Novel 1,5-benzothiazepine derivatives of the formula:
wherein R1 is hydrogen or lower alkyl, R2 is hydrogen, lower alkanoyl or benzyl, R3 is hydrogen or lower alkyl and either one of R4 and R5 is hydrogen and the other is chlorine, or a pharmaceutically acceptable acid addition salt thereof are disclosed. In form of pharmaceutical compositions the said derivative (I) and its salt have a potent platelet aggregation-inhibiting activity.
式中的新型 1,5-苯并
硫氮杂卓衍
生物:
其中 R1 是氢或低级烷基,R2 是氢、低级烷酰基或苄基,R3 是氢或低级烷基,R4 和 R5 中的一个是氢,另一个是
氯,或其药学上可接受的酸加成盐。在药物组合物中,上述衍
生物 (I) 及其盐具有强效的血小板聚集抑制活性。