Compounds of the formulasee formula I)and their salts,wherein Cy represents cyclohexyl；Y is CH=CH.PHI., CH.PHI.2, .PHI. or Cy,X is trivalent straight-chain alkylene (3-10C) or trivalent straight-chain 1-alkenylene(3-10C) optionally substituted by oxo at the C adjacent N when n is 0 and Y is.PHI.2CH； and isotherwise trivalent straight-chain alkylene (5-10C) or trivalent straight-chain 1-alkenylene (5-10C) optionally substituted by oxo at the C adjacent N；Z is N, NCO, CHNCOR1 or CHNR1, wherein R1 is alkyl (1-6C)； andn is 0-5；wherein each .PHI. and Cy independently may optionally be substituted by alkyl(1-6C) orby halo, CF3, OCF3, NO2, NR2, OR, SR, COR, COOR, CONR2, NROCR or OOCR where Ris Hor alkyl (1-4C), or two substituents may form a 5-7 membered ringwith the proviso that the compounds of formula (1) contain at least onearomatic moiety,are useful as calcium channel blockers.
