Novel thioketene derivatives of the formula: ##STR1## wherein R.sup.1 is hydrogen atom, an alkyl group, a lower alkenyl group, a phenyl group or a group of the formula: --B--Y; Y is a nitrogen-containing monocyclic heterocyclic group or a substituted or unsubstituted phenyl group; B is a straight or branched lower alkylene group; R.sup.2 and R.sup.3 are both a lower alkyl group or are combined together to form a group of the formula: --CH.sub.2 CH.sub.2 -- or --CH.dbd.CH--; R.sup.4 is hydrogen atom, a lower alkyl group or a (lower alkoxy)carbonyl group; A is a group of the formula: --(CH.sub.2).sub.n -- or --CH(COOR.sup.5)--; n is an integer of 0, 1 or 2 and R.sup.5 is a lower alkyl group, are disclosed. The compound (I) is useful as an agent for treating and protecting various liver diseases.
新型的
硫酮烯衍
生物的
化学式如下:##STR1## 其中R.sup.1是氢原子,烷基基团,较低的烯基基团,苯基或者
化学式为:--B--Y的基团;Y是含氮的单环杂环基团或者取代或未取代的苯基;B是直链或支链的较低烷基烯基基团;R.sup.2和R.sup.3都是较低烷基基团或者结合在一起形成
化学式为:--CH.sub.2 CH.sub.2 --或者--CH.dbd.CH--的基团;R.sup.4是氢原子,较低烷基基团或者(较低烷氧基)羰基基团;A是
化学式为:--(CH.sub.2).sub.n --或者--CH(COOR.sup.5)--的基团;n是0、1或2的整数,R.sup.5是较低烷基基团。该化合物(I)可用作治疗和保护各种肝脏疾病的药剂。