Synthesis and single-crystal X-ray diffraction studies of 1-β-D-ribofuranosyl-1,2,4-triazole-3-sulfonamide and certain related nucleosides
作者:Naeem B. Hanna、Slobodan D. Dimitrijevich、Steven B. Larson、Roland K. Robins、Ganapathi R. Revankar
DOI:10.1002/jhet.5570250649
日期:1988.11
deacylation. The synthesis of 1-β-D-ribofuranosyl-3-benzylthio-1,2,4-triazole (15) has also been accomplished by the silylation procedure employing 3-benzylthio-1,2,4-triazole (13) and 5 to give 1-(2,3,5-tri-0-acetyl-β-D-ribofuranosyl)-3-benzylthio-1,2,4-triazole (14). Deacetylation of 14 furnished 15. The structural assignments of 7, 14 and 21 were made by single-crystal X-ray diffraction analysis and
1-β-d-呋喃核糖基21,1-(2-脱氧β-D- erytftro -pento毛皮anosyl) - 27和1-β-d-arabinofuranosyl- 29个的1,2,4-三唑-3-衍生物已经制备了-磺酰胺(19)。的糖基化甲硅烷基化19与1,2,3,5-四- 0 -乙酰基β-d-D-呋喃核糖(5中的三甲基硅烷基三氟甲磺酸酯的存在下),得到相应的被保护的核苷(20),其上的氨解,得到1-β -D-呋喃呋喃糖基-1,2,4-三唑-3-磺酰胺(21)。19的钠盐与1-氯-2-脱氧-3,5-二-O的立体特异性糖基化- p甲苯甲酰-α-D-赤-pentofuranose(22)或1-氯-2,3,5-三- 0 -苄基α-d阿拉伯呋喃糖(23)提供相应的保护的核苷26和28,脱保护的26和28布置1-(2-脱氧β-D-赤式-pentofuranosyl)-1,2,4-三唑-3-磺酰胺(27)和1-β-d阿拉伯呋喃糖基-1