Preparations of 5-alkylmethylidene-3-carboxymethylrhodanine derivatives and their aldose reductase inhibitory activity.
作者:Yoshitaka OHISHI、Teruo MUKAI、Michiko NAGAHARA、Motoyuki YAJIMA、Norio KAJIKAWA、Kazumoto MIYAHARA、Tsunehiro TAKANO
DOI:10.1248/cpb.38.1911
日期:——
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.
3-羧甲基罗丹宁(1)与醛(2a-u)反应,选择性地生成了5-单烷亚甲基-3-羧甲基罗丹宁(3a-u)。通过X射线结构分析,确认5-单烷亚甲基-3-羧甲基罗丹宁(3k)的构型为Z型。讨论了立体选择性反应途径。还合成了几种5-二烷亚甲基-3-羧甲基罗丹宁(15a-f)和3-羧甲基罗丹宁的烷基氨基衍生物(18a-o)。这些产物被评估了醛糖还原酶抑制活性,其中一半显示出了有价值的抑制活性。