作者:Cyril Cook、Xavier Guinchard、Frédéric Liron、Emmanuel Roulland
DOI:10.1021/ol902829e
日期:2010.2.19
The first total synthesis of the naturally occurring enantiomer of exiguolide ((−)-1) has been completed. This very convergent synthesis features the following as main steps: (i) a Trost’s ruthenium-catalyzed ene−yne cross-coupling reaction (this complex transformation allows the challenging control of the C5−C28 double bond geometry along with the stereoselective construction of the tetrahydropyran
Exiguolide((-)- 1)天然存在的对映异构体的第一个全合成反应已经完成。这种高度趋同的合成主要步骤如下:(i)Trost的钌催化的烯-炔交叉偶联反应(这种复杂的转化过程使得对C5-C28双键几何结构的挑战性控制以及四氢吡喃的立体选择性结构成为可能。环A)和(ii)非常有效的一锅,两步立体选择性共轭烯丙醇取代反应,可控制C15立体异构中心。