Radical-based transformation of vicinal diols to olefins via thioxocarbamate derivatives: a simple approach to 2′,3′-didehydro-2′,3′-dideoxynucleosides
作者:Makoto Oba、Mitsuteru Suyama、Atsushi Shimamura、Kozaburo Nishiyama
DOI:10.1016/s0040-4039(03)00847-5
日期:2003.5
The bis-O-thioxocarbamate derivatives obtained from the reaction of vicinal diols with phenyl isothiocyanate are shown to be reduced with tris(trimethylsilyl)silane in the presence of azobisisobutyronitrile to afford the corresponding olefins in good yields. In this way, 2′,3′-didehydro-2′,3′-dideoxy analogs of adenosine, guanosine, inosine, cytidine and uridine were prepared by the radical-based deoxygenation
已显示,在偶氮二异丁腈的存在下,由邻二醇与异硫氰酸苯酯反应制得的双-O-硫代氨基甲酸酯衍生物被三(三甲基甲硅烷基)硅烷还原,以高收率提供了相应的烯烃。这样,通过相应的核糖核苷通过双-O-硫代羰基氨基甲酸酯衍生物的基于自由基的脱氧反应,制备了腺苷,鸟苷,肌苷,胞苷和尿苷的2',3'-didehydro-2',3'-dideoxy类似物。。