Total Synthesis of Thaxtomin A and Its Stereoisomers and Findings of Their Biological Activities
作者:Hongbo Zhang、Xin Ning、Hang Hang、Xuyan Ru、Haichen Li、Yonghong Li、Lizhong Wang、Xiao Zhang、Shujing Yu、Yuanyuan Qiao、Xin Wang、Peng George Wang
DOI:10.1021/ol4026556
日期:2013.11.15
The first and facile total synthesis of thaxtomin A and its three stereoisomers has been achieved. The synthetic approach involves intramolecular nucleophilic cyclization of an amide toward a ketoamide group to produce a C-hydroxydiketopiperazine scaffold. The most amazing discovery was that each of the four stereoisomers of TA exhibits different phytotoxic, fungicidal, and antiviral activities.
已经成功实现了纤溶酶A及其三种立体异构体的首次合成。合成方法涉及酰胺向酮酰胺基团的分子内亲核环化,以产生C-羟基二酮哌嗪骨架。最令人惊讶的发现是,TA的四种立体异构体中的每一种均表现出不同的植物毒,杀真菌和抗病毒活性。