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  • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
  • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
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  • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
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  • A61K31/5375—1,4-Oxazines, e.g. morpholine
  • A61K31/5377—1,4-Oxazines, e.g. morpholine not condensed and containing further heterocyclic rings, e.g. timolol
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  • C07D401/14—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 three or more hetero rings
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Definitions

• the present invention relates to novel compounds effective for prevention and treatment of various diseases associated with abnormal angiogenesis, and to the medical compositions such as angiogenesis inhibitors and antitumor agents containing the novel compounds.
• Angiogenesis is an essential biological phenomenon for fetal vascular formation and morphological and functional development of organs. New blood vessels are assembled through several processes including endothelial cell migration, proliferation and tube formation, and the participation of mast cells, lymphocytes, interstitial cells and the like has been shown to be important in this process (non-patent literature 1).
• VEGF Vascular Endothelial Growth Factor
• FGF Fibroblast Growth Factor
• Patent literature 1 and 2 are provided as prior arts with regard to 6-membered nitrogen-containing aromatic derivatives bonded with substituted indole.
• patent literature 1 describes indole derivatives which suppress VEGF-stimulated angiogenesis based on a selective tyrosine kinase inhibition, the pharmacological test results on their inhibition action are not disclosed.
• patent literature 2 describes pyridine derivatives bonded with indole ring via an oxygen atom at the 4-position, neither the compound according to the present invention nor their inhibiting actions on FGF-stimulated angiogenesis are disclosed.
• angiogenesis-inhibiting compounds which: (1) exhibit antitumor activity by strongly suppressing both of angiogenesis included by VEGF and FGF which are major in vivo angiogenesis factors, (2) are highly useful as drug materials in terms of their properties, biokinetics and safety, and (3) are useful for amelioration, prevention and treatment of various diseases associated with abnormal increase in angiogenesis.
• the present invention provides the followings:
• the structural formula of a compound may indicate a certain isomer for convenience's sake in this specification
• the present invention include all geometrical isomers generated in the structures of compounds, isomers such as optical isomers based on asymmetric carbon atom, stereoisomers and tautomers, and a mixture of isomers, which are not limited to the descriptions of formulas for convenience's sake, either of isomers or mixtures may be included. Therefore, although optically active compounds and racemic compounds may be existent when they have asymmetric carbon atoms in a molecule, they are not particularly limited in the present invention and any cases are included. In addition, although a variety of crystal morphism are existent, these are not limited similarly. Specifically, any of a single crystal form or mixtures may be included, in addition, anhydrates, hydrates or solvates may be included.
• compounds according to the present invention also include compounds which still indicate a desired activity after they are subjected to metabolism such as oxidation, reduction, hydrolysis and conjugation in an organism, and the present invention also includes compounds which produce the compounds according to the present invention after they are subjected to metabolism such as oxidation, reduction and hydrolysis.
• C 1-6 alkyl group represents a linear or branched alkyl group of 1 to 6 carbon atoms, which is a monovalent group derived by removing a hydrogen atom from an aliphatic hydrocarbon of 1 to 6 carbon atoms.
• C 2-6 alkenyl group represents a linear or branched alkenyl group of 2 to 6 carbon atoms which may contain 1 to 2 double bonds.
• ethenyl group 1-propenyl group, 2-propenyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group, 2-methyl-1-propenyl group, pentenyl group, hexenyl group, hexandienyl group or the like, and preferably ethenyl group, 1-propenyl group, 2-propenyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group and 2-methyl-1-propenyl group.
• C 3-6 alkenyl group represents a linear or branched alkenyl of 3 to 6 carbon atoms which may contain 1 to 2 double bonds.
• C 2-6 alkynyl group represents a linear or branched alkynyl group of 2 to 6 carbon atoms which may contain 1 to 2 triple bonds.
• ethynyl group 1-propynyl group, 2-propynyl group, 1-butynyl group, 2-butynyl group, 3-butynyl group, pentynyl group, hexynyl group, hexandiynyl group or the like, and preferably ethynyl group, 1-propynyl group, 2-propynyl group, 1-butynyl group, 2-butynyl group and 3-butynyl group.
• C 3-6 alkynyl group represents a linear or branched alkynyl group of 3 to 6 carbon atoms which may contain 1 to 2 triple bonds.
• C 3-8 cycloalkyl group represents a cyclic aliphatic hydrocarbon group of 3 to 8 carbon atoms, and as specific examples there may be mentioned cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group or the like, and preferably cyclopropyl group, cyclobutyl group and cyclopentyl group.
• C 1-6 alkylene group represents a divalent group derived by further removing a hydrogen atom from the aforementioned definition of “C 1-6 alkyl group.”
• methylene group ethylene group, methylethylene group, propylene group, ethylethylene group, 1,1-dimethylethylene group, 1,2-dimethylethylene group, tetramethylene group, pentamethylene group, hexamethylene group or the like, and preferably methylene group and ethylene group.
• C 1-6 alkoxy group represents an oxy group bonded with the aforementioned definition of “C 1-6 alkyl group.”
• C 1-6 alkylthio group represents a thio group bonded with the aforementioned definition of “C 1-6 alkyl group.”
• methylthio group ethylthio group, n-propylthio group, i-propylthio group, n-butylthio group, i-butylthio group, sec-butylthio group, t-butylthio group, n-pentylthio group, i-pentylthio group, sec-pentylthio group, neopentylthio group, 1-methylbutylthio group, 2-methylbutylthio group, 1,1-dimethylpropylthio group, 1,2-dimethylpropylthio group, n-hexylthio group, i-hexylthio group, 1-methylpentylthio group, 2-methylpentylthio group, 3-methylp
• C 6-10 aryl group represents an aromatic hydrocarbon ring group of 6 to 10 carbon atoms.
• phenyl group 1-naphthyl group, 2-naphthyl group, indenyl group, azulenyl group, heptalenyl group or the like, and preferably phenyl group, 1-naphthyl group and 2-naphthyl group.
• C 6-10 aryloxy group as described in the specification represents an oxy group bonded with the aforementioned definition of “C 6-10 aryl group.”
• phenoxy group 1-naphthyloxy group, 2-naphthyloxy group, indenyloxy group, azulenyloxy group, heptalenyloxy group or the like, and preferably phenoxy group, 1-naphthyloxy group and 2-naphthyloxy group.
• halogen atom as described in the specification represents fluorine atom, chlorine atom, bromine atom or iodine atom, and preferably fluorine atom, chlorine atom and bromine atom.
• heteroatom as described in the specification represents nitrogen atom, sulfur atom, or oxygen atom.
• 5- to 10- membered aromatic heterocycle represents an aromatic ring in which the number of atoms forming the ring is 5 to 10, and 1 to a plurality of heteroatoms are contained in the atoms forming the ring.
• pyrrole ring pyridine ring, pyridazine ring, pyrimidine ring, pyrazine ring, pyrazole ring, imidazole ring, triazole ring, tetrazole ring, indole ring, isoindole ring, indazole ring, quinoline ring, isoquinoline ring, cinnoline ring, quinazoline ring, quinoxaline ring, naphthyridine ring, phthalazine ring, carbazole ring, purine ring, furan ring, thiophene ring, benzimidazole ring, imidazopyridine ring, imidazotriazine ring, pyrrolopyridine ring, pyrrolopyrimidine ring, pyridopyrimidine ring, oxazole ring, isoxazole ring, thiazole ring, isothiazole
• 5- to 10- membered heteroaryl group represents a monovalent group derived by removing a hydrogen atom from the aforementioned definition of “5- to 10-membered aromatic heterocycle.”
• aziridine ring is aziridine ring, azetidine ring, pyrrolidine ring, piperidine ring, 4-oxopiperidine ring, homopiperidine ring, piperazine ring, homopiperazine ring, morpholine ring, thiomorpholine ring, 1,1-dioxothiomorpholine ring, pyridone ring, phthalimide ring, succinimide ring or the like, and preferably azetidine ring, pyrrolidine ring, piperidine ring, piperazine ring, morpholine ring and thiomorpholine ring.
• 3- to 10- membered heterocyclic group represents a monovalent group derived by removing a hydrogen atom from the aforementioned definition of “3- to 10-membered heterocycle.”
• the term “leaving group” as described in the specification may be any group commonly known as a leaving group in organic synthesis, with no special restrictions, and as specific examples there may be mentioned a halogen atom such as a chlorine atom, a bromine atom, an iodine atom; a nitro group; an alkylthio group such as a methylthio group, an ethylthio group and a propylthio group; an arylthio group such as a phenylthio group, a toluylthio group and a 2-pyridylthio group; an alkylsulfonyloxy group such as a methanesulfonyloxy group, a trifluoromethanesulfonyloxy group, an ethanesulfonyloxy group, a propanesulfonyloxy; an arylsulfonyloxy group such as a benzenesulfonyloxy
• salt described in the specification, there may be mentioned, for example, a salt with inorganic acid, a salt with organic acid, a salt with inorganic base, a salt with organic base, a salt with acidic or basic amino acid or the like, preferably a pharmacologically acceptable salt.
• a salt is formed in an appropriate ratio of 0.1 to 5 molecules of acid or base to one molecule of the compound.
• a salt with inorganic acid there may be mentioned, for example, a salt with hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, or the like
• a salt with organic acid there may be mentioned, for example, a salt with acetic acid, succinic acid, fumaric acid, maleic acid, tartaric acid, citric acid, lactic acid, stearic acid, benzoic acid, methanesulfonic acid, p-toluenesulfonic acid or the like.
• a salt with inorganic base there may be mentioned, for example, an alkali metal salt such as a sodium salt and a potassium salt, an alkali earth metal salt such as a calcium salt and a magnesium salt, an aluminum salt, an ammonium salt or the like.
• an alkali metal salt such as a sodium salt and a potassium salt
• an alkali earth metal salt such as a calcium salt and a magnesium salt
• an aluminum salt such as calcium salt and a magnesium salt
• an aluminum salt such as calcium salt
• an ammonium salt or the like there may be mentioned, for example, a salt with diethylamine, diethanolamine, meglumine, N,N′-dibenzylethylenediamine or the like.
• a salt with acidic amino acid there may be mentioned, for example, a salt with aspartic acid, glutamic acid or the like, and as preferable examples of a salt with basic amino acid, there may be mentioned, for example, a salt with arginine, lysine, ornithine or the like.
• a “adjuvant” described in the specification there may be mentioned, for example, a excipient, a binder, a disintegrator, a lubricant, a coloring agent, a corrective coating, a stabilizer, a emulsifier, a absorbefacient, a surfactant, a pH adjustor, a preservative, an antioxidant or the like.
• R 101 , R 102 may represent the same definitions as the formula R 12a , R 12b (R 12a and R 12b represent the same definitions as the aforementioned definition), respectively; or R 101 and R 102 form a ring, and the formula —NR 101 R 102 may represent the same definition as the formula (wherein T1 represents the same definition as the aforementioned definition); other symbols represent the same definitions as the aforementioned definitions.
• a reaction solvent N-methylpyrrolidone, N,N-dimethylformamide, dimethyl sulfoxide, 2-ethoxyethanol, chlorobenzene or the like can be used.
• a base or an acid may be added thereto, specifically, an organic base such as diisopropylethylamine, an inorganic base such as potassium carbonate, cesium carbonate and sodium hydride and an acid such as pyridine hydrochloride and hydrochloric acid can be used.
