Synthesis of 6-deoxy-l-idose and l-acovenose from 1,2:5,6-di-O-isopropylidene-α-d-glucofuranose
作者:Shang-Cheng Hung、Shankar R. Thopate、Ramachandra Puranik
DOI:10.1016/s0008-6215(01)00058-1
日期:2001.4
-idose and l -acovenose from 1,2:5,6-di- O -isopropylidene-α- d -glucofuranose is described. Key steps include the stereoselective hydrogenation of 6-deoxy-1,2:3,5-di- O -isopropylidene-α- d - xylo -hex-5-enofuranose, regioselective protection of 6-deoxy-1,2- O -isopropylidene-β- l -idofuranose at O-5, and epimerisation of 6-deoxy-5- O - tert -butyldimethylsilyl-1,2- O -isopropylidene-β- l -idofuranose
摘要描述了一种由1,2:5,6-二-O-异亚丙基-α-d-葡糖呋喃糖合成6-脱氧-1-糖和1-椰油糖的实用途径。关键步骤包括6-脱氧-1,2:3,5-二-O-异亚丙基-α-d-二甲苯基-hex-5-异呋喃糖的立体选择性加氢,6-脱氧-1,2-O-的区域选择性保护。 O-5处的异亚丙基-β-1-呋喃糖,C-3处6-脱氧-5-O-叔丁基二甲基甲硅烷基-1,2-O-异亚丙基-β-1-呋喃糖的差向异构化。