Racemisation-free esterification of 2-nitrohenylsulphenyl-protected amino-acids by dicyclohexylcarbodi-imide-4-dimethylaminopyridine
作者:Bernhard Neises、Thomas Andries、Wolfgang Steglich
DOI:10.1039/c39820001132
日期:——
Racemisation during esterification of N-protected amino-acids by dicyclohexylcarbodi-imide–4-dimethylaminopyridine (DCC–DMAP) can be avoided by use of the 2-nitrophenylsulphenyl(Nps) protecting group.
通过使用2-硝基苯基磺苯基(Nps)保护基,可以避免二环己基碳二亚胺-4-甲基二甲基吡啶(DCC-DMAP)酯化N-保护的氨基酸时发生外消旋作用。