The hetero-Diels–Alder addition of ethyl 2-nitrosoacrylate to electron-rich alkenes as a route to unnatural α-amino acids
作者:John K Gallos、Vassiliki C Sarli、Anastassia C Varvogli、Constantina Z Papadoyanni、Sofia D Papaspyrou、Nicolaos G Argyropoulos
DOI:10.1016/s0040-4039(03)00836-0
日期:2003.5
A new method for the stereoselective synthesis of nonproteinogenic a-amino acids has been developed, which involves hetero-Diels-Alder addition of ethyl 2-nitrosoacrylate to electron-rich alkenes, such as enol ethers, enamines and allylsilanes, and a further two or three step manipulation of the resulting oxazines. (C) 2003 Elsevier Science Ltd. All rights reserved.