Glycosylation of 5-phenyl-1,3,4-oxadiazole-2-thiol with α-D-glucopyranosyl chloride under phase transfer conditions
作者:V. O. Kur’yanov、S. A. Kotlar、U. S. Priskoka、T. A. Chupakhina、V. Ya. Chirva
DOI:10.1134/s1068162006050098
日期:2006.9
5-Phenyl- 1,3,4-oxadiazole-2-thiol is glycosylated easily and in high yields with 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-alpha-D-glucopyranosyl chloride in the presence of catalytic amounts of aliphatic and aromatic crown ethers under phase transfer (solid-organic solvent) conditions. The reaction rate and the ratio of the resulting N- and S-regioisomers depend on the catalyst nature.