화학식 3][화학식 4][화학식 5][화학식 6][화학식 7]상기 화학식 2 내지 화학식 7에서,R1은 수소, 또는 치환 또는 비치환 알킬이고,R2는 수소, 치환 또는 비치환 알킬, 할로겐, CN, CF3 또는 COCF3이고,R3 및 R4는 각각 수소, 치환 또는 비치환 알킬, 또는 할로겐이고,R5는 수소, 치환 또는 비치환 알킬 또는 할로겐이고,R6는 치환 또는 비치환 알킬이고,X는 C 또는 N이고,Y는 N, O 또는 S이고,L은 이탈기(leaving group)이며,m 및 n은 각각 0, 1, 2 또는 3이고, m+n > 0 이다.
- 청구항 1에 있어서,R1은 C1-C4의 치환 또는 비치환된 알킬이고,R2는 할로겐이고,R3 및 R4는 각각 수소 또는 C1-C4의 치환 또는 비치환 알킬이고,R5는 할로겐이고,R6는 C1-C4의 치환 또는 비치환 알킬이고,X는 N이고,Y는 N이고,L은 염소(Cl), 브로민(Br), 아이오딘(I), 메탄설포네이트(Oms), p-톨루엔설포네이트(OTs) 및 트리플루오로메탄설포네이트(OTf)로부터 선택되는 이탈기인 것인 제조방법.
- 청구항 1에 있어서,4) 화학식 7의 화합물 또는 이의 염을 산성 조건에서 재결정화하는 단계를 더 포함하는 것인 제조방법.
- 청구항 3에 있어서,상기 재결정화된 화학식 7의 화합물 또는 이의 염을 함유하는 분획 내 디클로로메탄(DCM) 용매의 함량은 600 ppm 이하인 것인 제조방법.
- 청구항 3에 있어서,상기 재결정화를 위한 용매는 물, 에스테르 용매, 알코올 용매 또는 이들의 혼합 용매를 포함하는 것인 제조방법.
- 청구항 5에 있어서,상기 재결정화를 위한 용매는 물, 아이소프로필아세테이트 및 에탄올을 포함하는 것인 제조방법.
- 청구항 3에 있어서,상기 재결정화 단계는 0~25℃의 온도에서 산 화합물을 첨가하는 것을 포함하는 것인 제조방법.
- 청구항 3에 있어서,상기 재결정화 단계는 100 내지 500 rpm으로 교반하는 것을 포함하는 것인 제조방법.
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| US18/555,233 US20240228461A1 (en) | 2021-04-14 | 2022-04-14 | Novel method for preparing sphingosine-1-phosphate receptor agonist |
| EP22788468.1A EP4306516A4 (en) | 2021-04-14 | 2022-04-14 | NEW METHOD FOR THE PRODUCTION OF A SPHINGOSINE-1-PHOSPHATE RECEPTOR AGONIST |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1826197A1 (en) * | 2004-12-13 | 2007-08-29 | Ono Pharmaceutical Co., Ltd. | Aminocarboxylic acid derivative and medicinal use thereof |
| US20110152241A1 (en) * | 2009-11-24 | 2011-06-23 | Allergan, Inc. | Novel compounds as receptor modulators with therapeutic utility |
| KR20110140139A (ko) * | 2003-08-29 | 2011-12-30 | 오노 야꾸힝 고교 가부시키가이샤 | S1p 수용체 결합능을 갖는 화합물 및 그 의약 용도 |
| KR20140104376A (ko) | 2013-02-20 | 2014-08-28 | 주식회사 엘지생명과학 | 스핑고신-1-인산 수용체 효능제, 그의 제조방법 및 그를 활성성분으로서 함유하는 약제학적 조성물 |
| KR101589332B1 (ko) * | 2008-12-05 | 2016-01-27 | 아스텔라스세이야쿠 가부시키가이샤 | 2h-크로멘 화합물 및 그의 유도체 |
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| TW593683B (en) * | 2000-10-04 | 2004-06-21 | Aviva Biosciences Corp | Apparatuses containing multiple force generating elements and uses thereof |
| US7825109B2 (en) * | 2003-08-29 | 2010-11-02 | Ono Pharmaceutical Co., Ltd. | Compound capable of binding S1P receptor and pharmaceutical use thereof |
| EP2364089B1 (en) * | 2008-10-30 | 2016-12-07 | Biogen MA Inc. | Heterobicyclic sphingosine 1-phosphate analogs |
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- 2022-04-14 TW TW111114184A patent/TWI823341B/zh active
- 2022-04-14 US US18/555,233 patent/US20240228461A1/en active Pending
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110140139A (ko) * | 2003-08-29 | 2011-12-30 | 오노 야꾸힝 고교 가부시키가이샤 | S1p 수용체 결합능을 갖는 화합물 및 그 의약 용도 |
| EP1826197A1 (en) * | 2004-12-13 | 2007-08-29 | Ono Pharmaceutical Co., Ltd. | Aminocarboxylic acid derivative and medicinal use thereof |
| KR101589332B1 (ko) * | 2008-12-05 | 2016-01-27 | 아스텔라스세이야쿠 가부시키가이샤 | 2h-크로멘 화합물 및 그의 유도체 |
| US20110152241A1 (en) * | 2009-11-24 | 2011-06-23 | Allergan, Inc. | Novel compounds as receptor modulators with therapeutic utility |
| KR20140104376A (ko) | 2013-02-20 | 2014-08-28 | 주식회사 엘지생명과학 | 스핑고신-1-인산 수용체 효능제, 그의 제조방법 및 그를 활성성분으로서 함유하는 약제학적 조성물 |
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| See also references of EP4306516A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240217935A1 (en) * | 2021-04-14 | 2024-07-04 | Lg Chem, Ltd. | Method for preparing intermediate for synthesis of sphingosine-1-phosphate receptor agonist |
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| Publication number | Publication date |
|---|---|
| EP4306516A1 (en) | 2024-01-17 |
| EP4306516A4 (en) | 2024-09-11 |
| CN117136183B (zh) | 2026-03-31 |
| KR20220142390A (ko) | 2022-10-21 |
| US20240228461A1 (en) | 2024-07-11 |
| CN117136183A (zh) | 2023-11-28 |
| TW202246235A (zh) | 2022-12-01 |
| KR102802372B1 (ko) | 2025-05-07 |
| TWI823341B (zh) | 2023-11-21 |
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