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
据报道,最近从整株植物Isodon excisus中分离出的成分的合成和立体化学证实。对映选择性催化硼介导的α-溴代酮还原被用于关键的合成转化中。本文所述的方法还用于合成天然产物的对映异构体和几种衍生物。另外,在半胱天冬酶诱导测定中评估了化合物的抑制活性。发现该天然产物没有活性,但是一些衍生物具有中等抑制活性(EC 50 <1μM)。