Synthesis and antiviral/antitumor activities of certain 3-deazaguanine nucleosides and nucleotides
作者:Ganapathi R. Revankar、Pranab K. Gupta、Alexander D. Adams、N. Kent Dalley、Patricia A. McKernan、P. Dan Cook、Peter G. Canonico、Roland K. Robins
DOI:10.1021/jm00377a002
日期:1984.11
3-deazaguanosine (2) has been developed by reacting methyl 5(4)-(cyanomethyl) imidazole-4(5)-carboxylate (4) and 5-(cyanomethyl)-1- (2,3,5-tri-O-benzoyl-beta-D-ribofuranosyl)imidazole-4-carboxylate (6), respectively, with hydrazine. The 3-deazaguanosine 3',5'-cyclic phosphate (13) was prepared from 5-(cyanomethyl)-1-beta-D-ribofuranosyl-imidazole-4-carboxamide 5'-phosphate. Glycosylation of the trimethylsilyl 4
通过使5(4)-(氰基甲基)咪唑-4(5)-羧酸甲酯反应,开发了一种制备抗病毒和抗肿瘤药3-deazaguanine(1)及其代谢物3-deazaguanosine(2)的新方法。 4)和5-(氰基甲基)-1-(2,3,5-三-O-苯甲酰基-β-D-呋喃呋喃糖基)咪唑-4-羧酸酯(6)与肼。由5-(氰基甲基)-1-β-D-呋喃呋喃糖基-咪唑-4-羧酰胺5'-磷酸制备3-脱氮鸟苷3',5'-环状磷酸酯(13)。在三甲基甲硅烷基三氟甲磺酸酯存在下,用1-O-甲基-2-脱氧-3,5-二-Op-甲苯甲酰基-D-呋喃呋喃糖将三甲基甲硅烷基4糖基化,得到相应的N-1和N-3糖基衍生物,其中α-配置(18和20)作为主要产品,以及少量的β-端基异构体(19和21)。然而,4的钠盐与1-氯-2-脱氧-3,5-二-Op-甲苯甲酰-α-D-赤型五氟呋喃糖(17)的糖基化反应仅产生良好的β-端基异构体(19和2