Serotonin antagonists
First Claim
1. A pharmaceutical composition containing a pharmaceutically effective serotonin antagonizing amount of an amidine of the formula:
- ##EQU2## or a pharmaceutically acceptable acid addition salt thereof wherein R1 or R2 are phenyl or thien-2-yl optionally substituted in one, two, or three positions by substituents halogen, lower alkyl, lower alkoxy, hydroxy, lower alkylthio, phenyl, phenoxy, phenyl - (lower alkyl) or phenyl - (lower alkoxy), each of said substituents phenyl, phenoxy, phenyl - (lower alkyl) and phenyl-(lower alkoxy) being optionally substituted in one or two positions by a member selected from the class consisting of halogen, lower alkyl, lower alkoxy, hydroxy and lower alkylthio;
A1 is a divalent straight or branched alkylene group containing from two to six carbon atoms and one or two divalent atoms which are each an oxygen or sulphur atom;
provided that there are at least two carbon atoms between the divalent atom and the - NH - group and between the two divalent atoms, and a pharmaceutically acceptable carrier therefore.
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Abstract
A compound of the formula ##EQU1## or an acid addition salt thereof wherein R1 and R2 are the same or different and each is a phenyl or thien-2-yl group optionally substituted in one or more positions by a substituent selected from the class consisting of halogen, lower alkyl, lower alkoxy, hydroxy, lower alkylthio, phenyl, phenoxy, phenyl-(lower-alkyl) and phenyl-(lower-alkoxy), each of the said phenyl, phenoxy, phenyl-(lower-alkyl) and phenyl-(lower-alkoxy) substituent groups being optionally substituted in one or more positions by a member selected from the class consisting of halogen, lower alkyl, lower alkoxy, hydroxy, and lower alkylthio;
A1 is a divalent straight or branched alkylene group containing from two to six carbon atoms and one or two divalent atoms which are each an oxygen or sulphur atom, provided that there are at least two carbon atoms between the divalent atom and the --NH-- group and between the two divalent atoms; and
A2 is the methylene group --CH2 --.
25 Citations
35 Claims
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1. A pharmaceutical composition containing a pharmaceutically effective serotonin antagonizing amount of an amidine of the formula:
- ##EQU2## or a pharmaceutically acceptable acid addition salt thereof wherein R1 or R2 are phenyl or thien-2-yl optionally substituted in one, two, or three positions by substituents halogen, lower alkyl, lower alkoxy, hydroxy, lower alkylthio, phenyl, phenoxy, phenyl - (lower alkyl) or phenyl - (lower alkoxy), each of said substituents phenyl, phenoxy, phenyl - (lower alkyl) and phenyl-(lower alkoxy) being optionally substituted in one or two positions by a member selected from the class consisting of halogen, lower alkyl, lower alkoxy, hydroxy and lower alkylthio;
A1 is a divalent straight or branched alkylene group containing from two to six carbon atoms and one or two divalent atoms which are each an oxygen or sulphur atom;
provided that there are at least two carbon atoms between the divalent atom and the - NH - group and between the two divalent atoms, and a pharmaceutically acceptable carrier therefore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- ##EQU2## or a pharmaceutically acceptable acid addition salt thereof wherein R1 or R2 are phenyl or thien-2-yl optionally substituted in one, two, or three positions by substituents halogen, lower alkyl, lower alkoxy, hydroxy, lower alkylthio, phenyl, phenoxy, phenyl - (lower alkyl) or phenyl - (lower alkoxy), each of said substituents phenyl, phenoxy, phenyl - (lower alkyl) and phenyl-(lower alkoxy) being optionally substituted in one or two positions by a member selected from the class consisting of halogen, lower alkyl, lower alkoxy, hydroxy and lower alkylthio;
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18. A method of antagonizing 5-hydroxytryptamine or its formation in the body of an animal which comprises administering to an animal an effective serotonin antagonizing amount of ##EQU3## or a pharmaceutically acceptable acid addition salt thereof wherein R1 and R2 are phenyl or thien-2-yl optionally substituted in one, two, or three positions by substituents halogen, lower alkyl, lower alkoxy, hydroxy, lower alkylthio, phenyl, phenoxy, phenyl - (lower alkyl) or phenyl - (lower alkoxy, each of said substituents phenyl, phenoxy, phenyl-(lower alkyl) and phenyl-(lower alkoxy) being optionally substituted in one or two positions by a member selected from the class consisting of halogen, lower alkyl, lower alkoxy, hydroxy and lower alkylthio;
A1 is a divalent straight or branched alkylene group containing from two to six carbon atoms and one or two divalent atoms which are each an oxygen or sulphur atom, provided that there are at least two carbon atoms between the divalent atom and the -- NH -- group and between the two divalent atoms, and a pharmaceutically acceptable carrier therefor. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
Specification