申请人:Boehringer Mannheim GmbH
公开号:US05037828A1
公开(公告)日:1991-08-06
The present invention provides compounds of the general formula: ##STR1## wherein R.sub.1 is a hydroxyl group or a methoxy radical, R.sub.2 is a hydrogen atom or a hyroxyl group and R.sub.3 is a hydrogen atom or a hydroxyl group, with the proviso that R.sub.2 and R.sub.3 are not simultaneously hydrogen atoms when R.sub.1 is a methoxy radical; and the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these compounds and pharmaceutical compositions containing them.
本发明提供了一类通式为##STR1##的化合物,其中R1是羟基或甲氧基,R2是氢原子或羟基,R3是氢原子或羟基,但条件是当R1为甲氧基时,R2和R3不同时为氢原子;以及这些化合物的药学上可接受的盐。本发明还提供了制备这些化合物的方法和含有这些化合物的药物组合物。