作者:Garry R. Smith、Robert M. Giuliano
DOI:10.1016/s0008-6215(99)00259-1
日期:1999.1
The synthesis of methyl alpha-L-vancosaminide from di-O-acetyl-L-rhamnal is described. The allylic alcohol methyl 2,3,6-trideoxy-3-C-methyl-alpha-L-threo-hex-2-enopyranoside was prepared from the glycal, 1,5-anhydro-1,2,6-trideoxy-3-C-methyl-L-ribo-hex-1-enitol, and converted to its N,N-dimethylisourea derivative. The cis amino alcohol functionality in vancosamine was introduced by the electrophilic
描述了由二-O-乙酰基-L-鼠李醛合成甲基α-L-香豆酰胺。由糖基的1,5-脱水-1,2,6-三苯氧基-3制备烯丙基醇甲基2,3,6-三苯氧基-3-C-甲基-α-L-苏-己-2--2-吡喃糖苷-C-甲基-L-ribo-hex-1-烯醇,并转化为其N,N-二甲基异脲衍生物。通过异脲的亲电环化作用,引入vancosamine中的顺式氨基醇官能团,然后水解所得的恶唑啉。