Asymmetric cycloadditions of aldehydes to stabilised azomethine ylids: Enantiocontrolled construction of β-hydroxy-α-amino acid derivatives
摘要:
In the absence of added dipolarophile, chiral stabilised azomethine ylids derived from the reaction of 5-(S)-phenylmorpholin-2-one (1) with aldehydes undergo efficient and highly enantiocontrolled cycloaddition with a second molecule of aldehyde to furnish products which may be converted into beta-hydroxy-alpha-amino acids.
Asymmetric cycloadditions of aldehydes to stabilised azomethine ylids: Enantiocontrolled construction of β-hydroxy-α-amino acid derivatives
摘要:
In the absence of added dipolarophile, chiral stabilised azomethine ylids derived from the reaction of 5-(S)-phenylmorpholin-2-one (1) with aldehydes undergo efficient and highly enantiocontrolled cycloaddition with a second molecule of aldehyde to furnish products which may be converted into beta-hydroxy-alpha-amino acids.
Application of enantiopure templated azomethine ylids to β-hydroxy-α-amino acid synthesis
作者:David Alker、Giles Hamblett、Laurence M. Harwood、Sarah M. Robertson、David J. Watkin、C. Eleri Williams
DOI:10.1016/s0040-4020(98)00302-0
日期:1998.5
Chiral stabilised azomethine ylids derived from the reaction of (5S)-5-phenylmorpholin-2-one (1) with aldehydes undergo efficient and highly diastereocontrolled cycloaddition with a second molecule of aldehyde to furnish products (2) which may be converted into enantiomerically pure three (2S,3R) beta-hydroxy-alpha-amino acids (3) in excellent yield, (C) 1998 Elsevier Science Ltd. All rights reserved.