Conversion of one hydroxy group in a diol to a phenyl ether with triphenylbismuth diacetate, a new glycol reaction showing strong axial preference in six-membered rings
Efficient Sialylation with Phenyltrifluoroacetimidates as Leaving Groups
作者:Sutang Cai、Biao Yu
DOI:10.1021/ol0353161
日期:2003.10.1
[GRAPHICS]Sialylation with N-phenyltrifluoroacetimidates as leaving groups and a catalytic amount of TMSOTf as promoter compares favorably with the previous protocols for direct sialylation and expand in essence the scope of the Schmidt glycosylation reaction.
Regioselective removal of the anomeric O-benzyl from differentially protected carbohydrates
作者:Nigel Kevin Jalsa
DOI:10.1016/j.tetlet.2011.09.130
日期:2011.12
A mild, regioselective deprotection of the anomeric O-benzyl from multi-functionally protected carbohydrates via catalytic transfer hydrogenation is described. The protocol is tolerant of O-benzyl and O-benzylidene protections at non-anomeric positions, groups which are normally labile under typical hydrogenolysis conditions. (C) 2011 Elsevier Ltd. All rights reserved.
DAVID, S.;THIEFFRY, A., J. ORG. CHEM., 1983, 48, N 4, 441-447