作者:Jin-Mo Ku、Byeong-Seon Jeong、Sang-sup Jew、Hyeung-geun Park
DOI:10.1021/jo071162h
日期:2007.10.1
An enantioselective synthetic method for (−)-cis-clavicipitic acid (1) was reported. 1 was obtained in 10 steps (99% ee and 20% overall yield) from 1H-indole-3-carboxylic acid methyl ester (9) via asymmetric phase-transfer catalytic alkylation and diastereoselective Pd(II)-catalyzed intramolecular aminocyclization as key steps.
报道了对-(-)-顺式-克拉维酸(1)的对映选择性合成方法。1在10步(99%ee的和20%的总收率),从1中得到ħ -吲哚-3-羧酸甲酯(9经由不对称相转移催化的烷基化和非对映选择性钯(II)催化的分子内aminocyclization作为密钥)脚步。