Synthesis, stereochemistry confirmation and biological activity evaluation of a constituent from Isodon excisus
作者:Xuechao Xing、Pei Ho、Geoffroy Bourquin、Li-An Yeh、Gregory D Cuny
DOI:10.1016/j.tet.2003.10.025
日期:2003.12
A synthesis and stereochemistry confirmation of a constituent recently isolated from the whole plant Isodon excisus is reported. An enantioselective catalytic boron-mediated reduction of an α-bromoketone was utilized in the key synthetic transformation. The methodology described herein was also used for the synthesis of the natural product's enantiomer and several derivatives. In addition, the compounds