N-HYDROCARBYL-4-SUBSTITUTED PIPERIDINES, THEIR PREPARATION AND USE AS CALCIUM BLOCKING AGENTS

摘要

Compounds of structure (I) in which R is C1-8alkyl(phenyl)p, C2-8alkenyl(phenyl)p, C2-8alkenyl(phenyl)p, C3-8cycloalkyl or C1-8alkylC3-8cycloalkyl; p is 0 to 2; n is 0 to 6; A is a bond, oxygen, sulphur or NR1; R1 is hydrogen, C¿1-8?alkyl or phenylC1-4alkyl; m is 0 to 3; and Ar is aryl or heteroaryl, each of which may be optionally substituted, and salts thereof; processes for preparing said compounds, pharmaceutical compositions containing them and their use in therapy, in particular as calcium blocking agents.