| abstract |
A process for preparing 1,5-benzothiazepine derivatives of the formula wherein Ar is a phenyl substituted with a lower alkoxy, R is a lower alkyl, R 1 and R 2 are each a lower alkyl, and Y is a lower alkylene, which have excellent coronary vasodilating and psychoneurotic activities and are useful particularly as a Ca ++ -antagonistic coronary vasodilator. |