N-(PIPERIDINYL-1-ALKYL)-SUBSTITUTED CYCLOHEXANE CARBOXYLIC ACID AMIDES AS 5-HT1A RECEPTOR ANTAGONISTS

摘要

PCT No. PCT/GB94/01507 Sec. 371 Date Jan. 16, 1996 Sec. 102(e) Date Jan. 16, 1996 PCT Filed Jul. 12, 1994 PCT Pub. No. WO95/02592 PCT Pub. Date Jan. 26, 1995 (I) Compounds of formula (I) and the pharmaceutically acceptable acid addition salts thereof are 5-HT1A binding agents and may be used, for example, as anxiolytics. In the formula a and b each represents 0, 1, 2 or 3 such that the sum of a+b is 0, 1, 2 or 3, the dotted line represents an optional double bond which may be present in the ring, provided that a is at least 1, A is an alkylene chain of 1 or 2 carbon atoms optionally substituted by one or more lower alkyl groups, R is a mono or bicyclic aryl or heteroaryl radical with the proviso that R is not an unsubstituted phenyl group, R1 is a mono or bicyclic heteroaryl radical, and R2 is cycloalkyl or cycloalkenyl.