82805-19-4Relevant academic research and scientific papers
Synthesis of Branched-Chain Oligosaccharides in Sarsasapogenins by Dehydrative Glycosylation
Koto, Shinkiti,Morishima, Naohiko,Uchino, Masaharu,Fukuda, Misa,Yamazaki, Masayo,Zen, Shonosuke
, p. 3943 - 3950 (2007/10/02)
The branched-chain oligosaccharides, 6-O-(β-D-glucopyranosyl)-4-O-(α-L-rhamnopyranosyl)-D-glucopyranose, and 2,6-di-O-(β-D-glucopyranosyl)-4-O-(α-L-rhamnopyranosyl)-D-glucopyranose, which compose sarsasapogenins, as well as the structurally related 2-O-(β
A STEREOSELECTIVE α-GLUCOSYLATION BY USE OF A MIXTURE OF 4-NITROBENZENESULFONYL CHLORIDE, SILVER TRIFLUOROMETHANESULFONATE, N,N-DIMETHYLACETAMIDE, AND TRIETHYLAMINE
Koto, Shinkiti,Morishima, Naohiko,Owa, Miho,Zen, Shonosuke
, p. 73 - 84 (2007/10/02)
Stereoselective α-glucosylation of partially protected carbohydrates with 2,3,4,6-tetra-O-benzyl-α-D-glucopyranose in dichloromethane, in the presence of a quaternary mixture of 4-nitrobenzenesulfonyl chloride, silver trifluoromethanesulfonate, N,N-dimethylacetamide, and triethylamine gave O-α-D-glucopyranosyl-(1->4)- and -(1->6)-2-acetamido-2-deoxy-D-glucopyranose (N-acetylmaltosamine and N-acetylisomaltosamine).A step-by-step synthesis of O-α-D-glucopyranosyl-(1->4)-O-6)>-D-glucopyranose is described.
DEHYDRATIVE α-GLUCOSYLATION USING A MIXTURE OF p-NITROBENZENESULFONYL CHLORIDE, SILVER TRIFLUOROMETHANESULFONATE, N,N-DIMETHYLACETAMIDE, AND TRIETHYLAMINE
Morishima, Naohiko,Koto, Shinkiti,Zen, Shonosuke
, p. 1039 - 1040 (2007/10/02)
Stereoselective synthesis of α-linked di- and trisaccharides is performed by the one-stage glucosylation using 2,3,4,6-tetra-O-benzyl-α-D-glucopyranose and a mixture of p-nitrobenzenesulfonyl chloride, silver trifluoromethanesulfonate, N,N-dimethylacetami
