Synthesis of Bis-Acyclonucleoside Analogues Bearing Benzothienyl-1,2,4-Triazol-3-Yl-Disulfide under Conventional and Microwave Methods
作者:Mohamed R. Aouad、Nadjet Rezki、Mouslim Messali、El Sayed H. El Ashry
DOI:10.1080/15257770.2012.751491
日期:2013.1
The oxidation of 5-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole-3-thiol (1) with a solution of iodine and potassium iodide at room temperature afforded [5-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole-3-yl]disulfide (2). In contrast, when the reaction mixture was heated or irradiated by MW, an unexpected additional product was obtained and identified as 3-(3-chlorobenzo[b]thien-2-yl)-4H-1,2,4-triazole
在室温下,用碘和碘化钾溶液氧化5-(3-氯苯并[ b ]噻吩-2-基)-4 H -1,2,4-三唑-3-硫醇(1),得到[5] -(3-氯苯并[ b ]噻吩-2-基)-4 H -1,2,4-三唑-3-基]二硫化物(2)。相反,当反应混合物通过MW加热或辐照时,获得了意想不到的附加产物,并将其鉴定为3-(3-氯苯并[ b ]噻吩-2-基)-4 H -1,2,4-三唑(3); 产品比例为3:1。从理论计算中推导出优选的构象异构体2。化合物2和3用表氯醇和羟烷基化剂得到相应的N,N-双-和N-无环核苷酸类似物8-15。