Classifications

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  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/12—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
  • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
  • C07D209/04—Indoles; Hydrogenated indoles
  • C07D209/08—Indoles; Hydrogenated indoles with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
  • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
  • C07D233/56—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
  • C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
  • C07D249/08—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
• • 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
  • C07D401/10—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 carbon chain containing aromatic rings
• • 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
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
  • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
  • C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
  • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
  • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
  • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
  • C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
  • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
  • C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
  • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
  • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

• the present invention relates to novel piperazine derivatives, processes for their preparation, and pharmaceutical compositions containing them.
• 5 WO 95/06637, WO 95/06044 and WO 95/04729 disclose a series of piperazine derivatives which are said to possess 5HTIJJ receptor antagonist activity. These compounds are alleged to be of use in the treatment of various CNS disorders such as depression.
• EPA 0533266/7/8 disclose a series of benzanilide derivatives which are said to possess 5-HTI J receptor antagonist activity.
• the present invention therefore provides a compound of formula (I) or a salt thereof:
• R a is a group of formula (i)
• pi is phenyl, bicyclic aryl, a 5 to 7 membered heterocyclic ring containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur, or a bicyclic heterocyclic ring containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur;
• 25 R.1 is hydrogen, halogen, C ⁇ .galkyl, C3_6cycloalkyl, COCj.g ⁇ y .
• R 2 is hydrogen, halogen, C ⁇ alkyl, C ⁇ . ⁇ cycloalkyl, C3_6cycloalkenyl, C ⁇ alkoxy, C ⁇ galkanoyl, aryl, acyloxy, hydroxy, nitro, trifluoromethyl, cyano, CO 2 RlO, CO 10R.11 , NRIORI 1 w here R 10 and R 11 are as defined for R 1 ; a is 1, 2 or 3; or R a is a group of formula (ii)
• P 2 and P ⁇ are independently phenyl, bicyclic aryl, a 5- to 7- membered heterocyclic ring containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur, or a bicyclic heterocyclic group containing 1 to 3 heteroatoms selected from oxygen, nitrogen or sulphur;
• A is a bond or oxygen, S(O) m where m is 0 to 2, carbonyl, CH , -CH -CH -, or N ⁇ where R ⁇ is hydrogen or Ci.galkyl; Rl is as defined above for formula (i) or R is a 5 to 7-membered heterocyclic ring, containing 1 to 3 heteroatoms selected from oxygen, nitrogen or sulphur, optionally substituted by C ⁇ . alkyl, halogen or C ⁇ . alkanoyl;
• R 2 and R ⁇ are independently hydrogen, halogen, Cj.galkyl, C3_6cycloalkyl,
• Y is -NH-, -NR 5 - where R 5 is C ⁇ alkyl, or Y is -CH - or -O-; V is oxygen or sulphur; D is nitrogen, carbon or a CH group; W is (CR ⁇ Rl7) t where t is 2, 3 or 4 and R ⁇ 0" and Rl7 are independently hydrogen or Ci- ⁇ alkyl or W is (CR ⁇ R17)
• X is nitrogen or carbon;
• Rb is hydrogen, halogen, hydroxy, C ⁇ .galkyl, trifluoromethyl, C ⁇ _6alkoxy, C _6alkenyl, C3_7cycloalkyl optionally substituted by C ⁇ alkyl, or aryl;
• R c is hydrogen
• C i _6alkyl groups whether alone or as part of another group may be straight chain or branched.
• the term 'acyloxy' is used herein to describe a group -OC(O)C ⁇ _6alkyl.
• the term 'aryl' is used herein to describe, unless otherwise stated, a group such as phenyl.
• the term 'aralkyl' is used herein to describe, unless otherwise stated, a group such as benzyl.
• the bicyclic aryl group represented by P , P 2 and or P ⁇ , which may be partially saturated, is preferably naphthyl.
• bicyclic heterocyclic rings containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur include isoquinoline, indole, benzofuran, benzothiophene and preferably quinoline.
