A short, versatile chemical synthesis of l- and d-amino acids stereoselectively labelled solely in the beta position
作者:Kreingkrai Lowpetch、Douglas W. Young
DOI:10.1039/b508196c
日期:——
L- and D-Amino acids which are stereoselectivelylabelled solely either in the 3-pro-R or in the 3-pro-S-positions have been prepared by a relatively short chemicalsynthesis in ee of 81 to 86%. This involves Sharpless' aminohydroxylation and cyclisation with inversion of stereochemistry at C-2 to give the stereoselectivelylabelled D- and L-aziridines and 10a and 10b, and 8a and 8b. These have previously
The synthesis of (6R)-[6-2H]- and (6S)-[6-2H]5-enolpyruvylshikimate-3-phosphate
作者:Shankar Balasubramanian、Chris Abell
DOI:10.1016/s0040-4039(00)92131-2
日期:1991.2
(6R)-[6-2H]- and (6S)-[6-2H]-enolpyruvylshikimate-3-phosphate have been synthesised for the kinetic analysis of the chorismate synthase reaction. The synthesis uses purified shikimate kinase and EPSP synthase for enantiospecific biotransformations and also clarifies the stereochemical course of the Diels Alder reaction in the synthesis of shikimic acid.