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.
Cyclic sulphamidite analogues of penicillanic acid
作者:Bill K. Cuthbert、Gordon Lowe
DOI:10.1039/c39890001702
日期:——
Diastereoisomeric analogues of penicillanicacid have been synthesised in which the β-lactam ring is replaced with the 2-oxo-1,2,3-oxathiazolidine (cyclic sulphamidite) ring; ring fusion greatly increases the chemical reactivity of the 2-oxo-1,2,3-oxathiazolidine ring to nucleophilic attack.