• Examples of 5 to 7 membered heterocyclic rings containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur represented by P , P 2 and/or P- include thienyl, furyl, pyrrolyl, triazolyl, imidazolyl, oxazolyl, thiazolyl, oxadiazolyl, isothiazolyl, isoxazolyl, thiadiazolyl, pyrimidyl, pyridazinyl and pyrazinyl, and preferably pyridyl.
• heterocyclic rings as described above can be linked to the remainder of the molecule via a carbon atom or, when present, a suitable nitrogen atom. Such rings can also be saturated or partially saturated. Examples of saturated or partially saturated 5 to 7 membered heterocyclic rings include piperidine, pyrrolidine and morpholine. Examples of partially saturated bicyclic heterocyclic rings include dihydrobenzofuran, dihydrobenzothiophene, tetrahydroquinioline and tetrahydroisoquinoline Rl is preferably a halogen atom for example, fluorine, chlorine or bromine, and
• R 2 and/or R ⁇ are each preferably hydrogen, halogen for example a chloro group, or a C ⁇ _ galkyl group for example a methyl group.
• suitable optional substituents include C ⁇ . ⁇ alkyl, ⁇ . alkanoyl and halogen.
• a and b are each preferably 1 or 2.
• A is preferably a bond or oxygen, most preferably a bond.
• Y is preferably -NH-.
• V is preferably oxygen.
• D is preferably nitrogen and the group W is preferably a (CR ⁇ Rl 7 ) ⁇ group where
• Rl6 and R* 7 are each advantageously hydrogen and t is suitably 2.
• R D is preferably hydrogen or a halogen atom for example chlorine, a Cj.galkoxy group for example methoxy or a C ⁇ . ⁇ alkyl group such as methyl or ethyl.
• X is preferably nitrogen.
• R c is preferably a Ci- ⁇ lkyl group for example methyl.
• Particularly preferred compounds according to the invention include :- l-[(4-bromo-3-methylphenyl)aminocarbonyl]-5-methoxy-6-(4-methylpiperazin-l-yl)-lH- indole, 1 -[(4-bromo-3-methylphenyl)aminocarbonyl]-2,3-dihydro-5-methoxy-6-(4- methylpiperazin- 1 -yl)- 1 H-indole,
• Preferred salts of the compounds of formula (I) are pharmaceutically acceptable salts. These include acid addition salts such as hydrochlorides, hydrobromides, phosphates, acetates, fumarates, maleates, tartrates, citrates, oxalates, methanesulphonates and p-toluenesulphonates.
• acid addition salts such as hydrochlorides, hydrobromides, phosphates, acetates, fumarates, maleates, tartrates, citrates, oxalates, methanesulphonates and p-toluenesulphonates.
• Certain compounds of formula (I) are capable of existing in stereoisomeric forms.
• the present invention provides a process for the preparation of a compound of formula (I) or a pharmaceutically acceptable salt thereof which comprises:
• R a -NC( V) (II) in which R a and V are as defined in formula (I) or a protected derivative thereof with a compound of formula (III):
• Y is -CH 2 - or -O- and L 2 is an appropriate leaving group, with a compound of formula (HI); d) where D is carbon or CH, reacting a compound of formula (VI)
• D is carbon or CH
• W, X, R D and R c are as defined in formula (I) and L 2 is an appropriate leaving group and optionally thereafter: • removing any protecting groups
• reaction in process (a) is conveniently effected in an organic solvent such as dichloromethane.
• the urea forming agent can be carbonyl diimidazole, triphosgene or phosgene, and carried out in an inert organic solvent such as dimethylformamide, tetrahydrofuran or dichloromethane at ambient or elevated temperature in the presence of a base such as triethylamine or pyridine.
• the leaving group L 2 may be a halogen e.g. chloro group and the reaction may be carried out in an inert organic solvent such as tetrahydrofuran or dichloromethane at ambient or elevated temperature in the presence of a base such as triethylamine or pyridine.
