作者:Stephen G. Davies、Ai M. Fletcher、James A. Lee、Thomas J. A. Lorkin、Paul M. Roberts、James E. Thomson
DOI:10.1021/ol4007508
日期:2013.4.19
high-yielding total asymmetric synthesis of (−)-martinellic acid is reported. The conjugate addition of lithium (R)-N-allyl-N-(α-methyl-4-methoxybenzyl)amide to tert-butyl (E)-3-[2′-(N,N-diallylamino)-5′-bromophenyl]propenoate and alkylation of the resultant β-amino ester have been used as the key steps to install the C(9b) and C(3a) stereogenic centers, respectively, and a highly diastereoselective
据报道,高产的(-)-马来酸全不对称合成。(R)-N-烯丙基-N-(α-甲基-4-甲氧基苄基)酰胺共轭加成到叔丁基(E)-3- [2'-(N,N-二烯丙基氨基)-5'-溴化苯基]丙酸酯和所得β-氨基酯的烷基化已分别用作安装C(9b)和C(3a)立体异构中心的关键步骤,然后使用高度非对映选择性的Wittig反应/分子内迈克尔加成在此三环分子体系结构中创建C(4)立体中心。