1,6-Anhydro-β-d-glucopyranose in organic synthesis: preparation of a fragment for the synthesis of rosaramycin
作者:Garry Procter、Denis Genin、Stephen Challenger
DOI:10.1016/0008-6215(90)84072-3
日期:1990.7
Abstract 1,6-Anhydro-β- d -glucopyranose has been used as the starting material for a synthesis of ethyl (E)-4-C-allyl-2,3,4,6-tetradeoxy-5,7-O-isopropylidene-8-O-methanesulphonyl-2,6-di-C-methyl- d -gulo-oct-2-enoate, which represents a synthetic unit equivalent to C-2/9 of the macrolide antibiotic rosaramycin. The synthesis involved a minimum of chromatography, and the extremely high level of regiochemical
摘要1,6-脱水-β-d-吡喃葡萄糖已用作合成(E)-4-C-烯丙基-2,3,4,6-四脱氧-5,7-O-的起始原料异亚丙基-8-O-甲磺酰基-2,6-二-C-甲基-d-古洛糖辛基-2-烯酸酯,其代表与大环内酯类抗生素罗莎霉素的C-2 / 9等效的合成单元。合成过程只需进行最少的色谱分析,在关键的CC键形成步骤中使用环氧化物可实现极高的区域化学和立体化学控制水平。还开发了一种使用甲苯磺酰基甲基异氰化物的方法,该方法将碳水化合物的6-醛(19)直接转化为相应的同源甲基酯。