• the leaving group L 2 may be a halogen e.g.
• Carboxylic acid groups can be protected as esters.
• Aldehyde or ketone groups can be protected as acetals, ketals, thioacetals or thioketals. Deprotection is achieved using standard conditions.
• 5 HTiA/lB/lD receptor antagonists, and in particular the compounds of the present invention, are expected to be of use in the treatment of CNS disorders such as mood disorders, including depression, seasonal affective disorder and dysthymia; anxiety disorders, including generalised anxiety, panic disorder, agoraphobia, social phobia, obsessive compulsive disorder and post-traumatic stress disorder; memory disorders, including dementia, amnestic disorders and age-associated memory impairment; disorders of eating behaviours, including anorexia nervosa and bulimia nervosa and sleep disorders (including disturbances of Circadian rhythm).
• CNS disorders include motor disorders such as Parkinson's disease, dementia in Parkinson's disease, neuroleptic- induced Parkinsonism and tardive dyskinesias, as well as other psychiatric disorders.
• 5WT ⁇ A/IB/ID receptor antagonists, and in particular compounds of the present invention may also be of use in the treatment of endocrine disorders such as hyperprolactinaemia, in the treatment of vasospasm (particularly in the cerebral vasculature) and hypertension, as well as disorders in the gastrointestinal tract where changes in motility and secretion are involved. They may also be of use in the treatment of sexual dysfunction and hypothermia.
• the present invention also provides a compound of general formula (I) or a physiologically acceptable salt or solvate thereof for use in the treatment of the aforementioned disorders.
• the invention provides a method of treating the aforementioned disorders which comprises administering an effective amount to a patient in need of such treatment of a compound of general formula (I) or a pharmaceutically acceptable salt or solvate thereof.
• a compound of general formula (I) or a physiologically acceptable salt or solvate thereof for use in the treatment or prophylaxis of depression.
• the compounds according to the invention may advantageously be used in conjunction with one or more other therapeutic agents, for instance, different antidepressant agents.
• the present invention also provides a pharmaceutical composition, which comprises a compound of formula (I) or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier.
• a pharmaceutical composition of the invention which may be prepared by admixture, suitably at ambient temperature and atmospheric pressure, is usually adapted for oral, parenteral or rectal administration and, as such, may be in the form of tablets, capsules, oral liquid preparations, powders, granules, lozenges, reconstitutable powders, injectable or infusible solutions or suspensions or suppositories. Orally administrable compositions are generally preferred. Tablets and capsules for oral administration may be in unit dose form, and may contain conventional excipients, such as binding agents, fillers, tabletting lubricants, disintegrants and acceptable wetting agents. The tablets may be coated according to methods well known in normal pharmaceutical practice.
• Oral liquid preparations may be in the form of, for example, aqueous or oily suspension, solutions, emulsions, syrups or elixirs, or may be in the form of a dry product for reconstitution with water or other suitable vehicle before use.
• Such liquid preparations may contain conventional additives such as suspending agents, emulsifying agents, non-aqueous vehicles (which may include edible oils), preservatives, and, if desired, conventional flavourings or colorants.
• fluid unit dosage forms are prepared utilising a compound of the invention or pharmaceutically acceptable salt thereof and a sterile vehicle.
• the compound depending on the vehicle and concentration used, can be either suspended or dissolved in the vehicle.
• the compound can be dissolved for injection and filter sterilised before filling into a suitable vial or ampoule and sealing.
• adjuvants such as a local anaesthetic, preservatives and buffering agents are dissolved in the vehicle.
• the composition can be frozen after filling into the vial and the water removed under vacuum.
• Parenteral suspensions are prepared in substantially the same manner, except that the compound is suspended in the vehicle instead of being dissolved, and sterilisation cannot be accomplished by filtration.
• the compound can be sterilised by exposure to ethylene oxide before suspension in a sterile vehicle.
• a surfactant or wetting agent is included in the composition to facilitate uniform distribution of the compound.
