作者:Steven D. Bull、Stephen G. Davies、Peter M. Kelly、Massimo Gianotti、Andrew D. Smith
DOI:10.1039/b106389h
日期:2001.11.29
β-Amino esters derived from the stereoselective conjugate addition of homochiral lithium N-benzyl-N-α-methyl-4-methoxybenzylamide to α,β-unsaturated esters may be orthogonally mono-N-deprotected under either oxidative or acid-promoted reaction conditions. Further oxidative deprotection affords β-amino acids or β-lactams.
在氧化或酸促进反应条件下,可将同手性 N-苄基-N-δ-甲基-4-甲氧基苄酰胺锂与δ,δ-不饱和酯进行立体选择性共轭加成而得到的δ-氨基酯进行正交单-N-脱保护。进一步氧化脱保护可得到δ-氨基酸或δ-内酰胺。