Novel thioketene derivative of the formula:
wherein R1 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;
R2 and R3 are each a lower alkyl group or combine together to form a group of the formula: =CH2CH2- or -CH=CH-;
R4 is hydrogen atom, a lower alkyl group or a (lower alkoxyl carbonyl group;
A is a group of the formula: -(CH2)n- or -CH(COOR5)-;
n is a integer of 0, 1 or 2 and
R5 is a lower alkyl group; compounds of the formula
wherein R1 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;
R2 and R3 are each a lower alkyl group or combine together to form a group of the formula: -CH2CH2- or -CH=CH-;
R6 is a lower alkyl group;
R7 is hydrogen atom or a group of the formula: -A'-CH2COOR8;
A' is a group of the formula: -CH2- or -CH(COORS)-; and R6 and R8 are each a lower alkyl group; and processes for their preparation. These compounds are useful as agents for treating and protecting various liver diseases.
式中的新型
硫代酮衍
生物:
其中 R1 是氢原子、烷基、低级烯基、苯基或式中的一个基团:-B-Y;
Y 是含氮的单环杂环基团或取代或未取代的苯基;
B 是直链或支链低级亚烷基;
R2 和 R3 各为低级烷基,或结合在一起形成式中:= - 或 -CH=CH- 的基团;
R4 是氢原子、低级烷基或低级羰基;
A 是式中的一个基团:-(
CH2)n-或-CH(COOR5)-;
n 是 0、1 或 2 的整数,且
R5 是低级烷基; 式中的化合物
其中 R1 是氢原子、烷基、低级烯基、苯基或式中的一个基团:-B-Y;
Y 是含氮的单环杂环基团或取代或未取代的苯基;
B 是直链或支链低级亚烷基;
R2 和 R3 各为一个低级烷基或结合在一起形成一个式中的基团:- -或-CH=CH-;
R6 是低级烷基
R7 是氢原子或式中的一个基团:-A'- COOR8;
A'是式中的一个基团:- -或-CH(COORS)-;以及 R6 和 R8 各为低级烷基;及其制备方法。这些化合物可用作治疗和保护各种肝脏疾病的药物。