Arabinosylation of some 4-amino- and 4-arylideneamino-5-(pyridin-3-yl)-2,4-dihydro-[1,2,4]-triazole-3-thiones with 2,3,4-tri-O-acetyl-β-L-arabinopyranosyl bromide led to an efficient synthetic approach to the corresponding N-and S-α-L-arabinopyranosides. Structure assignment of these two regiosiomers was based on chemical and spectroscopic evidences. Antimicrobial activities of two selected regioisomeric N-and S-α-L-arabinopyranosides were compared. The N-α-L-arabinopyranoside showed higher inhibitory effect than its regioisomeric S-α-L-arabinopyranoside against Aspergillus fumigatus, Penicillium italicum, Staphylococcus aureus, and Pseudomonas aeruginosa.
First Synthesis And Antimicrobial Activity Of N- and S-α-L-Arabinopyranosyl-1,2,4-Triazoles
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