作者:Chong-Dao Lu、Armen Zakarian
DOI:10.1021/ol071266e
日期:2007.8.1
A stereoselective synthesis of the tricyclic B,C,D-dispiroketal fragment of pinnatoxins is described. Both products of an efficient enzymatic resolution reaction are used to set the stereochemistry of C12 and C23, which have opposite configuration. The configuration of the ketal centers is established upon an optimized thermodynamically controlled spiroketalization.
描述了pinnatoxins的三环B,C,D-二螺酮体片段的立体选择性合成。有效的酶拆分反应的两种产物均用于设定具有相反构型的C12和C23的立体化学。缩酮中心的构型是基于优化的热力学控制的螺酮缩合反应而建立的。