Synthesis of protected D-altritol nucleosides as building blocks for oligonucleotide synthesis
作者:Brigitte Allart、Roger Busson、Jef Rozenski、Arthur Van Aerschot、Piet Herdewijn
DOI:10.1016/s0040-4020(99)00287-2
日期:1999.5
D-Altritol nucleosides with an adenine and uracil base moiety were obtained by nucleophilic opening of the epoxide ring of 1,5:2,3-dianhydro-4,6-O-benzylidene-D-allitol using the sodium salt of the above mentioned bases. The use of a 2-trimethylsilylethyl protecting group for the O6-function of the guanine base offers a useful compromise between stability and acceptable alkylation yields of the N9-position
与腺嘌呤和尿嘧啶碱基部分d-阿卓糖醇核苷由1,5-环氧化物环的亲核开得到:2,3-二脱水-4,6- ø -亚苄基- d-蒜糖醇使用上述提到的钠盐基地。将2-三甲基甲硅烷基乙基保护基用于鸟嘌呤碱基的O 6-官能团在鸟嘌呤碱基的稳定性和N 9-位置可接受的烷基化产率之间提供了有用的折衷方案。从尿嘧啶同源物开始合成胞嘧啶核苷。3'-羟基官能团被苯甲酰基保护。