• composition may contain from 0.1% to 99% by weight, preferably from 10 to 60% by weight, of the active material, depending on the method of administration.
• suitable unit doses may be 0.05 to 1000 mg, more suitably 1.0 to 200 mg, and such unit doses may be administered more than once a day, for example two or three a day. Such therapy may extend for a number of weeks or months.
• Tetrabutylammonium iodide (0.150g) was added, followed by a solution of sodium azide (4.36g, 0.066 mole) in water (75ml) and the mixture was stirred vigorously at 0°C for 3h, then diluted with water (200ml) and the dichloromethane layer separated, dried (Na 2 SO 4 ) and concentrated in vacuo (but not to complete dryness) to afford the acyl azide as a pale orange solid.
• This material was dissolved in toluene (300ml) and heated under reflux for lh with stirring, then cooled and concentrated in vacuo to afford the title compound as a red brown oil (9.42g, 95%).
• reaction mixture was allowed to cool, diluted with EtOAc (150 ml), then extracted with 0.5M HCl acid (2 x 100 ml).
• the acid extract was basified by addition of solid K 2 CO3, then extracted with DCM (2 x 100 ml) and the extract dried (Na 2 SO4) and concentrated in vacuo to afford the title compound as a beige solid (480 mg, 95%).
• the title compound was prepared from 5 -bromonaphth-1 -ylacetic acid (Bull. Soc. Chim.
• the 2-butanol was removed in vacuo and the residue partitioned between H 2 O (300 ml) and CH 2 C1 2 (300ml).
• the CH 2 C1 2 was separated and the aqueous re-extracted with CH 2 C1 2 (3 x 200ml).
• the organics were combined, dried (Na 2 SO 4 ) and concentrated in vacuo to afford an orange oil, which was purified by column chromatography on silica gel eluting with 0-4% MeOH/CH 2 Cl 2 .
• the title compound was an orange oil (16.72g, 70%).
• the aqueous was basified to pHIO with K 2 CO 3 and extracted into CH 2 C1 2 (3 x 300ml). The organics were combined, dried (Na 2 SO 4 ) and concentrated in vacuo to give a dark brown oil, which was purifed by column chromatography on basic alumina eluting with 2% MeOH CH 2 Cl 2 . The title compound was a yellow solid (4.05g, 52%).
• the title compound was prepared from 4-(2-methyl-pyridin-4-yl)benzoic acid (D48) using a similar procedure to Description 1 to form the isocyanate, then by base hydrolysis using NaOH, to afford the amine as a beige solid (31%).
• the title compound was prepared from 4-(isoquinolin-4-yl)benzoic acid (D53) using a similar procedure to Description 1.
• the isocyanate was used as its toluene solution without concentration to the neat compound.
• the title compound was prepared from 4-carboxyphenylboronic acid and 8- bromoquinoline using a similar procedure to Description 2, obtained as a white solid (65%).
• the title compound was prepared from 4-(quinolin-8-yl)benzoic acid (D57) using a similar procedure to Description 51.
• the isocyanate was used as its toluene solution without concentration to the neat compound.
• the title compound was prepared from 4-(2,6-dimethyl-pyridin-4-yl)benzoic acid (D60) using a similar procedure to Description 1.
• the isocyanate was used as its toluene solution without concentration to the neat compound.
• the title compound was prepared from 4-(2,6-dimethyl-pyridin-3-yl)benzoic acid (D61) using a similar procedure to Description 1.
• the isocyanate was used as its toluene solution without concentration to the neat compound.
• the title compound was prepared from 8-bromo-5-nitroquinoline (D64) and phenylboronic acid using a similar procedure to Description 2, as an orange/brown solid (99%).
• the title compound was prepared from 5-nitro-8-phenylquinoline (D65) using a similar procedure to Description 20, as an orange/brown solid (97%).
• the title compound was prepared from 8-phenylquinoline-4-carboxylic acid (D 85) using a similar procedure to Description 1.
