Cystine derivatives of the formula and pharmaceutically acceptable salts thereof are provided
I: R= tosyl or benzyloxycarbonyl
They have expectorant, antitussive and respiratory tract fluid fluidifying activity. Pharmaceutical preparations containing them are claimed. They are prepared by reaction of
with bromhexine.
提供了公式I中的半胱
氨酸衍
生物及其药学上可接受的盐:
R=对
甲苯磺酰基或苄氧羰基
它们具有祛痰、止咳和液化呼吸道液体的活性。声明了含有它们的药物制剂。它们是通过与
溴己新反应制备的。