D-青霉胺 、 2,4-二氯苯甲醛 在
甲醇 、 二甲基亚砜 作用下,
以
甲醇 、 水 为溶剂,
反应 16.0h,
以to give the title acid in a yield of 5.82 g (95%), m.p.: 150°-151° C., [α]D20 =+353° (c=0.45, dimethylsulphoxide)的产率得到2-(2,4-dichlorophenyl)-5,5-dimethylthiazolidine-4(S)-carboxylic acid
参考文献:
名称:
Thiazolidinecarboxylic acid derivatives and treatment of liver diseases
Thiazolidinecarboxylic acid derivatives and treatment of liver diseases
申请人:Biogal Gyogyszergyar
公开号:US04775675A1
公开(公告)日:1988-10-04
The invention relates to novel thiazolidine-4(S)-carboxylic acid derivatives of the general formula (I) ##STR1## wherein R.sup.1 stands for an optionally substituted furyl, pyrrolyl, thienyl, benzofuryl, benzopyrrolyl, benzothienyl, phenyl, pyridyl, quinolinyl, isoquinolinyl or indanyl group or a C.sub.1-4 alkyl or C.sub.2-4 alkenyl group optionally substituted by a hydroxyl, carboxyl or halogen fenoxy group, stands for hydrogen, an alkaline metal or an alkaline earth metal atom or an optionally substituted C.sub.1-4 alkyl group or aryl group; R.sup.3 represents hydrogen or an optionally substituted C.sub.1-4 alkyl or acyl group or aryl group as well as their salts. Further on, the invention relates to pharmaceutical preparations containing these compounds and to a process for preparing these compounds and preparations. The compounds of the invention are useful for treating or preventing liver damages of either natural or experimental origin.