• the reaction can be performed at a temperature ranging from room temperature to reflux temperature for a reaction time ranging from 10 minutes to 30 hours.
• a compound where a halogen atom which is not as a leaving group is bonded on pyrimidine or pyridine ring may be used as a starting material, and the halogen atom can be reduced by the catalytic reduction method or the like after this step.
• a carbamate derivative, an isocyanate derivative, a halogenated carbamoyl derivative or the like can be used.
• chloroform, toluene, N-methylpyrrolidone, N,N-dimethylformamide, dimethyl sulfoxide, chlorobenzene can be used.
• a base may be added thereto, specifically, an organic base such as pyridine, triethylamine and diisopropylethylamine, an inorganic base such as potassium carbonate, cesium carbonate and sodium hydride can be used, for example.
• the reaction can be performed for a time of 10 minutes to 30 hours at a temperature of 0° C. to reflux temperature.
• Carbamate ester derivative is prepared by using phenyl chlorocarbonate or the like as a reagent, for example. After this intermediate is isolated, or not isolated, the intermediate is allowed to react with an amine, thereby a urea derivative can be obtained. Alternatively, by reacting a carbamate derivative or an isocyanate derivative as a reagent, a corresponding urea derivative can be converted into.
• chloroform, toluene, N-methylpyrrolidone, N,N-dimethylformamide, dimethyl sulfoxide, chlorobenzene or the like can be used.
• a base may be added thereto, specifically, an organic base such as pyridine, triethylamine, and diisopropylethylamine, an inorganic base such as potassium carbonate, cesium carbonate and sodium hydride can be used, for example.
• the reaction can be performed for a time of 10 minutes to 30 hours at a temperature of 0° C. to reflux temperature.
• a substituent conversion in R 2 , R 101 , R 102 can be also performed by suitably using an oxidation reaction, a reduction reaction, a reductive amination reaction, an ester formation reaction, an amide formation reaction, a protecting group introduction reaction, a deprotection reaction, a hydrolysis reaction or the like which are generally used before and/or after each process.
• R 2 is a hydrogen atom in the compounds (1a), (1c) and (1d)
• the following methods come under the above-mentioned substituent conversions; that is, a method for converting R 2 into a C 1-6 alkyl group by performing a reductive amination reaction with aldehyde or ketone, a method in which, after a corresponding urea derivative is obtained as in ⁇ Step 1A-3> from the compound (1c) and an amine having ketone or aldehyde, an amine side chain is introduced into R 101 , R 102 by further performing a reductive amination reaction with an amine, or the like.
• sodium cyanoborohydride, sodium trimethoxyborohydride, sodium triacetoxyborohydride or the like can be used as a reducing agent, and methanol, tetrahydrofuran, dichloromethane, dichloroethane or the like can be used as a reaction solvent.
• a method that a benzotriazole derivative is prepared and the derivative is reduced by sodium borohydride as reported in Tetrahedron 47, 2683 (1991), or the like is useful.
• a corresponding urea is formed as in ⁇ Step 1A-3> from the compound (1c) and an amine having an ester.
• an amide derivative can be also obtained by using a condensing agent.
• N,N-dimethylformamide, tetrahydrofuran or the like can be used as a reaction solvent, and 1-ethyl-3-(3-dimethyl-aminopropyl)carbodiimide hydrochloride, (1H-1,2,3-benzotriazole-1-yloxy)(tri(dimethylamino))phosphonium hexafluorophosphate can be used as a condensing agent.
• the reaction can be performed for a time of 10 minutes to 30 hours at a temperature of 0° C. to reflux temperature.
• Hydrogen peroxide, peracetic acid, methaperiodate, 3-chloroperbenzoic acid or the like can be used as an oxidizing agent.
• Methanol, water, dichloromethane, chloroform or the like can be used as a solvent.
• the reaction can be performed for a time of 10 minutes to 30 hours at a temperature of 0° C. to reflux temperature.
• the compound (2b) can be obtained under the same conditions as ⁇ Step 1A-1>.
• a compound (2c) substituted with a halogen atom, a formyl group, an amino group or the like as the 3-position substituent can be obtained by reacting a compound (2b) with halogenation agents such as N-chlorosuccinimide, N-bromosuccinimide or a mixed reagent of phosphorous oxychloride or thionyl chloride with N,N-dimethylformamide, or after converting the compound into a N-chlorosulfonylcarbamoyl derivative by allowing chlorosulfonyl isocyanate to react with the compound, followed by allowing triethylamine to react with the derivative or the like as reported in Tetrahedron 50, 6549 (1994).
• halogenation agents such as N-chlorosuccin
• reaction solvent 2-propanol, N,N-dimethylformamide, tetrahydrofuran, acetonitrile or the like can be used, and the reaction can be performed for a time of 10 minutes to 30 hours at a temperature of 0° C. to reflux temperature.
• ⁇ Step 3-1> is a step for conducting carboxamidation of the 1-position of an indole derivative (3a) to obtain a compound (3b), and can be performed in a similar way as ⁇ Step 1A-2>.
• a methyl group, a benzyl group, a substituted benzyl group, a benzyloxycarbonyl group can be used as a protecting group, for example.
• ⁇ Step 3-2> is a step for obtaining a compound (3c) by deprotecting an indole derivative (3b).
• Y 1 is an oxygen atom
• the methods used for ordinary deprotection such as demethylation by using boron tribromide, debenzylation by using trifluoroacetic acid-thioanisole, debenzylation or the debenzyoxycarbonylation by catalytic reduction can be used.
• Step 3-3> is a step for reduction of an indole derivative (3c) to an indoline derivative (3d).
• Catalytic hydrogenation reaction in the presence of palladium catalyst under ordinary pressure or under pressurization or the like can be applied.
• Methanol, N,N-dimethylformamide, tetrahydrofuran or the like can be used as a reaction solvent, and the reaction can be performed for a time of 10 minutes to 30 hours at a temperature of 0° C. to reflux temperature.
• ⁇ Step 3-4> is a step conducting carboxamidation of the 1-position of a indole derivative (3e) to obtain a compound (3f), and can be performed in the same way as in ⁇ Step 1A-2>.
• ⁇ Step 3-5> is a step for reducing a nitroindole derivative (3f) to an aminoindole derivative (3g).
• the conditions used for reduction reaction of a nitro group to an amino group generally utilized specifically, for example, reduction by iron-ammonium chloride or iron-acetic acid or the like, catalytic reduction by palladium hydroxide-hydrogen or the like can be applied.
• Methanol, ethanol, water, N,N-dimethylformamide, tetrahydrofuran or the like can be used as a reaction solvent, and the reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 30 hours.
• ⁇ Step 3-6> is a step for reducing an indole derivative (3g) to an indoline derivative (3h) and can be performed in the same way as in ⁇ Step 3-3>.
• DDQ 2,3-dichloro-5,6-dicyano-1,4-benzoquinone
• 1,4-dioxane, toluene, benzene or the like can be used as a solvent.
• a method in which manganese acetate (III) is used as an oxidizing agent or the like as reported in Tetrahedron Lett. 29, 2151 (1988) can be applied.
• Y 1 is the formula —NR Y1 - and R Y1 , is a hydrogen atom in compounds (3g), (3h), (3c) or (3d)
• a compound (1d) wherein Y 1 is the formula —NR Y1 — and R Y1 , is a C 1-6 alkyl group
• Y 1 is the formula —NR Y1 — and R Y1 , is a C 1-6 alkyl group
• Y 1 is the formula —NR Y1 — and R Y1 is a hydrogen atom in compounds (3i) or (1d)
• the compounds can be also similarly converted into the compounds (3i) or (1d), wherein Y 1 is the formula —NR Y1 — and R Y1 is a C 1-6 alkyl group.
• sodium cyanoborohydride, sodium trimethoxyborohydride, sodium triacetoxyborohydride or the like can be used as a reducing agent, and methanol, tetrahydrofuran, dichloromethane, dichloroethane or the like can be used as a reaction solvent.
• a method in which a benzotriazole derivative is prepared and is reduced by sodium borohydride as reported in Tetrahedron 47,2683 (1991) or the like can be applied.
• a substituent conversion can be also performed in R 2 , R 9 , R 101 and R 102 by properly performing oxidation reaction, reduction reaction, reductive amination reaction, ester formation reaction, amide formation reaction, protecting group introduction reaction, deprotection reaction, hydrolysis reaction or the like generally utilized after these steps.
• a substituent conversion can be also performed in R 2 , R 9 , R 101 and R 102 by properly performing oxidation reaction, reduction reaction, reductive amination reaction, ester formation reaction, amide formation reaction, protecting group introduction reaction, deprotection reaction, hydrolysis reaction or the like generally utilized after these steps.
• the same method as in ⁇ Step 3-9> can be used.
• R 2 represents the same definition as the aforementioned definition
• an ammonia-ethanol solution or a corresponding primary amine is used, and the reaction can be performed in a sealed tube for a time of 10 minutes to 100 hours at a temperature of 60° C. to reflux temperature.
• L 1 is a substituent having higher reactivity than that of L 2 .
• a combination of L 1 being a nitro group and L 2 being a chlorine atom comes under the category.
• a compound (7a) can be obtained by using a compound (6a) and an aminophenol derivative in the same method as in ⁇ Step 1A-1>.
• a method for reducing a nitro group by catalytic hydrogenation reaction using palladium catalyst or the like, or metal reduction reaction using iron-ammonium chloride, iron-acetic acid or the like can be applied.
• methanol, ethanol, tetrahydrofuran, N,N-dimethylformamide or the like can be used as a reaction solvent, and the catalytic hydrogenation reaction can be performed at ordinary pressure or under pressurization. The reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 30 hours.
• a protecting group for example, a benzyloxycarbonyl group or the like can be introduced by using a corresponding chlorocarbonate ester.
• t-Butyl bromoacetate as a reagent sodium hydride or the like as a base, N,N-dimethylformamide, tetrahydrofuran, dimethyl sulfoxide or the like as a reaction solvent can be used.
• the reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 30 hours.
• deprotection reaction by the catalytic hydrogenation reaction of benzyloxycarbonyl group or the like.
• a reagent an isocyanate derivative, a carbamate derivative or the like can be used.
• a reaction solvent N,N-dimethylformamide, tetrahydrofuran, dimethyl sulfoxide, toluene or the like can be used, and organic bases such as triethylamine or pyridine can be added thereto as requested.
• the reaction can be performed for a time of 10 minutes to 30 hours and at a temperature of 0° C. to reflux temperature.
• the reaction is performed in an acidic condition, specifically, for example, in trifluoroacetic acid-trifluoroacetic anhydride or the like.
• the reaction can be performed for a time of 10 minutes to 30 hours and at a temperature of 0° C. to reflux temperature.
• a 3-hydroxyindoline derivative (7g) is prepared by reduction of a carbonyl group using sodium borohydride as a reagent, in tetrahydrofuran, methanol, ethanol or the like as a reaction solvent, thereafter a compound (7h) can be obtained by performing dehydration by using camphor sulfonic acid or the like as a reagent, and toluene, dichloroethane or the like as a reaction solvent.
• a dimethylacetal compound can be derived by condensing a nitrotoluene derivative and dimethylformamide dimethylacetal in N,N-dimethylformamide at a temperature of room temperature to reflex temperature for 10 minutes to 30 hours, and by sequentially performing the reaction of the compound in methanol under acidic condition at a temperature of room temperature to reflex temperature for 10 minutes to 30 hours.
