Studies on aldose reductase inhibitors from natural products. Part III. Studies on aldose reductase inhibitors from medicinal plant of "Sinfito," Potentilla candicans, and further synthesis of their related compounds.
作者:Satoshi TERASHIMA、Mineo SHIMIZU、Hajime NAKAYAMA、Masatoshi ISHIKURA、Yutaka UEDA、Kunihiro IMAI、Akio SUZUI、Naokata MORITA
DOI:10.1248/cpb.38.2733
日期:——
For several years we have screened natural products having aldose reductase (AR) inhibitory activity. 3, 3', 4-Tri-O-methylellagic acid 4'-sulfate potassium salt (2) was isolated from a Mexican herb "Sinfito" (Potentilla candicans) as a potent AR inhibitory active constituent. 2 was more potent (IC<50>=8.0×10<-8>M) than ellagic acid, which is one of the natural inhibitors of AR. So we examined the synthesis of ellagic acid derivatives and found that the sulfate group is one of the important function.
在过去几年里,我们对具有醛糖还原酶(AR)抑制活性的天然产物进行了筛选。从一种墨西哥香草“Sinfito”(Potentilla candicans)中分离出了3, 3', 4-三-O-甲基鞣酸4'-硫酸钾盐(2),作为一种有效的AR抑制活性成分。其活性比鞣酸更强(IC<50>=8.0×10<-8>M),而鞣酸是AR的自然抑制剂之一。因此,我们研究了鞣酸衍生物的合成,并发现硫酸酯基团是一个重要的功能团。