racil (8c), -thymine (8f), and -cytosine (11) has been done by stereospecific radical deoxygenation of the corresponding 2′-tert-TMSpropargyl methoxalyl esters with Bu3SnH in the presence of AIBN. 2′-Deoxy-2′-C-hexynyl derivative 8d was also prepared under similar conditions. On the other hand, the deoxygenation of the phenylpropargyl or propargyl esters gave complex mixtures due to hydrostannylation
2'-脱氧-2'- C-
乙炔基-1-β-D-阿拉伯
呋喃糖基尿
嘧啶(8c),-胸腺
嘧啶(8f)和-
胞嘧啶(11)的合成已通过相应2'-的立体定向自由基脱氧完成在AIBN存在下,与Bu 3 SnH一起形成叔-TMS炔丙基甲基
乙二酸酯。同样在类似条件下制备2′-脱氧-2′- C-己炔基衍
生物8d。另一方面,由于三键的加氢
苯乙烯基化作用,苯基炔丙基酯或炔丙基酯的脱氧得到复杂的混合物。