• Reduction by iron-ammonium chloride, iron-acetic acid or the like can be used.
• As a reaction solvent methanol, ethanol, tetrahydrofuran, N,N-dimethylformamide or the like can be used. The reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 30 hours.
• tetrahydrofuran or N,N-dimethylformamide is used as a reaction solvent, for example, after a carbamate derivative is prepared by using phenyl chlorocarbonate or the like, and urea can be also introduced by allowing the derivative to react with an amine at a temperature of room temperature to reflux temperature for 10 minutes to 30 hours, while N,N-dimethylformamide, dimethyl sulfoxide are used as a reaction solvent.
• the reaction can be performed under the conditions as described in Tetrahedron Lett. 39, 71 (1998). Specifically, there may be mentioned a method in which reflux is performed in solvents such as benzene in the presence of catalytic amounts of camphor sulfonic acid and quinoline.
• the step can be performed in the same way as in ⁇ Step 8A-2>.
• a corresponding condensed compound can be obtained under the same conditions as in ⁇ Step 1A-1>, by using 4-amino-3-iodophenol obtained from t-butyl (2-iodo-4-((triisopropylsilyl)oxy)phenyl)carbamate obtained by a method as described in J. Org. chem., 62, 6507 (1997) by allowing n-butylammonium fluoride or the like to react therewith.
• the condensation can be performed in the presence of tetrakis(triphenylphosphine)palladium or dichlorobis(triphenylphosphine)palladium, cuprous iodide.
• N,N-dimethylformamide or the like can be used as a reaction solvent, and the reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 30 hours.
• N,N-dimethylformamide or the like can be used as a reaction solvent, and the reaction can be performed at a temperature of 80° C. to reflux temperature for 5 minutes to 10 hours.
• a compound (7h) can be converted into a compound (7j) as described in ⁇ Step 7A-9>, ⁇ Step 7A-10>. wherein each symbol represents the same definition as in the aforementioned definition.
• the same conditions as in ⁇ Step 9A-4> can be applied.
• halogenation agents such as iodine, N-bromosuccinimide, bromine, N-iodosuccinimide can be used.
• a reaction solvent for example, N,N-dimethylformamide, dimethyl sulfoxide, methylene chloride and acetonitrile can be used. The reaction can be performed at a temperature of 0° C. to reflux temperature for 10 minutes to 48 hours.
• a reaction solvent for example, N,N-dimethylformamide, dioxane and tetrahydrofuran can be used. The reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 10 hours.
• the reaction can be performed at a temperature of 0° C. to reflux temperature for 10 minutes to 100 hours by using, for example, an ammonia-ethanol solution or the like.
• a method in which, after oxalyl chloride or thionyl chloride is allowed to react with the compound at a temperature of 0° C. to reflux temperature for 10 minutes to 24 hours, ammonia is allowed to react with the compound, or a method in which diethylcyanophosphate, ammonium chloride, triethylamine are employed as disclosed in Synthesis [SYNTBF], 1998, 1467-1475 or the like can be used.
• steps for converting a carbamoyl group of compounds (13d), (13h), (13k) into a cyano group to obtain compounds (13g), (131).
• a method in which phosphorus oxychloride, thionyl chloride, trifluoroacetic anhydride are allowed to react with the compounds at a temperature of 0° C. to reflux temperature for 10 minutes to 24 hours can be used.
• a compound can be obtained from a corresponding compound respectively: a compound (14d) from a compound (14a), a compound (14e) from a compound (14b) and a compound (14f) from a compound (14c) as in ⁇ Step 10-1>.
• steps for obtaining a compound from a corresponding compound respectively: a compound (15a) from a compound (14d), a compound (15b) from a compound (14e) and a compound (15c) from a compound (14f) by substituting a substituent in 6-membered heterocycle from a halogen atom to a cyano group.
• a substituent in 6-membered heterocycle from a halogen atom to a cyano group.
• 0.5 to 2.0 equivalent of zinc cyanide or 1.0 to 3.0 equivalent of copper(I) cyanide, potassium cyanide, sodium cyanide, trimethylsilylcyanide or the like to compounds (14d), (14e) and (14f) can be used.
• a catalyst for example, a palladium catalyst such as tetrakis(triphenylphosphine)palladium or dichlorobis(triphenylphosphine)palladium, copper(I) iodide, copper(O) or the like can be used.
• a reaction solvent for example, N,N-dimethylformamide, N-methylpyrrolidone, dimethyl sulfoxide, dioxane, tetrahydrofuran or the like can be used.
• the reaction can be performed at a temperature of room temperature to reflux temperature for 10 minutes to 2 days.
• purification can be performed by an ordinary treatment method, for example, column chromatography using silica gel or adsorbent resins or the like, or recrystallization from a suitable solvent.
• the compounds of the invention, salts thereof or hydrates of the foregoing may be formulated as tablets, powders, fine particles, granules, coated tablets, capsules, syrups, lozenges, inhalants, suppositories, injections, ointments, eye salves, eye drops, nasal drops, ear drops, paps, lotions and the like, by any common methods.
• the formulation may employ any commonly used excipients, binders, lubricants, coloring agents, corrective coatings, and if necessary, stabilizers, emulsifiers, absorbefacients, surfactants, pH adjustors, preservatives, antioxidants, or the like, in combination with various components that are ordinarily used as raw materials for pharmaceutical formulations.
• an oral formulation may be prepared by combining a compound of the invention or pharmacologically acceptable salt thereof with an excipient, if necessary adding a binder, disintegrator, lubricant, coloring agent, corrective coating or the like, and forming a powder, fine particles, granules, tablets, coated tablets, capsules, etc. by a common method.
• animal and vegetable oils such as soybean oil, beef tallow and synthetic glycerides
• hydrocarbons such as liquid paraffin, squalane and solid paraffin
• ester oils such as octyldodecyl myristate and isopropyl myristate
• higher alcohols such as cetostearyl alcohol and behenyl alcohol
• silicone resins such as cetostearyl alcohol and behenyl alcohol
• silicone resins such as polyoxyethylene fatty acid esters, sorbitan fatty acid esters, glycerin fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil and polyoxyethylene-polyoxypropylene block copolymer
• water-soluble polymers such as hydroxyethylcellulose, polyacrylic acid, carboxyvinyl polymer, polyethylene glycol, polyvinylpyrrolidone and methylcellulose
• lower alcohols such as ethanol and isopropanol
• excipients which may be used include lactose, corn starch, white soft sugar, glucose, mannitol, sorbit, crystalline cellulose and silicon dioxide
• examples of binders which may be used include polyvinyl alcohol, polyvinyl ether, methylcellulose, ethylcellulose, gum arabic, tragacanth, gelatin, shellac, hydroxypropylmethylcellulose, hydroxypropylcellulose, polyvinylpyrrolidone, polypropylene glycol/polyoxyethylene block polymer and meglumine
• examples of disintegrators which may be used include starch, agar, gelatin powder, crystalline cellulose, calcium carbonate, sodium bicarbonate, calcium citrate, dextrin, pectin and carboxymethylcellulose calcium
• examples of lubricants which may be used include magnesium stearate, talc, polyethylene glycol, silica and hydrogenated vegetable oils
• examples of coloring agents which may be used include those approved for addition to drugs, and examples of corrective coatings
• the tablets or granules may also be sugar coated or provided with another type of suitable coating if necessary.
• a common method may be used to formulate a compound of the invention or a pharmacologically acceptable salt thereof with a pH adjustor, solubilizer, isotonizing agent or the like, as well as a solubilizing aid, stabilizer etc. if necessary.
• a solubilizing aid such as sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate
• raw materials such as animal and vegetable oils, mineral oils, ester oils, waxes, higher alcohols, fatty acids, silicone oils, surfactants, phospholipids, alcohols, polyhydric alcohols, water-soluble polymers, clay minerals, purified water and the like, and if necessary pH adjustors, antioxidants, chelating agents, antiseptics and fungicides, coloring agents, aromas and the like may also be added, although the base materials for external agents according to the invention are not limited to these.
• ingredients having differentiation-inducing activity may also be included components such as ingredients having differentiation-inducing activity, circulation promoters, microbicides, antiphlogistic agents, cell activators, vitamins, amino acids, humectants, keratolytic agents and the like.
• the amounts of the aforementioned base materials may be the concentrations established for preparation of ordinary external agents.
• the compound of the invention the salt thereof or the hydrate thereof when administered, and either oral or parenteral administration may be carried out according to ordinary methods.
• it may be prepared and administered in the form of a tablet, powder, a granule, a capsule, syrup, lozenge, inhalant, suppository, injection, ointment, eye salve, eye drop, nasal drop, ear drop, pap, lotion or the like.
• the dosage of a drug according to the invention will differ depending on severity of symptoms, age, gender, body weight, form of administration, type of disease, etc., it will be generally 100 ⁇ g-10 g per day for an adult and such dosages may be administered once or divided over several.
• the administration form of the medicine according to the present invention is not particularly restricted, and can be an oral administration or a parenteral administration by a generally employed method.
• biochemical activity and actions and effects as a medicine of the compounds according to the present invention can be evaluated by the following methods.
• VECs Human Umbilical Vein Endothelial Cells
• This assay is used to determine inhibition of a test substance on tyrosine kinase activity.
• DNA coding for the cytoplasmic domain of VEGFR2 is obtained by total cDNA synthesis (Edwards M, International Biotechnology Lab 5(3), 19-25, 1987) or by cloning. Expression in an appropriate expression system can produce a polypeptide with tyrosine kinase activity.
• the cytoplasmic domain of VEGFR2 obtained by expression of recombinant protein in, for example, insect cells have been found to exhibit intrinsic tyrosine kinase activity.
• VEGFR2 GenBank Accession No. L04947
• cytoplasmic fragment starting from lysine 398 (FGFR1, GenBank Accession No. X52833), the cytoplasmic fragment starting from lysine 558 (PDGFR ⁇ , GenBank Accession No. M21616) or the cytoplasmic fragment starting from lysine 974 (HGFR, GenBank Accession No. J02958) may be cloned and expressed by the same method for use in assays for other tyrosine kinases.
• EGFR was purchased from Sigma Co. (Product No. E-2645).
• VEGFR2 tyrosine kinase For expression of the VEGFR2 tyrosine kinase, Sf9 cells were infected with the VEGFR2 recombinant virus and collected after 48 hours. The collected cells were rinsed with ice-cooled phosphate buffered saline (PBS) and then resuspended using 20 ml of ice-cooled Lysis Buffer (50 mM Tris-HCl (pH 8.5), 5 mM 2-mercaptoethanol, 100 mM KCl, 1 mM phenylmethylsulfonyl fluoride, 1% (v/v) NP-40) per 1.5 ⁇ 10 8 cells. The suspension was centrifuged at 12,000 rpm for 30 minutes at 4° C.
• PBS ice-cooled phosphate buffered saline
• Lysis Buffer 50 mM Tris-HCl (pH 8.5), 5 mM 2-mercaptoethanol, 100 mM
• the supernatant was added to a Ni-NTA agarose column (3 ml, purchased from Qiagen) equilibrated with Buffer A ⁇ 20 mM Tris-HCl (pH 8.5), 5 mM 2-mercaptoethanol, 500 mM KCl, 20 mM imidazole, 10% (v/v) glycerol ⁇ .
