Synthesis, reactions, and crystal structure of 5-azido-6- O -benzoyl-3,5-dideoxy-3-fluoro-1,2- O -isopropylidene-α- d -glucofuranose
作者:C.-Kuan Lee、Huixin Jiang、Lip Lin Koh
DOI:10.1016/0008-6215(92)80042-y
日期:1992.2
Abstract 5-Bromo-6- O-tert -butyldiphenylsilyl-5-deoxy-1,2- O -isopropylidene-β- l -talofuranose ( 7 ) was obtained by treatment of 3,5- O -benzylidene-6- O-tert -butyldiphenylsilyl-1,2- O -isopropylidene-α- d -glucofuranose ( 3 ) with N -bromosuccinimide followed by Zemplen O -deacylation and an oxidation-reduction sequence. Nucleophilic displacement of the bromide in 7 with potassium azide readily
摘要通过对3,5-O-亚苄基-6-O-的处理,得到了5-溴-6-O-叔丁基二苯基甲硅烷基-5-脱氧-1,2-O-异亚丙基-β-1-β-呋喃呋喃糖(7)。叔丁基二苯基甲硅烷基-1,2-O-异亚丙基-α-d-葡萄糖呋喃糖(3)与N-溴丁二酰亚胺,然后进行Zemplen O-脱酰基和氧化还原顺序。用叠氮化钾将溴化物在7中进行亲核置换,很容易得到相应的5-azido-5-deoxy-allo衍生物8。用三(二甲基氨基)磺酸二氟三甲基硅酸酯处理8的3-三氟甲磺酸盐,得到5-叠氮基-6-O-叔丁基二苯基甲硅烷基-3,5-二甲氧基-3-氟-1,2-O-异亚丙基-α-d-葡萄糖呋喃糖(17.通过X射线结晶6-苯甲酸酯19确认17中C-3的构型。