Synthesis of 2’-Deoxy-4’-C-hydroxymethyl-4’-thioribonucleosides and Their 2’,3’-Dideoxy and 2’,3’-Didehydro-2’,3’-dideoxy Analogues
作者:Junzo Nokami、Masayuki Mae、Satoshi Fukutake、Tomoyuki Ubuka、Mitsuhiro Yamada
DOI:10.3987/com-08-s(n)100
日期:——
pyrimidines and trimethylsilyl triflate (Kita-O'Niel-Matsuda's method; modified Pummerer rearrangement). On the other hand, the compounds 2 and 3 have been obtained via N-glycosylation of the corresponding 4'-thiofuranoses 7 and 8 with trimethylsilylated pyrimidines and SnCl 4 , respectively, while the compounds 7 and 8 have been prepared from compounds 5 and 6 by an electrochemical 2-acetoxylation, respectively
- (±)-2'-Deoxy-4'-C-hydroxymethyl-4'-thioribonucleosides (1) 及其 2', 3'-dideoxy- (2) 和 2', 3'-didehydro-2', 3 '-二脱氧- (3) 类似物已从氢噻吩衍生物 2,2-双(苄氧基甲基)-3-苄氧基四氢噻吩 (4)、2,2-双-(乙酰氧基甲基)四氢噻吩 (5) 和 2,2-双(乙酰氧基甲基)-2,5-二氢噻吩(6)。化合物 1 的制备通过相应的亚砜 9 进行 N-糖基化,通过 m-CPBA 氧化衍生自 4,用三甲基甲硅烷基化的嘧啶和三甲基甲硅烷基三氟甲磺酸酯(Kita-O'Niel-Matsuda 的方法;改进的 Pummerer 重排)。另一方面,化合物 2 和 3 是通过相应的 4' 的 N-糖基化获得的。