• Buffer A ⁇ 20 mM Tris-HCl (pH 8.5), 5 mM 2-mercaptoethanol, 500 mM KCl, 20 mM imidazole, 10% (v/v) glycerol ⁇ .
• Buffer A was washed with 30 ml of Buffer A, and then with 6 ml of Buffer B ⁇ 20 mM Tris-HCl (pH 8.5), 5 mM 2-mercaptoethanol, 1M KCl, 10% (v/v) glycerol ⁇ , and finally with 6 ml of Buffer A.
• the tyrosine kinase reaction was conducted as follows. In the case of VEGFR2, for example, 10 ⁇ l of a kinase reaction solution ⁇ 200 mM Hepes (pH 7.4), 80 mM MgCl 2 , 16 mM MnCl 2 , 2 mM Na 3 VO 4 ⁇ , 250 ng of biotin-bound poly(Glu4:Tyr1) (biotin-poly(GT), purchased from CIS Diagnostics Co.) (6 ⁇ l of a 15-fold dilution with distilled water), 15 ng of His6-VEGFR2 (10 ⁇ l of a 240-fold dilution with 0.4% BSA solution) and the test substance dissolved in dimethyl sulfoxide (4 ⁇ l of a 100-fold dilution with 0.1% BSA solution) were added into each well of a 96-well round-bottom plate (NUNC Co., Product No.
• the tyrosine phosphorylated biotin-poly(GT) was measured by the Homogenous Time-Resolved Fluorescence (HTRF) method (Analytical Biochemistry, 269, 94-104, 1999). Specifically, the kinase reaction solution was transferred to a 96-well black half-plate (Product No.
• the tyrosine phosphorylation rate for the biotin-poly(GT) was expressed as the delta F % value as described in the HTRF Standard Experiment Methods text by CIS Diagnostics Co.
• the delta F % value in the presence of the test substance was determined as a ratio (%) with the delta F % value with addition of His6-VEGFR2 in the absence of the test substance defined as 100% and the delta F % value in the absence of both the test substance and His6-VEGFR2 defined as 0%. This ratio (%) was used to calculate the test substance concentration required for 50% inhibition of VEGFR2 kinase activity (IC 50 )
• Measurement of inhibition against FGFR1, EGFR and HGFR kinase activity was conducted using 15 ng of His6-FGFR1, 23 ng of EGFR and 30 ng of His6-HGFR, respectively, according to the tyrosine kinase reaction and HTRF method described above.
• Measurement of inhibition against PDGFR ⁇ kinase activity was conducted using 50 ng of His6-PDGFR ⁇ according to the tyrosine kinase reaction described above, followed by detection of tyrosine phosphorylated biotin-poly(GT) by the following method. Specifically, the kinase reaction solution was added to a 96-well streptavidin-coated plate (Product No.
• TMB Membrane Peroxidase Substrate (Product No. 50-5077-03, Funakoshi Co., Ltd.) was added to initiate the reaction. After stationing at room temperature for 10 minutes, 100 ⁇ l of 1 M phosphoric acid was added to suspend the reaction, and the absorbance at 450 nm was measured with a microplate reader (BIO KINETICS READER EL304, Bio-Tek Instruments).
• the absorbance ratio in the presence of the test substance was determined with respect to 100% as the absorbance with addition of His6-PDGFR ⁇ and no test substance, and 0% as the absorbance without addition of both the test substance and His6-PDGFR ⁇ . This absorbance ratio was used to calculate the test substance concentration required for 50% inhibition of PDGFR ⁇ kinase activity (IC 50 ). The results are shown in Table 2. TABLE 2 VEGFR2 FGFR1 Example kinase kinase No.
• VEGF Vascular Endothelial Growth Factor
• PCR was conducted using a human placenta cDNA library (Toyobo Co., Ltd.) as the template and the SEQ ID NO:1 (5′CCGGATCCATGAACTTTCTGCTG3′) and SEQ ID NO:2 (5′GTGAATTCTGTATCGATCGTT3′) of VEGF as primers. After completion of the PCR reaction, the 5′ ends were phosphorylated and an approximately 600 bp DNA band was separated by 1.2% agarose gel electrophoresis. After polymerization by self-ligation, the cDNA was cut with EcoRI and BamHI and inserted into the EcoRI and BamHI sites of vector pUC19. This was used to transform E.
• coli JM83 and plasmids were recovered from the transformed clones.
• a VEGF cDNA fragment was cut out of the plasmids with HindIII and EcoRI and then inserted into pIRES2-rsGFP vector to yield pIRES2-rsGFP/VEGF for protein expression.
• the KP-1/VEGF cells were prepared to 5 ⁇ 10 5 cells/ml, and 0.5 ml thereof was dispensed into each well of a 24-well plate and cultured at 37° C. for 24 hours. The culture supernatants were collected and the VEGF levels thereof measured using a VEGF measuring kit (IBL Co., Ltd.) for confirmation of high expression.
• a VEGF measuring kit IBL Co., Ltd.
• Millipore rings (Nihon Millipore) were sealed with 0.45 ⁇ m Durapore filter membranes (Nihon Millipore) to create chambers.
• KP-1/VEGF human pancreatic cancer cells (3 ⁇ 10 6 ) suspended in 0.17 ml of collagen gel were injected into each chamber through the injection port, and the chambers were sealed. Approximately 10 ml of air was then injected in the dorsal skin of 6-week-old C57BL/6N female mice under anesthesia to produce pouches, and the prepared chambers were transplanted therein. About 6 hours after completing transplantation, a test substance suspended in 0.5% methyl cellulose was orally administered (0.1 ml/10 g body weight), and this was continued once a day for the next 4 days.
• 0.2 ml of 51 Cr (Amersham Pharmacia)-labeled mouse erythrocytes (2.5 ⁇ 10 6 cpm/ml) were injected through the caudal veins of each of the mice with the transplanted chambers.
• 51 Cr Amersham Pharmacia
• the skin in contact with the chamber was excised and frozen, the section in direct contact with the chamber was precisely cut off, and the radioactivity was measured with a Y-counter.
• the blood volume was calculated from the radioactivity and used as an index of the in vivo angiogenesis-inducing activity.
• the angiogenesis volume was recorded as this measured blood volume minus the blood volume obtained with transplantation of a chamber containing only collagen gel.
• VEGF high-expressing pancreatic cancer cells suspended in PBS at a concentration of 1 ⁇ 10 7 cells/ml were transplanted under the right flank skin of 6-week-old female Balb/c (nu/nu) mice in a volume of 0.1 ml.
• the test substance was orally administered twice a day over a period of 2 weeks with a schedule of 5 days per week.
• the test substance was suspended in 0.5% methyl cellulose for an administered volume of 0.1 ml/10 g body weight.
• the tumor size was measured twice a week using a micrometer caliper.
• the tumor volume was determined by measuring the long and short diameters of the tumor with a micrometer caliper, and calculating 1 ⁇ 2 ⁇ (long diameter ⁇ short diameter ⁇ short diameter). The experiment was conducted using 10 mice in the control (solvent-administered) group and 5 mice in each test substance-administered group. The proportions (%) of the tumor volume after administering a test substance to that of control are shown in Table 4. TABLE 4 Dose (mg/kg/day) Example No. 6 20 60 200 46 77.7% 59.3% 60.0% 36.2% 47 80.5% 64.6% 45.3% 33.6% 53 73.1% 60.4% 48.4% 37.9%
• the experiment was performed according to the method as already reported in the method (Lab. Invest., 67(4), 519-528, 1992). Specifically, 10 ⁇ g/ml of recombinant FGF-2 (purchased from Invitrogen Corporation) dissolved in PBS was added to Matrigel Matrix (purchased from BD Biosciences) to prepare 1 ⁇ g/ml. After that, a 300 ⁇ l of this mixture of Matrigel Matrix and Recombinant FGF-2 was injected into a subcutaneous tissue on the median line of the abdomen of a 6-week-old Balb/c (nu/nu) mouse.
• test substance suspended in a 0.5% methyl cellulose or the like had been orally administered in succession once a day or twice a day for 7 days.
• the implanted Matrigel was taken out, 300 ⁇ l of water was added thereto, and cut into pieces with scissors. The resultant substance was allowed to stand at a cool dark place overnight. After hemoglobin in Matrigel was fully extracted, 100 ⁇ l of the supernatant obtained by centrifugation and 100 ⁇ l of Drabkin's solution (purchased from Sigma Chemical Co., Ltd) were allowed to react at room temperature at a dark place for 1 hour. After that, the absorbance of the reaction solution was measured with wavelength of 550 nm and reference wavelength of 660 nm. The hemoglobin quantity (g/ml) in Matrigel was calculated from the calibration curve established by use of hemoglobin as a standard.
• the experiment was conducted using 8 mice in the control (solvent-administered) group and 6 mice in each compound-administered group.
• the compounds according to the present invention can be prepared by the methods as described in the following examples, for example. These are, however, exemplary, and the compounds according to the present invention are not limited to the specific examples mentioned below in any cases.
• the starting materials were synthesized by the following methods.
• Phenyl (6-(1-methylcarbamoyl-1H-indol-5-yloxy)pyrimidin-4-yl)carbamate (161 mg, 0.400 mmol) was dissolved in N,N-dimethylformamide (1.0 ml), and 3-(diethylamino)propylamine (130 mg, 1.00 mmol) was added while the reaction mixture was stirred at room temperature. After the reaction mixture was stirred overnight, the reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with water and brine, and dried over anhydrous sodium sulfate.
• the starting materials were synthesized by the following methods.
• Methylamine hydrochloride (16.9 g, 250 mmol) was dissolved in N,N-dimethylformamide (250 ml), pyridine (44 ml, 275 mmol) was added thereto, and the reaction mixture was stirred. The reaction mixture was cooled with ice, phenyl chloroformate (35 ml, 275 mmol) was added dropwise thereto, and the reaction mixture was then stirred at room temperature for 24 hours. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure.
• Example 2 the title compound (100 mg, 0.231 mmol, 58%) was obtained as white powder from phenyl (6-(1-methylcarbamoyl-1H-indol-5-yloxy)pyrimidin-4-yl)carbamate (161 mg, 0.400 mmol) and 4-hydroxypiperidine.
• Example 2 the title compound (141 mg, 0.304 mmol, 76%) was obtained as white crystals from phenyl (6-(1-methylcarbamoyl-1H-indol-5-yloxy)pyrimidin-4-yl)carbamate (161 mg, 0.400 mmol) and 4-(1-pyrrolidynyl)piperidine.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate 104 mg, 0.200 mmol
• triethylamine 1 ml
• (2R)-2-amino-3-phenylpropionamide hydrochloride 201 mg, 1.00 mmol
• the reaction mixture was partitioned between ethyl acetate and the saturated aqueous solution of ammonium chloride.
• N1-Methyl-5-(2-amino-pyridyl)oxy-1H-1-indolecarboxamide (2.0 g, 7.1 mmol) was suspended in tetrahydrofuran (140 ml) and N,N-dimethylformamide (1.4 ml) at room temperature, and triethylamine (2.2 ml, 16 mmol) was added while stirred.
• the reaction mixture was cooled with an ice, and phenyl chloroformate (1.8 ml, 15 mmol) was added, and the reaction mixture was stirred at room temperature for 1.5 hours. Phenyl chloroformate (0.5 ml) was further added, and the reaction mixture was stirred at room temperature for 0.5 hours.