• the isocyanate was used as its toluene soloution without concentration to the neat compound.
• the title compound was prepared from 5-(6-methyl-pyridin-2-yl)-l-naphthoic acid (D91) using a similar procedure to Description 1.
• the isocyanate was not isolated, but used in the next step as its toluene solution.
• the title compound was prepared from 5-chloro-2,3-dihydro-6-(piperazin-l-yl)-l- trifluoroacetyl-1 H-indole (D94) and di-tert-butyl dicarbonate using a similar procedure to Description 95, as a brown foam (100%).
• the title compound was prepared from 2,6-dimethyl-4-iodopyridine (Dl 17) and 5- carboxynaphth-1-ylboronic acid (D90) using a similar procedure to Description 2 as a white solid (70%).
• the title compound was prepared from 5-(2,6-dimethyl-pyridin-4-yl)-l-naphthoic acid (Dl 18) using a similar procedure to Description 1.
• the isocyanate was not isolated, but used as its toluene solution in the next step.
• the title compound was prepared from 2-bromothiazole and 4-amino-2- methylphenylboronic acid (D87) using a similar procedure to Description 2 as a yellow/brown oil (65%).
• the title compound was prepared from 5-(pyrimidin-5-yl)-l-naphthoic acid (D122) using a similar procedure to Decsription 1.
• the isocyanate was not isolated, but used as its toluene solution in the next step.
• the title compound was prepared from 5-hydroxynaphth-l-ylamine and 2- bromopyrimidine using a similar procedure to Description 70, as a pale buff coloured powder (58%).
• the title compound was prepared from 4-(pyridin-4-yl)naphth-l-ylamine (D2) and 2,3- dihydro-6-(4-methylpiperazin-l-yl)-l H-indole (Dl 1) using a similar procedure to Example 4 as a beige solid (50%).
• the title compound was prepared from 4-(pyridin-4-yl)naphth-l-ylamine (D2) and 2,3- dihydro-5-methyl-6-(4-methylpiperazin-l-yl)-lH-indole (D17) using a similar procedure to Example 4 (52%). This material was converted to its hydrochloride salt as a yellow solid from acetone.
• Example 14 l-[3-Chloro-4-(pyridin-4-yl)phenylaminocarbonyl]-2,3-dihydro-5-methyl-6-(4- methylpiperazin-1 -yl)-l H-indole
• the title compound was prepared from 3-chloro-4-(pyridin-4-yl)aniline (D6) and 2,3- dihydro-5-methyl-6-(4-methylpiperazin-l-yl)-lH-indole (D17) using a similar procedure to Example 4 as a white solid (67%).
• Example 4 as a white solid (33%).
• the title compound was prepared from 4-(pyridin-4-yl)naphth-l-ylamine (D2) and 2,3- dihydro-6-(4-methylpiperazin-l-yl)-5-trifluoromethyl-lH-indole (D23) using a similar procedure to Example 4 as a beige solid (42%). This material was converted to its hydrochloride salt as a yellow solid from acetone.
• Example 30 l-[4-(t-Butoxycarbonylamino)phenylaminocarbonyl]-5-chloro-2,3-dihydro-6-(4- methylpiperazin-l-yl)-lH-indole
• the title compound was prepared from 4-(t-butoxycarbonylamino)aniline (D40) and 5- chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) using a similar procedure to Example 4 (29%).
• the title compound was prepared from 5 -(pyridin-4-yl)naphth-l -ylacetic acid (D25) and 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) using a similar procedure to Example 20.
• the title compound was prepared from 5 -(pyridin-4-yl)naphth-l -ylacetic acid (D25) and 5-bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D15) using a similar procedure to Example 20.
• the title compound was prepared from 5-chloro-2,3-dihydro-l-(4- iodophenylaminocarbonyl)-6-(4-methylpiperazin-l-yl)-l H-indole (D43) and 2- bromothiazole using a similar procedure to D51 (8%).
