作者:Ya-Jian Hu、Jian-Hong Fan、Shaoping Li、Jing Zhao、Chuang-Chuang Li
DOI:10.1021/acs.orglett.8b02571
日期:2018.9.21
synthetic approach to construct the [6,8,6]-tricyclic core of taxezopidines A and B, which contains a synthetically challenging bridged bicyclo[5.3.1]undecane ring system bearing most of the desired functionalized groups and stereocenters, has been established. This approach features a diastereoselective type II intramolecular Diels–Alder furan reaction. The stereochemistry of the acetoxy group at the
已经建立了一种简单的合成方法来构建紫杉萜类化合物A和B的[6,8,6]-三环核心,该核心包含一个具有合成挑战性的桥联双环[5.3.1]十一烷环系统,该系统带有大多数所需的官能团和立体中心。已确立的。该方法具有非对映选择性II型分子内Diels-Alder呋喃反应。发现在亲二烯体烯基的烯丙基位置上的乙酰氧基的立体化学,例如在6a中,对于实现所需的高度非对映选择性的结果至关重要。