申请人:Ciba-Geigy Corporation
公开号:US05248693A1
公开(公告)日:1993-09-28
The invention relates to compounds of formula I ##STR1## wherein R is hydrogen or C.sub.1 -C.sub.7 alkyl, or wherein R is the structural element-alk-R.sub.1 in which alk is C.sub.1 -C.sub.7 alkylene, C.sub.2 -C.sub.7 alkylidene or C.sub.3 -C.sub.6 cycloalkylidene and R.sub.1 is hydroxy, C.sub.1 -C.sub.7 alkoxy, phenyl-C.sub.1 -C.sub.7 alkoxy or C.sub.2 -C.sub.7 alkanoyloxy; in free form or in the form of a salt; processes for their preparation, their use, and also pharmaceutical compositions comprising a compound of formula I in free form or in the form of a pharmaceutically acceptable salt.
本发明涉及式I的化合物:##STR1## 其中R是氢或C.sub.1-C.sub.7烷基,或其中R是结构元素-烷基-R.sub.1,其中烷基是C.sub.1-C.sub.7亚烷基,C.sub.2-C.sub.7亚烷基或C.sub.3-C.sub.6环烷基亚烷基,R.sub.1是羟基,C.sub.1-C.sub.7烷氧基,苯基-C.sub.1-C.sub.7烷氧基或C.sub.2-C.sub.7脂肪酰氧基;以自由形式或盐形式存在;其制备方法、它们的用途,以及包括式I化合物的药物组合物,以自由形式或作为药学上可接受的盐形式的化合物。