Synthesis of Methyl<i>O</i>-<i>α</i>-D-Mannosyl-(1→4)-[(3-<i>O</i>-methyl-<i>α</i>-D- mannosyl)-(1→4)-]<sub><i>n</i></sub>3-<i>O</i>-methyl-<i>α</i>-D-mannosides (<i>n</i>= 0, 1, and 2) via Dehydrative Glycosylation
作者:Motoko Hirooka、Megumi Terayama、Emi Mitani、Shinkiti Koto、Asako Miura、Kayo Chiba、Ayano Takabatake、Takako Tashiro
DOI:10.1246/bcsj.75.1301
日期:2002.6
Methyl O-α-D-mannopyranosyl-(1→4)-[(3-O-methyl-α-D-mannopyranosyl-(1→4)-]n3-O-methyl-α-D-mannopyranosides (n = 0, 1, and 2), the lowest homologs related to the 3-O-methylmannose polysaccharides (MMP) from Mycobacterium smegmatis, were synthesized via dehydrative glycosylation reactions. The reagent systems, composed of p-nitrobenzenesulfonyl chloride, silver trifluoromethanesulfonate, and triethylamine, of p-nitrobenzenesulfonyl chloride, silver trifluoromethanesulfonate, and 1, 8-diazabicyclo[5.4.0]undec-7-ene, and of trimethylsilyl trifuloromethanesulfonate and pyridine were useful.
通过脱水糖基化反应合成了甲基 O-α-D-吡喃甘露糖基-(1→4)-[(3-O-甲基-α-D-吡喃甘露糖基-(1→4)-]n3-O-甲基-α-D-吡喃甘露糖苷(n = 0、1 和 2),这是分枝杆菌中 3-O-甲基甘露糖多糖(MMP)的最低同源物。由对硝基苯磺酰氯、三氟甲磺酸银和三乙胺,对硝基苯磺酰氯、三氟甲磺酸银和 1,8-二氮杂双环[5.4.0]十一-7-烯,以及三氟甲磺酸三甲基硅酯和吡啶组成的试剂体系非常有用。