First total synthesis and antileishmanial activity of (Z)-16-methyl-11-heptadecenoic acid, a new marine fatty acid from the sponge Dragmaxia undata
作者:Néstor M. Carballeira、Nashbly Montano、Gabriel A. Cintrón、Carmary Márquez、Celia Fernández Rubio、Christopher Fernández Prada、Rafael Balaña-Fouce
DOI:10.1016/j.chemphyslip.2010.11.006
日期:2011.2
The first total synthesis for the (Z)-16-methyl-11-heptadecenoic acid, a novel fatty acid from the sponge Dragmaxia undata, was accomplished in seven steps and in a 44% overall yield. The use of (trimethylsilyl)acetylene was key in the synthesis. Based on a previous developed strategy in our laboratory the best synthetic route towards the title compound was first acetylide coupling of (trimethylsilyl)acetylene
( Z ) -16-甲基-11-十七碳烯酸是一种来自海绵龙蒿属植物的新型脂肪酸,其首次全合成分七个步骤完成,总产率为 44%。(三甲基甲硅烷基)乙炔的使用是合成的关键。基于我们实验室先前开发的策略,标题化合物的最佳合成路线是首先将(三甲基甲硅烷基)乙炔乙炔偶联到长链保护的 10-溴-1-癸醇,然后再将乙炔偶联到短链1-溴-4-甲基戊烷,这导致更高的产率。还首次提供了这种最近发现的脂肪酸和顺式脂肪酸的完整光谱数据建立了天然酸的双键立体化学。标题化合物显示出对杜氏利什曼原虫(IC 50 = 165.5 ± 23.4 μM) 的抗原生动物活性,并以 IC 50 = 62.3 ± 0.7 μM抑制利什曼原虫 DNA 拓扑异构酶 IB 酶 (LdTopIB) 。