A Convenient Route to Enantiopure 3-Aryl-2,3-diaminopropanoic Acids by Diastereoselective Mannich Reaction of Camphor-Based Tricyclic Iminolactone with Imines
作者:Huan-Huan Zhang、Xiu-Qin Hu、Xiao Wang、Yong-Chun Luo、Peng-Fei Xu
DOI:10.1021/jo8001408
日期:2008.5.1
A novel and convenient route to the asymmetric synthesis of 2,3-diamino acids via Mannich reaction of iminolactones 1a and 1b with N-protected imines has been achieved in good yields (up to 95%) and high diastereoselectivity (dr: >99:1). Hydrolysis of the Mannich adducts under acidic conditions furnished the desired 3-aryl-2,3-diaminopropanoic acids in good yields (up to 85%) with excellent enantiomeric
通过亚氨基内酯1a和1b与N保护的亚胺的曼尼希反应,实现新颖,便捷的不对称合成2,3-二氨基酸的方法,产率高(高达95%),非对映选择性高(dr:> 99: 1)。曼尼希加合物在酸性条件下的水解提供了所需的3-芳基-2,3-二氨基丙酸,收率高(高达85%),对映体过量(99%ee)。