申请人:Santen Pharmaceutical Co., Ltd.
公开号:US05202342A1
公开(公告)日:1993-04-13
This invention relates to the compounds of the formula [I] and salts thereof, which are useful for treatment of liver disorders, ##STR1## wherein X is oxygen or sulfur; R.sup.1 is lower alkyl which can be substituted by hydroxy, carboxy or lower alkoxycarbonyl; R.sup.2 is hydrogen, lower alkanoyl, phenyl lower alkanoyl or phenyl lower alkyl, and said phenyl ring of phenyl lower alkanoyl or phenyl lower alkyl can be substituted by lower alkyl or lower alkoxy; and A is straight or branched C.sub.1 -C.sub.6 alkylene.
这项发明涉及公式[I]的化合物及其盐,可用于治疗肝脏疾病,其中X为氧或硫;R.sup.1为可被羟基、羧基或较低的烷氧羰基取代的较低烷基;R.sup.2为氢、较低的烷酰基、苯基较低的烷酰基或苯基较低的烷基,且所述苯基环的苯基较低的烷酰基或苯基较低的烷基可被较低的烷基或较低的烷氧基取代;A为直链或支链的C.sub.1 -C.sub.6烷基。