title: First synthesis and antimicrobial activity Of N- and S-alpha-L-arabinopyranosyl-1,2,4-triazoles.
abstract: 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-beta-L-arabinopyranosyl bromide led to an efficient synthetic approach to the corresponding N-and S-alpha-L-arabinopyranosides. Structure assignment of these two regiosiomers was based on chemical and spectroscopic evidences. Antimicrobial activities of two selected regioisomeric N-and S-alpha-L-arabinopyranosides were compared. The N-alpha-L-arabinopyranoside showed higher inhibitory effect than its regioisomeric S-alpha-L-arabinopyranoside against Aspergillus fumigatus, Penicillium italicum, Staphylococcus aureus, and Pseudomonas aeruginosa.
authors.affiliation: Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt. nasserkhalil_23@hotmail.com
authors.forename: Nasser S A M
authors.initials: NS
authors.lastname: Khalil
mesh_terms: D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001232:Aspergillus fumigatus / Q000254:growth & development; D008826:Microbial Sensitivity Tests; D010407:Penicillium / Q000254:growth & development; D011550:Pseudomonas aeruginosa / Q000254:growth & development; D013211:Staphylococcus aureus / Q000254:growth & development; D014230:Triazoles / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000890:Anti-Infective Agents; D014230:Triazoles