from 2,3,5-tri-O-benzyl-1-O-iodoacetyl-D-ribofuranose and trimethylsilylated nucleophiles such as 3β-cholestanyl trimethylsilyl ether and phenyl trimethylsilyl sulfide is efficiently promoted by tin(II) chloride under mild conditions. When allyltrimethylsilane, azidotrimethylsilane, etc., are used as nucleophiles, combined use of catalytic amounts of SnCl2 and SiCl4 also afforded the corresponding ribofuranosides
锡 (II) 有效促进了由 2,3,5-三-O-苄基-1-O-
碘乙酰基-D-
呋喃核糖和三甲基甲
硅烷基化亲核试剂如 3β-胆甾烷三甲基甲
硅烷基醚和苯基三甲基甲
硅烷基
硫化物催化合成几种 D-
呋喃核糖苷) 在温和条件下
氯化。当烯丙基三甲基
硅烷、
叠氮基三甲基
硅烷等用作亲核试剂时,催化量的 SnCl2 和 SiCl4 的组合使用也以良好的产率提供相应的
呋喃核苷。