申请人:Hoffmann-La Roche Inc.
公开号:US04650812A1
公开(公告)日:1987-03-17
The invention relates to compounds of the formula ##STR1## wherein R.sup.1 is hydrogen or lower alkyl, R.sup.2 is hydrogen or halogen, R.sup.3 is hydrogen or lower alkyl, R.sup.4 is hydrogen or lower alkyl, R.sup.5 is hydrogen, lower alkyl or aralkyl, X is alkylene and n is an integer from 1 to 6, enantiomers thereof, and, when R.sup.5 is hydrogen, salts thereof with pharmaceutically acceptable bases.
该发明涉及以下结构的化合物:
其中R.sup.1是氢或较低的烷基,R.sup.2是氢或卤素,R.sup.3是氢或较低的烷基,R.sup.4是氢或较低的烷基,R.sup.5是氢、较低的烷基或芳基烷基,X是烷基,n是1到6的整数,它们的对映体,以及当R.sup.5是氢时,与药用可接受的碱形成的盐。