Synthesis of glycopyranosylphosphonate analogs of certain natural nucleoside diphosphate sugars as potential inhibitors of glycosyltransferases
作者:Morteza M. Vaghefi、Ralph J. Bernacki、N. Kent Dalley、Bruce E. Wilson、Roland K. Robins
DOI:10.1021/jm00391a020
日期:1987.8
The synthesis of alpha-D-glucopyranosyl-, alpha-D-galactopyranosyl-, and alpha-D-mannopyranosylphosphonate is described. Condensation of tris(trimethylsilyl) phosphite with 2,3,4,6-tetrakis-O-(phenylmethyl)-1-O-acetyl-alpha-D-glucopyranose generated 2,3,4,6-tetrakis-O-(phenylmethyl)-alpha-D-glucopyranosylphosphonic acetic anhydride (13). The benzyl blocking groups were removed by catalytic hydrogenation
描述了α-D-吡喃葡萄糖基-,α-D-吡喃半乳糖基和α-D-甘露吡喃糖基膦酸酯的合成。亚磷酸三(三甲基甲硅烷基)酯与2,3,4,6-四-O-(苯甲基)-1-O-乙酰基-α-D-吡喃葡萄糖的缩合反应生成2,3,4,6-四-O-(苯甲基) )-α-D-吡喃葡萄糖基膦酸乙酸酐(13)。通过催化氢化除去苄基保护基团,并通过碱水解裂解酸酐键以获得α-D-吡喃葡萄糖基膦酸酯(15)。α-D-半乳糖吡喃糖基膦酸酯(17)和α-D-甘露糖吡喃糖基膦酸酯(19)也被类似地合成。15的端基异构构型通过单晶X射线分析确定,而17和19的结构确定是在比较NMR光谱研究的基础上进行的。然后将化合物15与在干燥吡啶中的腺苷5'-磷酸二正丁基膦硫代酸酐偶联,得到腺苷5'-磷酸α-D-吡喃葡糖基膦酸酐(23)。类似地,分别由17和19合成尿苷5'-磷酸α-D-吡喃半乳糖基膦酸酐(24)和鸟苷5'-磷酸α-D-甘露吡喃糖基