作者:Eddy J. Freyne、Eddy L. Esmans、Josef A. Lepoivre、Frank C. Alderweireldt
DOI:10.1016/0008-6215(80)90003-8
日期:1980.1
bis(ethylene acetal) in acetonitrile at −5° gave the corresponding 1-(3,5- di -O- benzoyl -β- d - ribofuranosyl ))-3,5- disubstituted pyridinium chlorides in excellent yield (90%). From the reaction of a series of 2,3-O- isopropylidene -β- d -ribofuranosyl halides with 3-acetyl-5-methyl-pyridine at room temperature, the α -nucleosides were obtained.
摘要3,5-二-O-苯甲酰基-β-d-呋喃呋喃糖酰氯分别与3-乙酰基-5-烷基吡啶,5-烷基-3-甲氧基羰基吡啶(烷基= Me,Et,Pr和i Pr)缩合, 5-异丙基烟酰胺和3,5-二乙酰基吡啶双(乙缩醛)在-5°的乙腈中给出相应的1-(3,5-二-O-苯甲酰基-β-d-呋喃核糖基))-3,5-二取代吡啶鎓氯化物,收率极高(90%)。在室温下,通过一系列2,3-O-异亚丙基-β-d-呋喃呋喃糖基卤化物与3-乙酰基-5-甲基吡啶的反应,获得了α-核苷。