Reactions of 3-carboxymethylrhodanine (1) with aldehydes (2a-u) afforded stereoselectively the 5-monoalkymethylidene-3-carboxymethylrhodanines (3a-u). The configuration of the 5-monoalkylmethylidene-3-carboxymethylrhodanine (3k) were examined by X-ray structure analysis and confirmed to be Z-configuration. The stereoselective reaction path was discussed. Several 5-dialkylmethylidene-3-carboxymethylrhodanines (15a-f) and alkyl-amino derivatives of 3-carboxymethylrhodanines (18a-o) were also prepared.These products were evaluated for aldose reductase-inhibitory potency and half of them exhibited valuable inhibitory potency.
Rhodanine derivative, process for preparing the same and pharmaceutical composition containing the same
申请人:KAKEN PHARMACEUTICAL CO., LTD.
公开号:EP0291007A1
公开(公告)日:1988-11-17
A rhodanine derivative having the formula (I):
wherein R is a branched alkyl group having 5 to 7 carbon atoms or a cycloalkylalkyl group having 5 to 7 carbon atoms which may be substituted by a halogen atom; or a nontoxic salt thereof. The rhodanine derivatives (I) and their nontoxic salts have excellent aldose reductase inhibiting activity and low toxicity, and therefore can be used as therapeutic agent for diabetic complications.