N -Boc-2-acyl oxazolidine methodology combined with ring-closing metathesis: a new approach towards the enantioselective synthesis of α-(1-hydroxyalkyl) nitrogen heterocycles
作者:Claude Agami、François Couty、Nicolas Rabasso
DOI:10.1016/s0040-4020(01)00458-6
日期:2001.6
A synthetic methodology, based on N-Boc-2-acyloxazolidine chemistry combined with ring-closingmetathesis, allows the preparation of enantiopure piperidinic heterocycles showing a 2-(1-hydroxyalkyl) side-chain, a pattern commonly found in natural alkaloids. Synthesis of Δ-3,4-2,6-disubstituted piperidinic rings can thus be achieved with a good 2,6-cis or -trans stereocontrol, unless the substituent