作者:Robert M. Williams、Jianhua Cao、Hidekazu Tsujishima、Rhona J. Cox
DOI:10.1021/ja036713+
日期:2003.10.1
The first total synthesis of paraherquamide A, a potent anthelmintic agent isolated from various Penicillium sp. with promising activity against drug-resistant intestinal parasites, is reported. Key steps in this asymmetric, stereocontrolled total synthesis include a new enantioselective synthesis of alpha-alkylated-beta-hydroxyproline derivatives to access the substituted proline nucleus and a highly
paraherquamide A 的第一个全合成,一种从各种青霉菌中分离出来的强效驱虫剂。据报道,它具有对抗耐药性肠道寄生虫的有希望的活性。这种不对称、立体控制的全合成的关键步骤包括新的对映选择性合成 α-烷基化-β-羟脯氨酸衍生物以进入取代的脯氨酸核和高度非对映选择性的分子内 S(N)2' 环化以生成核心双环 [2.2.2 ]重氮辛烷环系。