A Glycosylation Driven Strategy for the Synthesis of Anomerically Pure Vinyl Sulfone-modified Pent-2-enofuranoses and Hex-2-enopyranoses
作者:Tanmaya Pathak、Aditya Kumar Sanki
DOI:10.1055/s-2002-32960
日期:——
Both α- and β-anomers of vinyl sulfone-modified pent-2-enofuranosides have been synthesized for the first time by taking advantage of the formation of α- and β-methyl glycosides in almost equal ratio only from derivatives of D-xylose. The strategy was equally applicable in the synthesis of α- and β-anomers of vinyl sulfone-modified hex-2-enopyranosides where a D-glucose derivative was selected over
Synthesis of anomerically pure vinyl sulfone-modified pent-2-enofuranosides and hex-2-enopyranosides: a group of highly reactive Michael acceptors for accessing carbohydrate based synthons
作者:Aditya Kumar Sanki、Tanmaya Pathak
DOI:10.1016/s0040-4020(03)01059-7
日期:2003.9
from the derivatives of d-xylose. For the synthesis of α- and β-anomers of vinyl sulfone-modified hex-2-enopyranosides, a d-glucose derivative was selected over a d-allose derivative as the starting material because the former almost exclusively produced the required methyl pyranosides whereas the latter produced a mixture. All sulfides were converted to vinyl sulfone-modified carbohydrates by the sequential