Novel Simple Efficient Synthetic Approach Toward 6-Substituted-2<i>H</i>-[1,2,4]Triazolo[3,4-<i>b</i>][1,3,4]Thiadiazole-3-Thiones and First Synthesis and Biological Evaluation of<i>N</i>-and<i>S</i>-β-D-Glucosides of the[1,2,4]Triazolo [3,4-<i>b</i>][1,3,4]Thiadiazole Ring System
作者:Nasser S. A. M. Khalil
DOI:10.1080/15257770701296978
日期:2007.4.24
Novel simple and efficient synthetic approach for the synthesis of 6-substituted-2H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole-3-thiones is described. Glucosidation of these novel bases with 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyranosyl bromide followed by chromatographic separation gave the corresponding N-and S-ss-D-glucosides. The structure of these two regiosiomers was established chemically and
描述了用于合成6-取代的2H- [1,2,4]三唑[3,4-b] [1,3,4]噻二唑-3-硫酮的新颖简单有效的合成方法。用2,3,4,6-四-O-乙酰基-α-D-吡喃葡萄糖基溴化物对这些新型碱基进行糖苷化,然后进行色谱分离,得到相应的N-和S-ss-D-葡萄糖苷。这两种区域异构体的结构是通过化学和光谱学方法确定的。比较了两种针对烟曲霉,青霉菌,意大利青霉菌,总状头孢霉,白色念珠菌,金黄色葡萄球菌,铜绿假单胞菌,枯草芽孢杆菌和大肠杆菌的两种区域异构化合物的抗菌筛选。