作者:Mark J. Bamford、Paul L. Coe、Richard T. Walker
DOI:10.1021/jm00171a025
日期:1990.9
allowed high yielding hydrolysis of the 3'-function to give the 3'-deoxy-3'-C-formyl-beta-D-arabino-pentofuranosyl nucleosides 21 and 22. Desilylation afforded the 1-(3-deoxy-3-C-formyl-beta- D-lyxo-pentofuranosyl) 3',5'-O-hemiacetal nucleosides 33 and 34, respectively. Reduction of the formyl group of 21 and 22, followed by desilylation, yielded the 3'-deoxy-3'-C-(hydroxymethyl)-beta-D-arabino- pentofuranosyl)
已经合成了一系列的3'-支链糖核苷,特别是3'-脱氧-3'-C-羟甲基核苷,并将其评估为抗病毒剂。尿嘧啶和胸腺嘧啶的1-(2,3-环氧-5-O-三苯甲基-β-D-lyxo-五氟呋喃糖基)衍生物12和13分别与5,6-二氢-2-lithio-5-甲基-1,3,5-二噻嗪14分别提供相应的3'-官能化核苷15和16。用叔丁基二苯基甲硅烷基取代三苯甲基可高产率地水解3'-官能团,得到3'-脱氧-3'-C-甲酰基-β-D-阿拉伯糖基-戊呋喃糖基核苷21和22。甲硅烷基化得到1-( 3-脱氧-3-C-甲酰基-β-D-lyxo-戊呋喃糖基)3',5'-O-半缩醛核苷33和34。还原21和22的甲酰基,然后进行甲硅烷基化,分别产生3'-脱氧-3'-C-(羟甲基)-β-D-阿拉伯糖基-呋喃呋喃糖基)类似物7和8。将7的尿嘧啶碱基部分转化为5-碘尿嘧啶,然后转化为(E)-5-(2-溴乙烯基)尿嘧啶,以提供B