Studies of platelet activating factor (PAF) antagonists from microbial products. I. Bisdethiobis(methylthio)gliotoxin and its derivatives.
作者:MASANORI OKAMOTO、KEIZO YOSHIDA、ITSUO UCHIDA、MOTOAKI NISHIKAWA、MASANOBU KOHSAKA、HATSUO AOKI
DOI:10.1248/cpb.34.340
日期:——
A platelet activating factor (PAF) antagonist, designated as FR-49175, was isolated from fermentation products of Penicillium terlikowskii and identified as bisdethiobis(methylthio)-gliotoxin (1). The IC50 value of this compound for PAF-induced rabbit platelet aggregation was 8.4 μM.Some derivatives of bisdethiobis(methylthio)gliotoxin (1) were synthesized and their inhibitory activities of PAF-induced platelet aggregation were examined. Among these compounds, 5a, 6-anhydrobisdethio-3, 10a-bis(methylthio)gliotoxin (8) showed the most potent PAF inhibitory activity (IC50; 4.4 μM).
一种血小板活化因子(PAF)拮抗剂被命名为 FR-49175,它是从青霉 terlikowskii 的发酵产物中分离出来的,并被鉴定为双二硫双(甲硫基)胶质毒素(1)。该化合物对 PAF 诱导的兔血小板聚集的 IC50 值为 8.4 μM。合成了一些双二硫双(甲硫基)胶质毒素(1)的衍生物,并考察了它们对 PAF 诱导的血小板聚集的抑制活性。在这些化合物中,5a, 6-脱水双二硫代-3, 10a-双(甲硫基)鬼臼毒素(8)显示出最强的 PAF 抑制活性(IC50;4.4 μM)。