• N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide described in Production example 5-1 can be also synthesized as follows.
• N1-Methyl-5-((2-amino-4-pyridyl)oxy-1H-1-indolcarboxamide (100 mg, 0.354 mmol) synthesized in Production example 5-1 and triethylamine (0.3 ml)-were dissolved in N,N-dimethylformamide (3 ml). Phenyl chlorocarbonate (0.0888 ml, 0.708 mmol) was added dropwise thereto at room temperature and the reaction mixture was stirred for 30 minutes. (2S)-2-Amino-3-phenylpropionamide (290 mg, 1.77 mmol) was added and the reaction mixture was stirred for 3 days.
• the reaction mixture was partitioned between a solvent mixture of ethyl acetate-tetrahydrofuran and water.
• the organic layer was washed with water and brine, dried over anhydrous magnesium sulfate.
• the crystals were precipitated from a solvent mixture of ethyl acetate-hexane, filtered off, and dried under aeration to yield the title compound (69.4 mg, 0.147 mmol, 41%) as white crystals.
• tert-Butoxycarbonylaminoacetic acid (876 mg, 5.00 mmol) and N-methylmorpholine (506 mg, 5.00 mmol) were dissolved in tetrahydrofuran (20 ml).
• isobutyl chloroformate (683 mg, 5.00 mmol) was added dropwise at below ⁇ 15° C. and the reaction mixture was stirred for 30 minutes, pyrrolidine (782 mg, 11.0 mmol) was added at below ⁇ 15° C. and the reaction mixture was further stirred at 0° C. for 30 minutes.
• the reaction mixture was partitioned between ethyl acetate and 1N aqueous solution of sodium hydroxide.
• the organic layer was washed with 1N hydrochloric acid, a saturated aqueous solution of sodium hydrogencarbonate and brine, and was dried over anhydrous magnesium sulfate.
• the solvent was distilled off, and the obtained residue was dissolved in a solvent mixture of ethyl acetate (10 ml)-tetrahydrofuran (5 ml). 4N hydrochloric acid Ethyl acetate solution (5 ml) was added and the reaction mixture was stirred at room temperature for 18 hours.
• the product was solidified with diethyl ether, suspended, filtered off, washed with diethyl ether, and dried under aeration to yield the title compound (137 mg, 0.285 mmol, 75.4%) as a colorless amorphous solid.
• the starting materials were synthesized as follows.
• Methyl aminoacetate hydrochloride (300 mg, 2.3 mmol) was dissolved in N,N-dimethylformamide (4 ml), and then triethylamine (1 ml) was added.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (250 mg, 0.48 mmol) synthesized in Production example 5-2 was added thereto. The reaction mixture was stirred at room temperature for 22 hours. After water was added to the reaction mixture, extraction was performed with a solvent mixture of ethyl acetate-tetrahydrofuran.
• Benzyl (4-oxopiperidin-1-yl)carboxylate (4.7 g, 20 mmol) was dissolved in tetrahydrofuran (200 ml); methyllithium-diethylether solution (9.0 ml (1.02 M)+11.6 ml (1.14 M), total 22 mmol) was added dropwise thereto (internal temperature: ⁇ 60° C. or below) while stirred at ⁇ 78° C. under nitrogen atmosphere; and then the reaction mixture was stirred for 1.5 hours as it stands.
• a similar reaction was performed by using piperidin-4-one-1-carboxylate (1.1 g, 5.0 mmol) in another container.
• Example 9 the title compound (59.5 mg, 0.135 mmol, 38%) was obtained as white crystals from N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (100 mg, 0.354 mmol) synthesized in Production example 5-1 and (2S)-2-amino-4-methylpentanamide hydrochloride (295 mg, 1.77 mmol).
• Example 5 the title compound (52.8 mg, 0.138 mmol, 69%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (104 mg, 0.200 mmol) synthesized in Production example 5-2 and glycinamide hydrochloride (111 mg, 1.00 mmol).
• Example 5 the title compound (50.7 mg, 0.120 mmol, 60%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (104 mg, 0.200 mmol) synthesized in Production example 5-2 and 2-amino-N-cyclopropylacetamide hydrochloride (151 mg, 1.00 mmol) obtained from tert-butoxycarbonylaminoacetic acid and cyclopropylamine by the method similar to Example 7.
• Example 9 the title compound (52.1 mg, 0.126 mmol, 36%) was obtained as white crystals from N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (100 mg, 0.354 mmol) synthesized in Production example 5-1 and (2S)-2-amino-3-hydroxypropionamide hydrochloride (249 mg, 1.77 mmol).
• Example 9 the title compound (56.0 mg, 0.136 mmol, 68%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (104 mg, 0.200 mmol) synthesized in Production example 5-2 and (2R)-2-amino-3-hydroxypropioamide hydrochloride (167 mg, 1.00 mmol) obtained from (2R)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and aqueous ammonia by the method similar to Example 7.
• Example 6 the title compound (82.5 mg, 0.189 mmol, 51%) was obtained as white powder from N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (100 mg, 0.354 mmol) synthesized in Production example 5-1 and (2S)-2-amino-1,5-pentanedicarboxylic acid diamide hydrochloride (321 mg, 1.77 mmol).
• Example 6 the title compound (65.7 mg, 0.150 mmol, 42%) was obtained as white crystals from N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (100 mg, 0.354 mmol) synthesized in Production example 5-1 and (2S)-2-aminosuccinamide hydrochloride (297 mg, 1.77 mmol).
• Example 5 the title compound (72.0 mg, 0.159 mmol, 80%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (104 mg, 0.200 mmol) synthesized in Production example 5-2 and (2S)-2-amino-N-cyclopropyl-3-hydroxypropionamide hydrochloride (181 mg, 1.00 mmol) obtained from (2S)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and cyclopropylamine by the method similar to Example 7.
• Example 5 the title compound (67.6 mg, 0.145 mmol, 73%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (104 mg, 0.200 mmol) synthesized in Production example 5-2 and (2S)-2-amino-3-hydroxy-1-(pyrrolidin-1-yl)propan-1-one hydrochloride (165 mg, 0.848 mmol) obtained from (2S)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and pyrrolidine by the method similar to Example 7.
• Example 5 the title compound (305 mg, 0.654 mmol, 93%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (366 mg, 0.700 mmol) synthesized in Production example 5-2 and (2R)-2-amino-3-hydroxy-1-(pyrrolidin-1-yl)propan-1-one hydrochloride obtained from (2R)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and pyrrolidine by the method similar to Example 7.
• Example 5 the title compound (124 mg, 0.258 mmol, 86%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (157 mg, 0.300 mmol) synthesized in Production example 5-2 and (2S)-2-amino-3-hydroxy-1-(piperidin-1-yl)propan-1-one hydrochloride (312 mg, 1.50 mmol) obtained from (2S)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and piperidine by the method similar to Example 7.
• the organic layer was washed with 1N hydrochloric acid, 1N aqueous solution of sodium hydroxide, a saturated aqueous solution of sodium hydrogencarbonate, and brine, and dried over anhydrous magnesium sulfate.
• the solvent was distilled off, and the obtained residue was dissolved in a solvent mixture of methanol (15 ml)-tetrahydrofuran (15 ml). Then, 10% palladium on carbon (wet) (300 mg) was added, and the reaction mixture was stirred at room temperature under the stream of hydrogen for 90 minutes.
• Example 5 the title compound (107 mg, 0.223 mmol, 74%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (157 mg, 0.300 mmol) synthesized in Production example 5-2 and previously obtained (2R)-2-amino-3-hydroxy-1-(piperidin-1-yl)propan-1-one (228 mg, 1.32 mmol).
• Example 5 the title compound (118 mg, 0.238 mmol, 69%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (179 mg, 0.343 mmol) synthesized in Production example 5-2 and (2S)-2-amino-3-hydroxy-1-(4-hydroxypiperidin-1-yl)propan-1-one hydrochloride (385 mg, 1.71 mmol) obtained from (2S)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and 4-hydroxypiperidine by the method similar to Example 7.
• Example 5 the title compound (121 mg, 0.251 mmol, 84%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (157 mg, 0.300 mmol) synthesized in Production example 5-2 and (2S)-2-amino-3-hydroxy-1-(morpholin-4-yl)propan-1-one hydrochloride (316 mg, 1.50 mmol) obtained from (2S)-2-(tert-butoxycarbonylamino)-3-hydroxypropionic acid and morpholine by the method similar to Example 7.
• Example 5 the title compound (117 mg, 0.268 mmol, 89%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (157 mg, 0.300 mmol) synthesized in Production example 5-2 and 3-amino-N-cyclopropylpropionamide hydrochloride (247 mg, 1.50 mmol) obtained from 3-(tert-butoxycarbonylamino)propionic acid and cyclopropylamine by the method similar to Example 7.
• Example 5 the title compound (122 mg, 0.270 mmol, 90%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (157 mg, 0.300 mmol) synthesized in Production example 5-2 and 3-amino-1-(pyrrolidin-1-yl)propan-1-one hydrochloride (268 mg, 1.50 mmol) obtained from 3-(tert-butoxycarbonylamino)propionic acid and pyrrolidine by the same method similar to Example 7.
• the title compound (177 mg, 0.358 mmol, 71.1%) was obtained as colorless crystals by performing the reaction similar to Example 8 using 3-(3-(4-(1-methylcarbamoyl-1H-indol-5-yloxy)pyridin-2-yl)ureido)propionic acid (200 mg, 0.503 mmol) and 4-hydroxy-4-methylpiperidine monohydrochloride (114 mg, 0.755 mmol, Production example 8-3).
• the starting material was synthesized by the following methods.
• Phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (100 mg, 0.24 mmol) was dissolved in N,N-dimethylformamide (1.0 ml), and 2-ethoxyethylamine (0.063 ml, 0.6 mmol) was added while stirred at room temperature. After 1 hour, the reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with water and brine, and dried over anhydrous sodium sulfate.
• the starting materials were synthesized by the following methods.
• N1-ethyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (3.168 g, 10.69 mmol) synthesized in Production example 27-1 was dissolved in N,N-dimethylformamide (30 ml) under nitrogen atmosphere. Pyridine (1.25 ml, 15.40 mmol) and phenyl chlorocarbonate (1.61 ml, 12.83 mmol) were sequentially added dropwise while cooled with an ice water bath. The reaction mixture was heated to room temperature while stirred. After 1 hour, the reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was distilled off, and the crystals were precipitated from ethyl acetate, filtered off, and dried under aeration to yield the title compound (1.530 g, 3.67 mmol, 34.4%) as white crystals.
• N1-Methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (150 mg, 0.53 mmol) synthesized in Production example 5-1 was dissolved in tetrahydrofuran (3 ml). Triethylamine (0.37 ml, 2.66 mmol) and phenyl chlorocarbonate (0.15 ml, 1.2 mmol) were sequentially added dropwise at room temperature, and the reaction mixture was stirred for 30 minutes. 1-(2-Hydroxy-2-methylpropionyl)piperazine (412 mg, 2.39 mmol) and N,N-dimethylformamide (3 ml) were added and the reaction mixture was stirred for 3 days.
• the reaction mixture was partitioned between ethyl acetate and water.
• the organic layer was washed with water and brine, and dried over anhydrous sodium sulfate.
