Total Synthesis, Stereochemical Assignment, and Biological Activity of Chamuvarinin and Structural Analogues
作者:Gordon J. Florence、Joanne C. Morris、Ross G. Murray、Raghava R. Vanga、Jonathan D. Osler、Terry K. Smith
DOI:10.1002/chem.201204527
日期:2013.6.17
butenolide. The inherent flexibility of our coupling strategy led to a streamlined synthesis with 17 steps in the longest sequence (2.2 % overall yield), in which the key bond couplings are reversed. In addition, a series of structural analogues of chamuvarinin have been prepared and screened for activity against HeLa cancer cell lines and both the bloodstream and insect forms of Trypanosoma brucei
(+)-香豆素的高度立体控制的合成已在20个步骤中以1.5%的总产率完成。关键的片段偶联反应是将炔烃8添加到醛7中(在Felkin–Anh的控制下),然后进行两步活化/环化反应以封闭C20–C23 2,5–顺式取代的四氢呋喃环和在C8–C9处的Julia–Kocienski烯烃基引入末端丁烯内酯。我们偶联策略的固有灵活性导致了最长序列中17个步骤的精简合成(总产率为2.2%),其中键键偶联被颠倒了。此外,已经制备了一系列沙穆伐林的结构类似物,并筛选了针对HeLa癌细胞系以及布鲁氏锥虫(Trypanosoma brucei)的血流和昆虫形式的活性,布鲁氏锥虫是造成非洲昏睡病的寄生虫。