First synthesis of the phosphono analogue of N-acetyl-α-<scp>D</scp>-mannosamine 1-phosphate
作者:Laura Cipolla、Luigi Lay、Francesco Nicotra、Luigi Panza、Giovanni Russo
DOI:10.1039/c39950001993
日期:——
treatment of the iodide with triethylphosphite to afford the corresponding phosphonate, deprotection of the hydroxy group, oxidation, oximation, catalytic hydrogenation and acetylation, afford the phosphono analogue of N-acetyl-α-D-mannosamine 1-phosphate.
用二乙烯基锌对2,3,5-三-O-苄基-D-阿拉伯糖进行构图,随后进行巯基环化和碘脱汞立体选择性,得到α-C-吡喃葡萄糖基碘化物3,在C-2处具有游离羟基。暂时保护游离羟基,用亚磷酸三乙酯处理碘化物得到相应的膦酸酯,羟基去保护,氧化,肟化,催化氢化和乙酰化,得到N-乙酰基-α - D-甘露糖胺的膦酰基类似物1 -磷酸盐。