Patent ID: 6372755
Filing Date: 2002-04-16
Classification: A61K,A61P

Abstract:
A pharmaceutical composition comprising, a 4,5-epoxy-morphinan derivative and at least one substance selected from the group consisting of the following materials (1), (2), (3), (4) and (5):(1) a water soluble antioxidant selected from the group consisting of sodium sulfite, sodium hydrogensulfite, sodium pyrosulfite, Rongalite, sodium nitrite, L-ascorbic acid, erysorbic acid, sodium thiosulfate, sodium thiomalate, cysteine, thioglycerol, and hydroxyquinoline sulfate; (2) a fat soluble antioxidant selected from the group consisting of propyl gallate, butyl hydroxytoluene, butyl hydroxyanisole, tocopherol, ascorbyl palmitate, ascorbyl stearate, nordihydroguaiaretic acid, and mercaptobenzimidazole; (3) a synergist selected from the group consisting of EDTA, salts thereof, citric acid, salts thereof, and lecithin; (4) a sugar selected from the group consisting of D-mannitol, D-sorbitol, xylitol, glucose, and fructose; and (5) a surfactant selected from the group consisting of sorbitan sesquioleate, sorbitan laurate, sorbitan palmitate, glyceryl myristate, polyoxyethylene nonylphenyl ether, and polyoxyethylene lauryl ether, wherein the 4,5-epoxy-morphinan derivative is a compound represented by the general formula (I) or pharmacologically acceptable salts thereof: wherein - - - is a double bond, or a single bond; R1 is an alkyl group having from 1 to 5 carbon atoms, a cycloalkylalkyl group having from 4 to 7 carbon atoms, a cycloalkenylalkyl group having from 5 to 7 carbon atoms, an aryl group having from 6 to 12 carbon atoms, an aralkyl group having from 7 to 13 carbon atoms, an alkenyl group having from 4 to 7 carbon atoms, an allyl group, a furan-2-ylalkyl group having from 1 to 5 carbon atoms, or a thiophene-2-ylalkyl group having from 1 to 5 carbon atoms; R2 is a hydrogen atom, a hydroxy group, a nitro group, an alkanoyloxy group having from 1 to 5 carbon atoms, an alkoxy group having from 1 to 5 carbon atoms, an alkyl group having from 1 to 5 carbon atoms, or â€”NR7R8; R7 is a hydrogen atom or an alkyl group having from 1 to 5 carbon atoms; R8 is a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms or â€”C(&boxH;O)R9; R9 is a hydrogen atom, a phenyl group, or an alkyl group having from 1 to 5 carbon atoms; R3 is a hydrogen atom, a hydroxy group, an alkanoyloxy group having from 1 to 5 carbon atoms, or an alkoxy group having from 1 to 5 carbon atoms; A is â€”N(R4)C(&boxH;X)â€”, â€”N(R4)C(&boxH;X)Yâ€”, â€”N(R4)â€”, or â€”N(R4)SO2â€” (wherein X and Y are, independently of one another, NR4, S, or O; and R4 is a hydrogen atom, a straight-chain or branched-chain alkyl group having from 1 to 5 carbon atoms, or an aryl group having from 6 to 12 carbon atoms; and R4 is identical or different in the formula); B is a valence bond, a straight-chain or branched chain alkylene group having from 1 to 14 carbon atoms (wherein the alkylene group is optionally substituted with one or more substituents selected from the group consisting of an alkoxy group having from 1 to 5 carbon atoms, an alkanoyloxy group having from 1 to 5 carbon atoms, a hydroxy group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an amino group, a nitro group, a cyano group, a trifluoromethyl group, a trifluoromethoxy group and a phenoxy group, and wherein one to three methylene groups of the alkylene group is optionally replaced with carbonyl groups), a straight-chain or branched-chain acyclic unsaturated hydrocarbon containing from one to three double bonds and/or triple bonds having from 2 to 14 carbon atoms (wherein the acyclic unsaturated hydrocarbon is optionally substituted with one or more substituents selected from the group consisting of an alkoxy group having from 1 to 5 carbon atoms, an alkanoyloxy group having from 1 to 5 carbon atoms, a hydroxy group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an amino group, a nitro group, a cyano group, a trifluoromethyl group, a trifluoromethoxy group and a phenoxy group, and wherein one to three methylene groups of the acyclic unsaturated hydrocarbon is optionally replaced with carbonyl groups), or a straight-chain or branched-chain saturated or unsaturated hydrocarbon containing from one to five thioether, ether, and/or amino bonds and having from 1 to 14 carbon atoms (wherein no hetero atoms are bonded directly to A, and one to three methylene groups of the hydrocarbon is optionally replaced with carbonyl groups); and R5 is a hydrogen atom or an organic group having a basic skeleton selected from the group consisting of the following basic formulas: organic groups represented by R5 wherein the organic group has optionally at least one substituent selected from the group consisting of an alkyl group having from 1 to 5 carbon atoms, an alkoxy group having from 1 to 5 carbon atoms, an alkanoyloxy group having from 1 to 5 carbon atoms, a hydroxy group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an amino group, a nitro group, a cyano group, an isothiocyanate group, a trifluoromethyl group, a trifluoromethoxy group, and a methylenedioxy group; R6 is a hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, or an alkanoyl group having from 1 to 5 carbon atoms.