Investigations towards the synthesis of dTDP-2,6-dideoxy-D-erythro-3-hexulose — a potential intermediate in the biosynthesis of rare sugars
作者:Thomas Müller、Richard R Schmidt
DOI:10.1016/s0040-4039(97)01224-0
日期:1997.8
The synthesis of the target molecule 1 is based on thexyldimethylsilyl 4-O-acetyl-2,3,6-trideoxy-3-C-methylene-β-D-erythro-hexopyranoside (7) which is readily obtained via two different routes from tri-O-acetyl-D-glucal (2). Replacement of the anomeric silyl group by the diethylphosphite group, then performing a phosphite/phosphate exchange reaction, and finally removal of all protective groups afforded
目标分子1的合成基于4-O-乙酰基-2,3,6-三苯氧基-3-C-亚甲基-β -D-赤型-己基吡喃糖苷(7)的二甲基二甲基甲硅烷基(7),其可通过两种不同的途径容易地从三-O-乙酰基-D-葡萄糖(2)。用二乙基亚磷酸酯基取代异头甲硅烷基,然后进行亚磷酸酯/磷酸酯交换反应,最后除去提供的所有保护基和2,3,6-三-脱氧-3-C-亚甲基-D-赤型-六吡喃糖基磷酸酯(8); 其臭氧分解作用提供了相应的3-ulose 10。治疗8用导致了3-C亚甲基类似物吡啶dTMP的-morpholidate 9靶分子的α; 臭氧分解9 α提供1这-预期-经验丰富的后处理条件下相对较快β-消除。