Enantioselective Synthesis of 8-<i>epi</i>-Xanthatin and Biological Evaluation of Xanthanolides and Their Derivatives
作者:Hiromasa Yokoe、Kentaro Noboru、Yuki Manabe、Masahiro Yoshida、Hirofumi Shibata、Kozo Shishido
DOI:10.1248/cpb.c12-00519
日期:——
An enantioselective synthesis of 8-epi-xanthatin (9) has been accomplished starting from the bicyclic lactone 3, which has been used for the synthesis of other xanthanolides, sundiversifolide (4) and diversifolide (5), through a synthetic route without the use of a selenium species. Additionally we have evaluated antimicrobial activities of five natural xanthanolides and their derivatives. Although
从双环内酯3开始完成对映体8-表皮-黄嘌呤(9)的对映选择性合成,该双环内酯3已通过不使用的合成路线用于合成其他黄药内酯,多酚(4)和多酚(5)。硒物种。此外,我们还评估了五种天然黄原酸及其衍生物的抗菌活性。尽管合成的黄嘌呤内酯对耐甲氧西林的金黄色葡萄球菌(MRSA)没有任何活性,但某些合成中间体确实表现出中等的抗菌活性。