申请人:Board of Control of Michigan Technological University
公开号:US04282349A1
公开(公告)日:1981-08-04
Methyl-D-ribofuranoside is p-nitrobenzoylated to yield crystalline methyl 2,3,5-tri-O-(p-nitrobenzoyl)-.beta.-D-ribofuranoside which can be used to prepare a stable, crystalline 2,3,5-tri-O-(p-nitrobenzoyl)-.beta.-D-ribofuranosyl bromide which in turn is useful as a precursor of natural or synthetic purine and pyrimidine nucleosides, as well as of glycosides. This bromide can also be cyanated to yield crystalline 2,5-anhydro-3,4,6-tri-O-(p-nitrobenzoyl)-D-allononitrile which in turn can be hydrolyzed and subsequently reacted with polyamino pyrimidines to yield nucleoside analogs such as 8-.beta.-D-ribofuranosyl adenine. This bromide also can by hydrolyzed to yield crystalline 2,3,5-tri-O-(p-nitrobenzoyl)-D-ribofuranose which in turn can be p-nitrobenzolated to yield crystalline 1,2,3,5-tetra-O-(p-nitrobenzoyl)-.beta.-D-ribofuranose. This latter compound can be brominated to produce an alphabromide derivative which is useful as a precursor of nucleosides.
甲基-D-核糖呋喃苷被对硝基苯甲酰化,得到结晶的甲基2,3,5-三-O-(对硝基苯甲酰)-β-D-核糖呋喃苷,可用于制备稳定的、结晶的2,3,5-三-O-(对硝基苯甲酰)-β-D-核糖基溴化物,后者可用作天然或合成嘌呤和嘧啶核苷的前体,以及糖苷的前体。这种溴化物也可以氰化,得到结晶的2,5-脱水-3,4,6-三-O-(对硝基苯甲酰)-D-阿洛酸腈,后者可以水解,然后与多氨基嘧啶反应,得到核苷类似物,如8-β-D-核糖苷腺嘌呤。这种溴化物也可以水解,得到结晶的2,3,5-三-O-(对硝基苯甲酰)-D-核糖呋喃糖,后者可以对硝基苯甲酰化,得到结晶的1,2,3,5-四-O-(对硝基苯甲酰)-β-D-核糖呋喃糖。后者可以溴化,产生一种α-溴代衍生物,可用作核苷的前体。