• the crystals were precipitated from diethyl ether-hexane (1:2), filtered off, and dried under aeration to yield the title compound (189.4 mg, 0.39 mmol, 74.2%) as white crystals.
• Benzyl piperazine-1-carbamate (2.203 g, 10.0 mmol) was dissolved in tetrahydrofuran (50 ml); 2-hydroxy-2-methylpropionic acid (1.25 g, 12.0 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (2.30 g, 12.0 mmol), 1-hydroxy-1H-benzotriazole monohydrate (1.84 g, 12.0 mmol) and triethylamine (3.35 ml, 24.0 mmol) were added; and the reaction mixture was stirred at room temperature for 7 hours. The reaction mixture was partitioned between ethyl acetate and 1N hydrochloric acid.
• Benzyl 4-(2-hydroxy-2-methylpropionyl)piperazine-1-carbamate (2.82 g, 9.20 mmol) synthesized in Production example 28-1 was dissolved in methanol (100 ml) under nitrogen atmosphere; 10% palladium on carbon (50% wet, 1.96 g) was added thereto, the reaction system was purged with hydrogen at atmospheric pressure; and the reaction mixture was stirred overnight. After the reaction system was purged with nitrogen, the catalyst was filtered out, and washed with methanol, then the solvent, together with the filtrate and the washing solution, was distilled off. The residue was dried under reduced pressure to yield the title compound (1.58 g, 9.20 mmol, quantitative) as a colorless oil.
• Example 27 the title compound (96.4 mg, 0.22 mmol, 73.3%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (121 mg, 0.30 mmol) and 3-(diethylamino)propylamine.
• the starting material was synthesized as follows.
• N1-Methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (2.163 g, 7.66 mmol) synthesized in Production example 5-1 was dissolved in N,N-dimethylformamide (50 ml) under nitrogen atmosphere; pyridine (0.93 ml, 11.5 mmol), triethylamine (2.4 ml, 17.24 mmol) and phenyl chlorocarbonate (1.44 ml, 11.5 mmol) were sequentially added dropwise while cooled with an ice water bath; and the reaction mixture was heated to room temperature while stirred. After 1 hour, the reaction mixture was partitioned between ethyl acetate and water.
• Example 27 the title compound (51.3 mg, 0.11 mmol, 29.5%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.37 mmol, Production example 29-1) and 1-(3-aminopropyl)-4-hydroxypiperidine.
• Example 27 the title compound (133.2 mg, 0.29 mmol, 76.8%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.37 mmol, Production example 29-1) and 1-(3-aminopropyl)-4-methylpiperazine.
• the title compound (113 mg, 0.24 mmol, 77%) was obtained as colorless crystals by performing the reaction similar to Example 8 using 4-((4-(1-methylcarbamoyl-1H-indol-5-yloxy)pyridin-2-yl)aminocarbonylamino)butyric acid (130 mg, 0.31 mmol) and pyrrolidine (0.053 ml, 0.63 mmol).
• the starting material was synthesized by the following methods.
• the title compound (166 mg, 0.37 mmol, 76%) was obtained as colorless crystals by performing the reaction similar to Example 8 using 4-((4-(1-methylcarbamoyl-1H-indol-5-yloxy)pyridin-2-yl)aminocarbonylamino)butyric acid (200 mg, 0.49 mmol, Production example 32-1) and cyclopropylamine (0.028 ml, 0.58 mmol).
• the title compound (195 mg, 0.383 mmol, 78.9%) was obtained as colorless crystals by performing the reaction similar to Example 8 using 4-((4-(1-methylcarbamoyl-1H-indol-5-yloxy)pyridin-2-yl)aminocarbonylamino)butyric acid (200 mg, 0.486 mmol, Production example 32-1) and 4-hydroxy-4-methylpiperidine monohydrochloride (110 mg, 0.729 mmol).
• the title compound (94 mg, 0.20 mmol, 64%) was obtained as colorless crystals by performing the reaction similar to Example 8 using 4-((4-(1-methylcarbamoyl-1H-indol-5-yloxy)pyridin-2-yl)aminocarbonylamino)butyric acid (130 mg, 0.31 mmol, Production example 32-1) and diethylamine (0.066 ml, 0.63 mmol).
• the title compound (107 mg, 0.25 mmol, 69%) was obtained as colorless crystals by performing the reaction similar to Example 8 using 4-((4-(1-methylcarbamoyl-1H-indol-5-yloxy)pyridin-2-yl)aminocarbonylamino)butyric acid (150 mg, 0.36 mmol, Production example 32-1) and methylamine hydrochloride (49 mg, 0.73 mmol).
• Example 5 the title compound (265 mg, 0.70 mmol, 69%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl) carbamate (532 mg, 1.02 mmol) synthesized in Production example 5-2 and pyrrolidine (0.42 ml, 5.0 mmol).
• Example 5 the title compound (265 mg, 0.674 mmol, 76%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (463 mg, 0.885 mmol) synthesized in Production example 5-2 and piperidine (0.44 ml, 4.4 mmol).
• Example 27 the title compound (86.7 mg, 0.21 mmol, 21.2%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (402 mg, 1.0 mmol) synthesized in Production example 29-1 and 4-hydroxypiperidine.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (440 mg, 0.841 mmol) synthesized in Production example 5-2 was dissolved in N,N-dimethylformamide (5 ml); triethylamine (0.543 ml, 3.90 mmol) and 4-piperidone hydrochloride monohydrate (0.530 g, 3.93 mmol) were added thereto; and the reaction mixture was stirred for 2 hours. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was concentrated to yield the title compound (0.202 g, 0.496 mmol, 59%) as a colorless amorphous solid.
• Example 28 the title compound (71.1 mg, 0.16 mmol, 29.7%) was obtained as white crystals from N1-ethyl-5-((2-amino-4-pyridyl)oxy)-1H-1-indolecarboxamide (150 mg, 0.53 mmol) synthesized in Production example 5-1 and 4-(1-hydroxy-1-methylethyl)piperidine (342 mg, 2.39 mmol).
• Benzyl 4-ethoxycarbonylpiperidine-1-carboxylate (2.315 g, 7.95 mmol) synthesized in Production example 42-1 was dissolved in tetrahydrofuran (25 ml) under nitrogen atmosphere; methyl magnesium bromide (0.93 M) in tetrahydrofuran (32.5 ml, 30.2 mmol) was added dropwise while cooled with an ice water bath; and the reaction mixture was stirred at room temperature overnight. The reaction mixture was partitioned between ethyl acetate and the saturated aqueous solution of ammonium chloride. The organic layer was washed with brine and dried over anhydrous sodium sulfate.
• reaction mixture was partitioned between ethyl acetate and water.
• organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure.
• the residue was purified by silica gel column chromatography (Fuji Silysia NH silica gel, hexane-ethyl acetate-methanol system).
• the starting materials were synthesized as follows.
• tert-Butyl 4-(3-ethoxycarbonylpropyl)piperidine-1-carboxylate (1.2 g, 4.0 mmol, Production example 43-1) was dissolved in trifluoroacetic acid (30 ml), and the reaction mixture was stirred at room temperature for 20 minutes. This was concentrated under reduced pressure, and was further azeotropically distilled with toluene. The obtained residue was partitioned between ethyl acetate and a saturated aqueous solution of sodium hydrogencarbonate. The organic layer was dried over anhydrous magnesium sulfate.
• the reaction mixture was partitioned between ethyl acetate and water; the organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure; and the residue was purified by silica gel column chromatography (Fuji Silysia NH, ethyl acetate-methanol system).
• the obtained amorphous solid was crystallized by adding diethyl ether. After addition of a small amount of ethanol to make a suspension, this was diluted with hexane. After separation by filtration to obtain crystals, these were rinsed with diethyl ether and dried under aeration.
• the title compound was obtained as colorless crystals (157 mg, 0.328 mmol, 81.7%).
• the starting materials were synthesized as follows.
• tert-Butyl 4-(3-carbamoylpropyl)piperidine-1-carboxylate (0.38 g, 1.4 mmol, Production example 44-1) was dissolved in trifluoroacetic acid (2 ml) and the reaction mixture was stirred at room temperature for 20 minutes. The reaction mixture was concentrated under reduced pressure and then azeotropically distilled with toluene.
• Example 5 the title compound (134 mg, 0.273 mmol, 91%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (157 mg, 0.300 mmol) synthesized in Production example 5-2 and (piperidin-4-yl)-(pyrrolidin-1-yl)methanone (328 mg, 1.50 mmol) obtained from N-benzyloxycarbonylisonipecotic acid and pyrrolidine by the method similar to Example 21.
• Example 27 the title compound (88.5 mg, 0.19 mmol, 63.8%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (121 mg, 0.30 mmol, Production example 29-1) and 4-(1-pyrrolidinyl)piperidine.
• Phenyl N1-methyl-5-(2-(((4-(pyrrolidin-1-yl)piperidin-1-yl)carbonyl)amino)pyridin-4-yloxy)-1H-1-indolecarboxamide may be synthesized by the following methods.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (12.1 g, 23.2 mmol) synthesized in Production example 5-2 was dissolved in dimethylformamide (150 ml); 4-(1-pyrrolidinyl)piperidine (14.4 g, 93.3 mmol) was added thereto; and the reaction mixture was stirred at room temperature for 16 hours. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine and concentrated to about 100 ml. The residue was allowed to be kept cool at 5° C. for overnight to precipitate crystals. The crystals were filtered off, washed with ethyl acetate to yield the title compound (7.8 g, 16.9 mmol, 73%) as white crystals.
• Example 27 the title compound (94.6 mg, 0.20 mmol, 66.2%) as white crystals was obtained from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (121 mg, 0.30 mmol, Production example 29-1) and 4-piperidinopiperidine.
• N1-Methyl-5-(2-(((4-(piperidin-1-yl)piperidin-1-yl)carbonyl)amino)pyridin-4-yloxy)-1H-1-indolecarboxamide may be prepared by the following methods.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (15.5 g, 29.7 mmol) synthesized in Production example 5-2 was dissolved in dimethylformamide (180 ml); 4-piperidinopiperidine (20.0 g, 119 mmol) was added thereto; and the reaction mixture was stirred at room temperature for 9 hours. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine and concentrated to about 100 ml. The residue was allowed to be kept cool at 5° C. overnight to precipitate crystals. The crystals were filtered off and washed with ethyl acetate to yield the title compound (4.0 g, 8.4 mmol, 28%) as white crystals.
• Example 27 the title compound (73.2 mg, 0.17 mmol, 57.8%) was obtained as white powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (121 mg, 0.30 mmol, Production example 29-1) and 1-ethylpiperazine.
• Example 27 the title compound (97.6 mg, 0.22 mmol, 59.7%) was obtained as pale pink powder from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.37 mmol, Production example 29-1) and 1-(2-hydroxyethyl)piperazine.
• Example 28 the title compound (166.8 mg, 0.37 mmol, 70.5%) was obtained as white crystals from N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (150 mg, 0.53 mmol, Production example 5-1) and 3-methylsulfonylpropylamine hydrochloride (410 mg, 2.36 mmol).
• Example 28 the title compound (189.8 mg, 0.40 mmol, 74.5%) was obtained as white powder from N1-methyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (150 mg, 0.53 mmol, Production example 5-1) and 1-(2-dimethylaminoacetyl)piperazine (500 mg, 2.92 mmol).
