Synthesis of C1-C6 Segment of Carbonolide B: Wolff Rearrangement of Sugar α-Diazo Ketones
作者:Jayant N. Tilekar、Nitin T. Patil、Dilip D. Dhavale
DOI:10.1055/s-2000-6343
日期:——
Silver benzoate catalysed Wolff rearrangement of a series of α-diazo ketones, derived from furanuronic acids, in methanol proceeds with good yields to produce the corresponding one carbon homologated methyl-5-deoxy-hexo-furanuronate. The utility of methyl-1,2-O-isopropylidene-3-O-methyl-5-deoxy-α-d-xylo-hexo-furanuronate was demonstrated in the synthesis of the right wing segment of carbonolide B - the aglycone of the 16 membered macrolide antibiotic carbomycin B.
银苯甲酸盐催化的Wolff重排反应在甲醇中对一系列由呋喃糖酸衍生的α-重氮酮进行,获得了良好的产率,生成了相应的一个碳同源物——甲基-5-脱氧-己糖呋喃酸酯。甲基-1,2-O-异丙烯基-3-O-甲基-5-脱氧-α-d-木糖-己糖呋喃酸酯在合成碳醇 B(16个成员的大环抗生素碳霉素 B的苷元)的右侧翼段中的应用得到了验证。