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
N- and S-α-l-Arabinopyranosyl[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles. First synthesis and biological evaluation
作者:Nasser S.A.M. Khalil
DOI:10.1016/j.ejmech.2007.01.025
日期:2007.9
First synthesis of N- and S-alpha-l-arabinopyranosyl[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles is described. Antimicrobialscreening of two selected regioisomeric compounds against Aspergillus fumigatus, Penicillium italicum, Syncephalastrum racemosum, Candida albicans, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis and Escherichia coli are compared.