• the title compound was prepared from 5-chloro-2,3-dihydro-l-(4- iodophenylaminocarbonyl)-6-(4-methylpiperazin-l-yl)-l H-indole (D43) and 5- acetylthien-2-ylboronic acid in a similar manner to Description 2, obtained a straw coloured solid (42%).
• the title compound was prepared from 5-amino-8-phenylquinoline (D66) and 5- chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) using a similar procedure to Example 4, as a cream coloured solid (40%).
• the title compound was prepared from 5-amino-8-phenylquinoline (D66) and 5- bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D15) using a similar procedure to Example 4, as a cream coloured solid (25%).
• the title compound was prepared from 6-amino-2-(2-phenylethyl)quinoline (D69) and 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) using a similar procedure to Example 4, as a white solid (77%).
• the title compound was prepared from 4-(quinolin-3-yl)phenyl isocyanate (D56) and 5-bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D15) using a similar procedure to Example 2, as an off white solid (6%).
• the title compound was prepared from 4-(quinolin-3-yl)phenyl isocyanate (D56) and 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) using a similar procedure to Example 2, as a light beige solid (10%).
• the title compound was prepared from 7-amino-2-methyl- 1,2,3,4- tetrahydroisoquinoline (D78) and 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l- yl)-l H-indole (D13) using a similar procedure to Example 4 as a off-white solid (23%).
• the title compound was prepared from 5-amino-8-phenylquinoline (D66) and 2,3- dihydro-5-methoxy-6-(4-methylpiperazin-l-yl)-lH-indole (intermediate 3 in WO 95/06627) using a similar procedure to Example 4, as a yellow/brown oil (20%). This was converted to the HCl salt as a yellow solid from acetone.
• Example 80 5-Chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-l-[(8-phenylquinolin-4- yl)aminocarbonyl]-lH-indole
• the title compound was prepared from 8-phenylquinolin-4-yl isocyanate (D86) and 5- chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) using a similar procedure to Example 2, as a yellow solid (75%).
• 6-(4-methylpiperazin-l-yl)-lH-indole The title compound was prepared from 3-methyl-4-(6-methylpyridin-2-yl)aniline (D89) and 2,3-dihydro-5-methoxy-6-(4-methylpiperazin- 1 -yl)- 1 H-indole (intermediate 3 in WO 95/06627) using a similar procedure to Example 4 as a pale yellow foam (84%). This was converted to its hydrochloride salt as a yellow solid from acetone.
• the title compound was prepared from 5-(6-methylpyridin-2-yl)naphth-l-yl isocyanate (D92) and 2,3-dihydro-5-methoxy-6-(4-methylpiperazin-l-yl)-lH- indole (intermediate 3 in WO 95/06627) using a similar procedure to Example 4 as a pale yellow foam (55%). This was converted to its hydrochloride salt as a pale yellow solid from acetone.
• the title compound was prepared from 5-(pyridin-4-yl)naphth-l -ylamine (D74) and 5- chloro-2,3-dihydro-6-(4-ethylpiperazin-l-yl)-lH-indole (D97) using a similar procedure to Example 4, as a beige solid (68%).
• the HCl salt was isolated as a yellow solid from acetone.
• the title compound was prepared from 4-(pyridizin-3-yl)benzoic acid (D102) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5- chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) to afford the urea as a pale yellow solid (7%).
• the title compound was prepared from 4-(pyridazin-3-yl)benzoic acid (D102) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5- bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-l H-indole (D15) to afford the urea as a grey solid (3%).
• the title compound was prepared from 4-(pyrazin-2-yl)benzoic acid (D103) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5- chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-l H-indole (D13) to afford the urea as a pale yellow solid (30%).
• the title compound was prepared from 4-(pyrazin-2-yl)benzoic acid (D103) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5- bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D15) to afford the urea as a pale yellow solid (49%).
• the title compound was prepared from 6-phenylnicotinic acid (D104) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5-bromo-2,3- dihydro-6-(4-methylpiperazin-l-yl)-l H-indole (D15) to afford the urea as an off white solid (46%).
