Synthesis of 2-(Trimethylsilyl)ethyl 4-C-methyl-β-d-gluco-pyranuronamide. a derivative suitable as building block in synthesis of phosphoglycolipid antibiotics
作者:Thomas G. Hansson、Niklas A. Plobeck
DOI:10.1016/0040-4020(95)00693-3
日期:1995.10
The title compound, a protected derivative of a unique component in the moenuronamide group of phosphoglycolipid antibiotics has been synthesised in eleven steps and 30 % total yield from 2(trimethylsilyl) ethyl-β-d-galactopyranoside (6). The key step was a stereroselective addition of methylmagnesium chloride to ketone 11 to form the 4-C-methyl-glucopyranoside 12.
标题化合物是磷酸糖脂类抗生素的单磺酰胺类中独特组分的受保护衍生物,已通过11个步骤合成,并且从2(三甲基甲硅烷基)乙基-β-d-吡喃半乳糖苷中获得30%的总收率(6)。关键步骤是将甲基氯化镁立体选择性地添加到酮11中,以形成4-C-甲基-吡喃葡萄糖苷12。