Enantioselective synthesis of 3-hydroxypiperidin-2-ones
作者:Gary Gibbs、Martin J. Hateley、Lee McLaren、Matthew Welham、Christine L. Willis
DOI:10.1016/s0040-4039(99)80114-2
日期:1999.1
An efficient synthesis of (S)- and (R)-3-hydroxypiperidin-2-ones from methyl 5-nitro-2-oxopentanoate is described. A one-pot enzyme catalysed hydrolysis of the ester and reduction of the ketone gave enantiopure 2-hydroxy-5-nitropentanoic acids which on esterification, catalytichydrogenationover a platinum(IV) oxide catalyst and intramolecular cyclisation gave the target compounds in 93% overall yield