• the title compound was prepared from 5-chloro-2,3-dihydro-l-(4- iodophenylaminocarbonyl)-6-(4-methylpiperazin-l-yl)-lH-indole (D43) and 3- pyridylboronic acid (Chem. Pharm. Bull, 1983, 31(12), 4573) in a similar manner to Description 2, obtained as a pale cream powder (19%).
• the title compound was prepared from 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)- lH-indole (D13) and 4-(5-methyloxazol-2-yl)aniline (D107) using a similar procedure to Example 4, obtained as a pale cream powder (63%).
• the title compound was prepared from 4-(l-methylpyrazol-4-yl)benzoic acid (WO 97/43262) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5-bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D15) to afford the urea as a buff solid (30%).
• the title compound was prepared from 4-(4-cyano-3-methylphenyl)benzoic acid (D106) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5-bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D15) to afford the urea as a buff solid (28%).
• the title compound was prepared from 4-(2-methylpyridin-5-yl)benzoic acid (WO 97/43262) using a similar procedure to Description 1 to form the isocyanate followed by addition of 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH-indole (D13) to afford the urea as a buff solid (2%).
• the title compound was prepared from 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)- 1 H-indole (D13) and 5-(3-methyl-l,2,4-oxadiazol-5-yl)naphth-l -ylamine (Di l l) using a similar procedure to Example 4.
• the title compound was converted to the hydrochloride salt as a pale buff powder (59%).
• the title compound was prepared from 2,3-dihydro-5-methoxy-6-(4-methylpiperazin-l- yl)-lH-indole (intermediate 3 in WO 95/06627) and 5-(3-methyl-l,2,4-oxadiazol-5- yl)naphth-l -ylamine (Dl 11) in a similar procedure to Example 4.
• the title compoxmd was converted to the hydrochloride salt as colourless powder (68%).
• the title compound was prepared from 5-chloro-2,3-dihydro-6-(4-methylpiperazin-l-yl)- lH-indole (D13) and 5-(5-methyloxazol-2-yl)naphth-l-ylamine (D114) in a similar procedure to Example 4, converted to the hydrochloride salt as a pale yellow power (41%).
• Example 4 using a similar procedure to Example 4 as a beige foam (32%). This foam was converted to its hydrochloride salt as a yellow-brown solid from acetone.
• ⁇ NMR (HCl salt) 250MHz, d 6 DMSO) ⁇ (ppm): 10.45 (br s, IH), 8.90 (d, 2H), 8.59 (s, IH), 7.83 (d, IH), 7.67 (s, IH), 7.60 (m, 2H), 7.40 (t, IH), 6.92 (s, IH), 4.15 (t, 2H), 3.77 (s, 3H), 3.45 (m, 4H), 3.17 (m, 4H), 2.96 (t, 2H), 2.82 (d, 3H), 2.54 (s, 3H).
• the title compound was prepared from 3-methyl-4-(pyrimidin-5-yl)aniline (Dl 16) and 5- bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-l H-indole (D15) using a similar procedure to Example 4 as a foam (82%). This foam was converted to its hydrochloride salt as an off white solid from acetone.
• the title compound was prepared from 4-(2,6-dimethylpyridin-4-yl)-3- methylaniline (D88) and 5-bromo-2,3-dihydro-6-(4-methylpiperazin-l-yl)-lH- indole (D15) using a similar procedure to Example 4 as a pale yellow foam (89%). This was converted to its hydrochloride salt as a pale yellow solid from acetone.
• the title compound was prepared from 4-(2,6-dimethylpyridin-4-yl)-3- methylaniline (D88) and 2,3-dihydro-5-methoxy-6-(4-methylpiperazin-l-yl)-lH- indole (intermediate 3 in WO 95/06627) using a similar procedure to Example 4 as a pale yellow foam (95%). This was converted to its hydrochloride salt as a yellow solid from acetone.

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