An approach toward the synthesis of maoecrystal V is described. The synthetic strategy for this approach was designed to address unique challenges posed by the strained tetrahydrofuran ring at the center of the target structure.
Enantioselective Synthesis of (−)-Maoecrystal V by Enantiodetermining C–H Functionalization
作者:Ping Lu、Artur Mailyan、Zhenhua Gu、David M. Guptill、Hengbin Wang、Huw M. L. Davies、Armen Zakarian
DOI:10.1021/ja510573v
日期:2014.12.24
evolution of a program directed at the enantioselective total synthesis of maoecrystal V, a highly modified ent-kauranoid, is described. An early stage chiral auxiliary-directed asymmetric C–H functionalization for the construction of a key benzofuran intermediate enabled the first asymmetric synthesis of the natural enantiomer of maoecrystal V, confirming the assigned stereochemistry. A divergent course
描述了针对 maoecrystal V(一种高度修饰的 ent-kauranoid)的对映选择性全合成的程序的演变。用于构建关键苯并呋喃中间体的早期手性辅助导向的不对称 C-H 官能化使 maoecrystal V 的天然对映异构体的首次不对称合成成为可能,证实了指定的立体化学。依赖于亲二烯体性质的中心分子内 Diels-Alder 反应的发散过程最初导致了 maoecrystal V 的一种意外且以前未知的异构体的发展,我们将其命名为 maoecrystal ZG。鉴于已报道的 maoecrystal V 的选择性和有效的细胞毒活性,还研究了 maoecrystal ZG 的细胞毒特性。
Studies toward the Synthesis of Maoecrystal V
作者:Zhenhua Gu、Armen Zakarian
DOI:10.1021/ol1031238
日期:2011.3.4
An approach toward the synthesis of maoecrystal V is described. The synthetic strategy for this approach was designed to address unique challenges posed by the strained tetrahydrofuran ring at the center of the target structure.