The selective acetylation of primary alcohols in the presence of secondary alcohols in carbohydrates
作者:Surjit S. Rana、Joseph J. Barlow、Khushi L. Matta
DOI:10.1016/s0040-4039(01)92405-0
日期:1981.1
Treatment of primary-secondary sugar diols with ethyl acetate in the presence of Woelm neutral alumina produced selectively the corresponding primary monoacetates in good yield. No di-acetate was formed in a detectable amount.
A facile synthesis of nitrophenyl oligosaccharides containing the O-α-l-fucopyranosul-( 1 → 3)-2-acetamido-2-deoxy-β-d-glucopyranosyl unit at their nonreducing end
作者:Rakesh K. Jain、Conrad F. Piskorz、Khushi L. Matta
DOI:10.1016/s0008-6215(00)90562-7
日期:1992.4
A facile approach towards the synthesis of 4-nitrophenyl O-alpha-L-fucopyranosyl-(1----3)-2-acetamido-2-deoxy-beta-D-glucopyra nos ide, 2-nitrophenyl O-alpha-L-fucopyranosyl-(1----3)-O-(2-acetamido-2-deoxy-beta-D-glucop yra nosyl)- (1----6)-2-acetamido-2-deoxy-alpha-D-galactopyranoside, 4-nitrophenyl O-alpha-L-fucopyranosyl-(1----3)-O-(2-acetamido-2-deoxy-beta-D-glucop yra nosyl)- (1----6)-alpha-D-mannopyranoside
Synthesis and utility of sulfated chromogenic carbohydrate model substrates for measuring activities of mucin-desulfating enzymes
作者:Keith Clinch、Gary B Evans、Richard H Furneaux、Phillip M Rendle、Phillippa L Rhodes、Anthony M Roberton、Douglas I Rosendale、Peter C Tyler、Damian P Wright
DOI:10.1016/s0008-6215(02)00104-0
日期:2002.6
from monosaccharide precursors by two different methods, the shorter requiring just six steps from 4-nitrophenyl 2-acetamido-2-deoxy-beta-D-glucopyranoside and giving an overall yield of 26.4%. The syntheses of 4-nitrophenyl beta-D-galactopyranoside 3-triethylammonium sulfate and 6-triethylammonium sulfate and their use in combination with beta-galactosidase as chromogenicsubstrates for detecting Bacteroides