Synthetic Strategies Directed Towards 5a-Carbahexopyranoses and Derivatives Based on 6-endo-trig Radical Cyclizations
作者:Ana M. Gómez、Clara Uriel、Maria D. Company、J. Cristóbal López
DOI:10.1002/ejoc.201100956
日期:2011.12
Several synthetic strategies directed towards 5a-carbahexopyranoses and based on 6-endo-trig radical cyclization of unsaturated carbohydrate derivatives have been devised. Three elements for regiocontrol to optimize the 6-endo/5-exo ratio have been incorporated, and their efficiencies in directing 6-endo cyclizations have been evaluated. These elements – namely: i) the incorporation of a substituent