• 1-(2-Dimethylaminoacetyl)piperazine was prepared by the following methods.
• Benzyl piperazine-1-carbamate (2.203 g, 10.0 mmol) was dissolved in tetrahydrofuran (50 ml); 2-dimethylaminoacetic acid (1.24 g, 12.0 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride(2.30 g, 12.0 mmol), 1-hydroxy-1H-benzotriazole monohydrate (1.84 g, 12.0 mmol) and triethylamine (3.35 ml, 24.0 mmol) were added thereto; and the reaction mixture was stirred at room temperature for 7 hours.
• the reaction mixture was partitioned between ethyl acetate and a saturated aqueous solution of sodium hydrogencarbonate.
• Benzyl 4-(2-dimethyaminoacetyl)piperazine-1-carbamate (954 mg, 3.12 mmol) synthesized in Production example 51-1 was dissolved in methanol (50 ml) under nitrogen atmosphere; 10% palladium on carbon (50% wet, 665 mg) was added thereto; the reaction system was purged with hydrogen at atmospheric pressure; and the reaction mixture was stirred overnight. After the reaction system was purged with nitrogen, the catalyst was filtered out, and washed with methanol. The solvent, together with the filtrate and washing solution, was distilled off, and the residue was dried under reduced pressure to yield the title compound (508 mg, 2.97 mmol, 95.0%) as a colorless oil.
• Example 27 the title compound (121.3 mg, 0.25 mmol, 68.2%) was obtained as white crystals from phenyl N-(4-(1-methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.37 mmol, Production example 29-1) and 1-cyclohexylpiperazine.
• Example 27 the title compound (58.6 mg, 0.15 mmol, 49.4%) was obtained as white powder from phenyl N-(4-((1-((methylamino)carbonyl)-1H-5-indolyl)oxy-2-pyridyl)carbamate (121 mg, 0.30 mmol, Production example 29-1) and morpholine.
• N4-(4-(1-(Methylamino)carbonyl-1H-5-indolyl)-oxy-2-pyridyl)-4-morpholinecarboxamide may be prepared by the following methods.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (20 g, 38 mmol) synthesized in Production example 5-2 was dissolved in N,N-dimethylformamide (190 ml); morpholine (13.3 mg, 153 mmol) was added thereto; and the reaction system was stirred at room temperature for 9 hours. The reaction mixture was partitioned between ethyl acetate and water; and the organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure.
• the filtrate was concentrated under reduced pressure.
• the residue was dissolved in diethyl ether (40 ml); hexane (200 ml) was added thereto; and precipitated insoluble syrupy portion was removed from the solution; and the resultant solution was concentrated again under reduced pressure.
• the residue was dissolved in ethyl acetate (300 ml) and was allowed to stand at room temperature.
• Phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (150 mg, 0.278 mmol, Production example 5-2) was dissolved in N,N-dimethylformamide (1.5 ml); 5N aqueous solution of sodium hydroxide (0.29 ml) and 1,1-dioxothiomorpholine hydrochloride (246 mg, 1.44 mmol) were added thereto; and the reaction mixture was stirred at room temperature for 5 hours. The reaction mixture was partitioned between ethyl acetate and water.
• the starting material was synthesized by the following methods.
• tert-Butyl thiomorpholine-4-carboxylate (1.91 g, 9.42 mmol) was dissolved in dichloromethane (50 ml); m-chloroperbenzoic acid (5.0 g, 19 mmol) was gradually added while cooled with ice bath, stirred, and under nitrogen atmosphere; and the reaction mixture was stirred at room temperature for 12 hours. After addition of a saturated aqueous solution of sodium thiosulfate, the reaction mixture was kept stirred for a while; and this was subjected to extraction with ethyl acetate, washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
• Triethylamine (8.1 ml, 58 mmol) were added to the obtained crystals; and the reaction mixture was stirred at room temperature.
• tert-Butoxycarbonyl dicarbonate (13.3 ml, 58 mmol) was added thereto; and the reaction mixture was stirred at room temperature for 10 hours.
• tert-Butyl 1,1-dioxothiomorpholine-4-carboxylate (2.03 g, 8.63 mmol) was dissolved in a mixture of hydrochloric acid-methanol 10 (20 ml, purchased from Tokyo Kasei Kogyo Co., Ltd) and tetrahydrofuran (20 ml); hydrochloric acid (4.0 ml) was added thereto during stirring at room temperature; and the reaction mixture was stirred at room temperature for 3 hours. The reaction mixture was concentrated; methanol (20 ml), tetrahydrofuran (20 ml) and hydrochloric acid (4.0 ml) were added to the obtained crystals.
• Example 5 the title compound (118 mg, 0.246 mmol, 82%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate (161 mg, 0.300 mmol), and (2R)-2-amino-3-hydroxy-1-(pyrrolidin-1-yl)propan-1-one (265 mg, 1.67 mmol) obtained by the method similar to Example 21 from (2R)-2-benzyloxycarbonylamino-3-hydroxypropionic acid and pyrrolidine.
• the starting material was synthesized as follows.
• Example 5 the title compound (132 mg, 0.275 mmol, 92%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (161 mg, 0.300 mmol) synthesized in Production example 55-1 and (2S)-2-amino-3-hydroxy-1-(pyrrolidin-1-yl)propan-1-one hydrochloride (synthesized as an intermediate in Example 18).
• Example 5 the title compound (127 mg, 0.257 mmol, 86%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (161 mg, 0.300 mmol) and (2R)-2-amino-3-hydroxy-1-(piperidin-1-yl)propan-1-one (228 mg, 1.32 mmol, synthesized as an intermediate in Example 21).
• Example 5 the title compound (54.4 mg, 0.110 mmol, 73%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (80.1 mg, 0.150 mmol) synthesized in Production example 55-1 and (2S)-2-amino-3-hydroxy-1-(piperidin-1-yl)propan-1-one hydrochloride (156 mg, 0.748 mmol, synthesized as an intermediate in Example 20).
• the starting material was synthesized as follows.
• Methyl aminoacetate hydrochloride (292 mg, 2.33 mmol) was suspended in a solvent mixture of N,N-dimethylformamide (4 ml) and triethylamine (1 ml); phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (250 mg, 0.466 mmol, Production example 55-1) was added thereto; and the reaction mixture was stirred at room temperature for 2 days.
• the reaction mixture was partitioned between ethyl acetate and water; and the organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
• the obtained residue was dissolved in a solvent mixture of tetrahydrofuran (2 ml) and methanol (1 ml); and 4N aqueous solution of sodium hydroxide was added thereto while stirred at room temperature; and the reaction mixture was stirred for 1.5 hour at room temperature.
• 1N hydrochloric acid was added, extraction was performed with ethyl acetate-tetrahydrofuran, washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
• the obtained crystals were suspended in diethyl ether, filtered off, washed with dimethyl ether, and dried under aeration to yield the title compound as colorless crystals (149 mg, 0.375 mmol, 80.5%).
• Example 27 a crude product of tert-butyl 4-(((((4-((1-(ethylamino)carbonyl-1H-5-indolyl)oxy)-2-pyridyl)amino)carbonyl)amino)methyl)piperidin-1-carboxylate was obtained from phenyl N-(4-(1-(ethylamino)carbonyl)-1H-5-indolyl)oxy)-2-pyridyl)carbamate (150 mg, 0.36 mmol, Production example 27-2) and tert-butyl 4-aminomethyl-1-piperidine carboxylate.
• Trifluoroacetic acid was added to this at room temperature; the solution was stirred for 30 minutes; trifluoroacetic acid was distilled off; triethylamine-methanol was added to the residue to neutralize; and the solvent was distilled off again under reduced pressure.
• the residue was dissolved in tetrahydrofuran (4.0 ml)-methanol (4.0 ml); acetic acid (0.1 ml), 37% aqueous formaldehyde solution (0.5 ml) and sodium cyanoborohydride (90.5 mg, 1.44 mmol) were added at room temperature; and the reaction mixture was stirred for 1 hour.
• the reaction mixture was partitioned between ethyl acetate and water; and the organic layer was washed with water and brine, dried over anhydrous sodium sulfate.
• the crystals were precipitated from diethyl ether, filtered off, and dried under aeration to yield the title compound as white crystals (197.0 mg, 0.44 mmol, 60.7%).
• Example 27 the title compound (140.9 mg, 0.32 mmol, 89.2%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.36 mmol, Production example 27-2) and 2-(diethylamino)ethylamine.
• Example 27 the title compound (155.0 mg, 0.34 mmol, 95.1%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.36 mmol, Production example 27-2) and 4-(2-aminoethyl)morpholine.
• Example 27 the title compound (49.1 mg, 0.11 mmol, 35.1%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (125 mg, 0.30 mmol, Production example 27-2) and 1-(2-aminoethyl)-4-hydroxypiperidine dihydrochloride.
• Example 27 the title compound (114.3 mg, 0.25 mmol, 25.3%) was obtained as white crystals from phenyl N-(4-(1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (402 mg, 1.0 mmol, Production example 29-1) and 1-(2-aminoethyl)-4-hydroxypiperidine dihydrochloride.
• Example 27 the title compound (159.9 mg, 0.35 mmol, 98.1%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (150 mg, 0.36 mmol, Production example 27-2) and 3-(diethylamino)propylamine.
• Example 27 the title compound (135.0 mg, 0.29 mmol, 96.4%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (125 mg, 0.30 mmol, Production example 27-2) and 4-(3-aminopropyl)morpholine.
• Example 27 the title compound (141.9 mg, 0.30 mmol, 98.6%) was obtained as white crystals from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (125 mg, 0.30 mmol, Production example 27-2) and 1-(3-aminopropyl)-4-methylpiperazine.
• Tetrahydrofuran(30 ml) and triethylamine (3.87 ml, 27.8 mmol) were added to N1-cyclopropyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (2.85 g, 9.25 mmol, CAS No. 417722-12-4) which was described in WO 02/32872; phenyl chloroformate (2.57 ml, 20.4 mmol) was added thereto at 0° C. while stirred; and the reaction mixture was stirred at room temperature for 2 hours.
• Example 5 the title compound (113 mg, 0.229 mmol) was obtained as white crystals from a mixture (165 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate, intermediates in Example 68, and (2R)-2-amino-3-hydroxy-1-(pyrrolidin-1-yl)propan-1-one (265 mg, 1.67 mmol, synthesized as an intermediate in Example 55).
• Example 5 the title compound (117 mg, 0.237 mmol) was obtained as white crystals from a mixture (165 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate, intermediates in Example 68, and (2S)-2-amino-3-hydroxy-1-(pyrrolidin-1-yl)propan-1-one hydrochloride (synthesized as an intermediate in Example 18).
• Example 5 the title compound (90.9 mg, 0.197 mmol) was obtained as white crystals from a mixture (165 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate, intermediates in Example 68, and 2-amino-1-(pyrrolidin-1-yl)ethanone hydrochloride (247 mg, 1.50 mmol, synthesized as an intermediate in Example 7).
• Example 5 the title compound (113 mg, 0.237 mmol) was obtained as white crystals from a mixture (165 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate, intermediates in Example 68, and 3-amino-1-(pyrrolidin-1-yl)propan-1-one hydrochloride (268 mg, 1.50 mmol, synthesized as an intermediate in Example 25).
