作者:Tatiana N. Sokolova、Irina V. Yartseva、Maria N. Preobrazhenskaya
DOI:10.1016/s0008-6215(00)80749-1
日期:1981.6
Abstract The reaction of indole with a glycosyl halide containing a non-participating group at position 2 in the presence of silver oxide and molecular sieve in dry benzene yielded an O-substituted 3-glycosylindole (indole C-nucleoside). 2,3,4,6-Tetra-O-benzyl- d -glucopyranosyl bromide and 6-nitroindole gave anomeric per-O-benzylated 3- d -glucopyranosyl-6-nitroindoles; from 2,3,5-tri-O-benzyl- d
摘要在干燥的苯中存在氧化银和分子筛的情况下,吲哚与在位置2处具有非参与基团的糖基卤化物的反应生成了O-取代的3-糖基吲哚(吲哚C-核苷)。2,3,4,6-四-O-苄基-d-吡喃葡萄糖基溴化物和6-硝基吲哚得到异端的全-O-苄基化的3-d-吡喃葡萄糖基-6-硝基吲哚;由2,3,5-三-O-苄基-d-呋喃呋喃糖基溴化物和6-硝基吲哚得到异端的全-O-苄基化的6-硝基-3-d-核呋喃糖基吲哚。从2,3-O-异亚丙基-5-Op-硝基苯甲酰基-d-呋喃呋喃糖基溴化物开始,吲哚,5-溴吲哚,5-硝基吲哚或合成了6-硝基吲哚。用酸处理α端基异构体得到相应的β端基异构体。O脱保护后,获得了5-和6-硝基吲哚的3-β-d-呋喃核糖基衍生物。2,3-二-对甲苯甲酰基-d-呋喃呋喃糖基氯和6-硝基吲哚得到异头物1-(2-脱氧-d-赤藓基-五呋喃糖基)-6-硝基吲哚和3-(2-脱氧-d-赤藓基-戊呋喃糖基)-6-硝基吲哚。