A short enantioselective synthesis of N-Boc-α-amino acids from epoxy alcohols
作者:Marta Poch、Montserrat Alcón、Albert Moyano、Miquel A. Pericàs、Antoni Riera
DOI:10.1016/s0040-4039(00)61565-4
日期:1993.11
acids has been developed. Starting from an enantiomerically enriched epoxy alcohol the sequence involves a regioselective nucleophilic epoxide opening by diphenylmethylamine (benzhydrilamine), hydrogenolysis/protection of the aminogroup, and oxidation of the diol moiety.
A Mild, Selective, PyBOP Mediated Procedure for the Conversion of Primary Amines into Phthalimides
作者:Núria Aguilar、Albert Moyano、Miquel A. Pericàs、Antoni Riera
DOI:10.1055/s-1998-2038
日期:1998.3
Enantioselective synthesis of fully protected anti 3-amino-2-hydroxy butyrates
作者:Mireia Pastó、Albert Moyano、Miquel A. Pericàs、Antoni Riera
DOI:10.1016/0957-4166(95)00309-d
日期:1995.9
An efficient enantioselective synthesis of fully protected anti 3-amino-2hydroxybutyrates has been developed. Starting from enantiomerically enriched anti N-diphenylmethyl-3-amino-1,2-butanediol, after a change in the nitrogen protecting group, the primary alcohol was protected by regioselective reduction of the corresponding p-methoxybenzylidene acetal. Formation of the oxazolidine and deprotection of the primary alcohol followed by oxidation afforded protected alpha-hydroxy-beta-amino acids in good yield. Since the source of asymmetry is a catalytic Sharpless epoxidation, both enantiomeric series are available and the methodology developed here is expected to be of broad applicability.