New 1,4-benzothiazepine diastereomers 6a,b were prepared by ring expansion of the 1,3-benzothiazine derivative 1 and from 2-benzoylmethylthio-4,5-dimethoxybenzylamine hydrochloride (5) with benzaldehyde.
通过将1,3-苯并
噻嗪衍
生物1和由2-苯甲酰基甲
硫基-4,5-二甲氧基
苄胺盐酸盐(5)与
苯甲醛一起扩环,制备新的1,4-苯并噻氮杂非对映异构体6a,b。