A novel process for preparing 1,5-benzothiazepine derivative [II]:
wherein Ring A and Ring B are substituted or unsubstituted benzene ring, and R3 is H, (di-lower alkylamino)-lower alkyl or substituted or unsubstituted piperazinyl-lower alkyl, or a salt thereof, in high yield and in a single step from a novel 3-(2-amino-substituted or unsubstituted phenylthio)-2-hydroxy-3-substituted or unsubstituted phenylpropionamide compound. Said 1,5-benzothiazepine derivative [II] is useful as an intermediate for preparing medicaments such as diltiazem hydrochloride.
一种制备 1,5-苯并
硫氮杂卓衍
生物的新工艺[II]:
其中环 A 和环 B 是取代或未取代的苯环,R3 是 H、(二低级烷基
氨基)-低级烷基或取代或未取代的
哌嗪基-低级烷基或其盐,以新型 3-(2-
氨基-取代或未取代的苯
硫基)-2-羟基-3-取代或未取代的苯基丙酰胺化合物为原料,一步法高产制备。所述 1,5-苯并
硫氮杂卓衍
生物 [II] 可用作制备
盐酸地尔硫卓等药物的中间体。