A concise synthesis of paraconic acids: (−)-methylenolactocin and (−)-phaseolinic acid
作者:Rodney A. Fernandes、Asim K. Chowdhury
DOI:10.1016/j.tetasy.2011.05.007
日期:2011.5
A concise synthesis of (−)-methylenolactocin and (−)-phaseolinic acid, the common members of the paraconic acids, is described. The synthesis is based on regioselective asymmetric dihydroxylation and the orthoester Johnson–Claisen rearrangement of allyl alcohol with a vicinal diol functionality as the key steps. The synthesis was completed in 10 steps with overall yields of 4.1% for (−)-methylenolactocin
描述了简洁的合成(-)-甲基烯醇内酯和(-)-菜豆酸,这是对圆锥体酸的常见成员。合成基于区域选择性不对称二羟基化和烯丙醇的原酸酯Johnson-Claisen重排以及关键的邻二醇功能。分十步完成合成,(-)-甲基烯醇内酯的总产率为4.1%,(-)-菜豆酸的总产率为4.3%。