• Example 5 the title compound (106 mg, 0.209 mmol) was obtained as white crystals from a mixture (165 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate, intermediates in Example 68, and (2R)-2-amino-3-hydroxy-1-(piperidin-1-yl)propan-1-one (228 mg, 1.32 mmol, synthesized as an intermediate in Example 57).
• Example 5 the title compound (66.8 mg, 0.132 mmol) was obtained as white crystals from a mixture (82.3 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(-phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate, intermediates in Example 68, and (2S)-2-amino-3-hydroxy-1-(piperidin-1-yl)propan-1-one hydrochloride (156 mg, 0.748 mmol, synthesized as an intermediate in Example 20).
• Example 28 the title compound was obtained from N1-phenyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (CAS No. 417721-87-0) which was described in WO 02/32872 and 1-(3-aminopropyl)-4-methylpiperazine.
• Tetrahydrofuran (20 ml) and triethylamine (2.70 ml, 19.4 mmol) were added to N1-ethyl-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (1.91 g, 6.45 mmol, Production example 27-1); phenyl chloroformate (1.79 ml, 14.2 mmol) was added thereto at 0° C. while stirred; and the reaction mixture was stirred at room temperature for 2 hours.
• reaction mixture was partitioned between ethyl acetate and water; the organic layer was concentrated to yield a mixture (2.95 g) of phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate.
• Example 41 the title compound was obtained as colorless crystals (124 mg, 0.283 mmol, 89.4%) from 4-hydroxy-4-methylpiperidine monohydrochloride (216 mg, 1.42 mmol, Production example 8-3) and phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (170 mg, 0.317 mmol, Production example 55-1).
• Example 27 the title compound was obtained as white powder (18.7 mg, 0.044 mmol, 14.7%) from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate (125 mg, 0.30 mmol, Production example 27-2) and 4-hydroxypiperidine.
• N,N-Dimethylformamide (4 ml) and piperidine (0.31 ml, 3.13 mmol) were added to a mixture (0.336 g) of phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate obtained in Example 77; the reaction mixture was stirred overnight; the reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated to yield the title compound as crystals (182 mg, 0.45 mmol).
• N,N-Dimethylformamide (5 ml) and pyrrolidine (0.36 ml, 4.3 mmol) were added to a mixture (0.461 g) of phenyl N-(4-(1-(ethylamino)carbonyl)-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyl)oxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate obtained in Example 77; the reaction mixture was stirred overnight; the reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated to yield the title compound as crystals (245 mg, 0.623 mmol).
• Example 54 the title compound was obtained as colorless crystals (116 mg, 0.253 mmol, 80.0%) from 1,1-dioxothiomorpholine hydrochloride (248 mg, 1.42 mmol, Production example 54-3) and phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolyloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (170 mg, 0.317 mmol, Production example 55-1).
• Example 27 the title compound was obtained as white crystals (94.3 mg, 0.26 mmol, 70.9%) from phenyl N-(4-(1-(ethylamino)carbonyl-1H-5-indolylyl)oxy-2-pyridinyl)carbamate (150 mg, 0.36 mmol, Production example 27-2) and methoxylamine hydrochloride.
• N,N-Dimethylformamide (5 ml) and 4-hydroxypiperidine (433 mg, 4.29 mmol) were added to a mixture (470 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate obtained in Example 68; the reaction mixture was stirred overnight; the reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated to yield the title compound as white crystals (220 mg, 0.51 mmol, 39%).
• Example 41 the title compound was obtained as colorless crystals (109 mg, 0.242 mmol) from 4-hydroxy-4-methylpiperidine monohydrochloride (221 mg, 1.46 mmol, Production example 8-3) and a mixture (200 mg, intermediates in Example 68) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate.
• N,N-Dimethylformamide (5 ml) and pyrrolidine (0.35 ml, 4.2 mmol) were added to a mixture (470 mg) of phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate and phenyl N-(4-(1-cyclopropylaminocarbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate obtained in Example 68; the reaction mixture was stirred overnight; the reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated to yield the title compound as white crystals (200 mg, 0.49 mmol).
• Phenyl N-(4-(1-cyclopentylaminocarbonyl-1H-indol-5-yloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate 200 mg, 0.35 mmol was dissolved in N,N-dimethylformamide (1.5 ml) and morpholine (0.15 ml, 1.73 mmol); and the reaction mixture was stirred at room temperature overnight. The reaction mixture was partitioned between ethyl acetate and water; and the organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure.
• the starting materials were synthesized as follows.
• N1-Cyclopentyl-5-(2-aminopyridin-4-yloxy)-1H-1-indolecarboxamide (1.55 g, 4.58 mmol) was dissolved in tetrahydrofuran (90 ml); triethylamine (1.43 ml, 10.31 mmol) and pyridine (0.56 ml, 6.88 mmol) were added thereto; and the reaction mixture was stirred. The reaction mixture was cooled with ice; phenyl chloroformate (1.44 ml, 11.45 mmol) was added dropwise; and the reaction mixture was stirred at room temperature for 2.5 hours.
• reaction mixture was partitioned between ethyl acetate and water; and the organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure.
• Example 90 the title compound was obtained as colorless crystals (129 mg, 0.278 mmol, 80.2%) from phenyl N-(4-(1-cyclopentylaminocarbonyl-1H-indol-5-yloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (200 mg, 0.346 mmol, Production example 90-3) and 4-hydroxypiperidine (175 mg, 1.73 mmol).
• Example 90 the title compound was obtained as colorless crystals (83 mg, 0.161 mmol, 46.3%) from phenyl N-(4-(1-cyclopentylaminocarbonyl-1H-indol-5-yloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (200 mg, 0.346 mmol, Production example 90-3) and 4-(1-pyrrolidinyl)piperidine (268 mg, 1.73 mmol).
• N,N-dimethylformamide (30 ml), pyridine (0.52 ml, 6.4 mmol) and triethylamine (1.35 ml, 9.69 mmol) were added to N1-(3-methylbutyl)-5-((2-amino-4-pyridyl)oxy)-1H-1-indolecarboxamide (1.45 g, 4.29 mmol); phenyl chloroformate (0.81 ml, 6.4 mmol) was added at 0° C. while stirring; and the reaction mixture was stirred at room temperature for 1 hour.
• reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated and subjected to silica gel column chromatography to yield a mixture (2.0 g) of phenyl N-(4-(1-((3-methylbutyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-((3-methylbutyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate.
• the starting materials were synthesized as follows.
• Phenyl chloroformate (14.8 ml, 0.117 mol) was dissolved in tetrahydrofuran (200 ml); triethylamine (18.0 ml, 0.129 mol) and isoamylamine (15.0 ml, 0.129 mol) were added thereto at room temperature while stirring; and the reaction mixture was stirred overnight. The reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated and dried under reduced pressure to yield the title compound as crystals (14 g, 0.068 mol, 58%).
• N,N-dimethylformamide (2.5 ml) and 4-hydroxypiperidine (213 mg, 2.11 mmol) were added to a mixture (243 mg) of phenyl N-(4-(1-((3-methylbutyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-carbamate and phenyl N-(4-(1-((3-methylbutyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)—N-(phenoxycarbonyl)carbamate synthesized in Example 93; and the reaction mixture was stirred for 2 hours.
• N,N-dimethylformamide (5 ml) and morpholine (0.163 ml, 1.87 mmol) were added to a mixture (0.6 g) of phenyl N-(4-(1-((3-methylbutyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-((3-methylbutyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate synthesized in Example 93; and the reaction mixture was stirred for 2 hours.
• Tetrahydrofuran (20 ml) and triethylamine (1.73 ml, 12.4 mmol) were added to N1-(1-ethylpropyl)-5-(2-amino-4-pyridyl)oxy-1H-1-indolecarboxamide (1.45 g, 4.29 mmol); phenyl chloroformate (1.15 ml, 9.1 mmol) was added thereto at 0° C. while stirring; and the reaction mixture was stirred at room temperature for 1 hour.
• reaction mixture was partitioned between ethyl acetate and water; and the organic layer was concentrated and subjected to silica gel column chromatography to yield a mixture (1.8 g) of phenyl N-(4-(1-((1-ethylpropyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-((1-ethylpropyl)amino)carbonyl-1H-5-indolyl)-oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate.
• the starting materials were synthesized by following methods.
• N,N-Dimethylformamide (4 ml) and 4-hydroxypiperidine 360 mg, 3.56 mmol were added to a mixture (456 mg) of phenyl N-(4-(1-((1-ethylpropyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-carbamate and phenyl N-(4-(1-((1-ethylpropyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate synthesized in Example 96; and the reaction mixture was stirred for 2 hours.
• N,N-dimethylformamide (3 ml) and morpholine (0.22 ml, 2.5 mmol) were added to a mixture (0.324 g) of phenyl N-(4-(1-((1-ethylpropyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate and phenyl N-(4-(1-((1-ethylpropyl)amino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)-N-(phenoxycarbonyl)carbamate synthesized in Example 96; and the reaction mixture was stirred for 2 hours.
• Example 90 the title compound was obtained as colorless crystals (131 mg, 0.29 mmol, 84%) from phenyl N-(4-(1-(1-pentylamino)carbonyl-1H-indol-5-yloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (200 mg, 0.35 mmol) and morpholine (0.15 ml, 1.7 mmol).
• the starting materials were synthesized by following procedures.
• Example 90-1 the title compound was obtained as pale yellow crystals (20.5 g, 99 mmol, 99%) from 1-pentylamine (11.6 ml, 100 mmol), pyridine (8.9 ml, 110 mmol) and phenyl chloroformate (13.8 ml, 110 mmol).
• reaction mixture was partitioned between water and ethyl acetate (insoluble portions were perfectly dissolved by adding a small amount of methanol); and the organic layer was washed with brine, dried over anhydrous sodium sulfate, concentrated under reduced pressure.
• Example 90-3 the title compound was obtained as a colorless amorphous solid (2.39 g, 4.13 mmol, 90.1%) from N1-(1-pentyl)-5-(2-aminopyridin-4-yloxy)-1H-1-indolecarboxamide (1.55 g, 4.58 mmol), triethylamine (1.43 ml, 10.31 mmol), pyridine (0.56 ml, 6.88 mmol), and phenyl chloroformate (1.44 ml, 11.45 mmol).
• Example 90 the title compound was obtained as colorless crystals (149 mg, 0.320 mmol, 92.6%) from phenyl N-(4-(1-(1-pentyl)aminocarbonyl-1H-indol-5-yloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (200 mg, 0.346 mmol, Production example 99-3) and 4-hydroxypiperidine (174 mg, 1.73 mmol).
• Example 90 the title compound was obtained as colorless crystals (124 mg, 0.239 mmol, 69.2%) from phenyl N-(4-(1-(1-pentyl)aminocarbonyl-1H-indol-5-yloxy)-2-pyridyl)-N-(phenoxycarbonyl)carbamate (200 mg, 0.346 mmol, Production example 99-3) and 4-(1-pyrrolidinyl)piperidine (267 mg, 1.73 mmol).
• Phenyl N-(4-(3-chloro-1-(methylamino)carbonyl-1H-5-indolyl)oxy-2-pyridyl)carbamate 160 mg
• 3-(diethylamino)propylamine 120 mg
• N,N-dimethylformamide 5 ml
• extraction was performed with ethyl acetate.
• the starting materials were synthesized as follows.

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