title: Anti-HAV activity of some newly synthesized triazolo[4,3-b]pyridazines.
abstract: 6-Phenyl-[1,2,4]triazolo[4,3-b]pyridazine-3(2H)-thione 2 was used as precursor for the preparation of some novel 3-S-substituted-6-phenyl-[1,2,4]triazolo[4,3-b]pyridazine derivatives 3-11. Furthermore, the preparation of 1-[2-(6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-ylsulfanyl)-acetyl]-1H-pyrazole derivative 13 and 5-(6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-ylsulfanylmethyl)-[1,3,4]oxadiazole derivatives 15 and 17, are described. Some of the prepared products revealed a promising antiviral activity against hepatitis-A virus (HAV, MBB-cell culture adapted strain). Plaque reduction infectivity assay was used to determine virus count reduction as a result of treatment with the test compounds. Compound 15 showed the highest effect on HAV compared to the other tested compounds.
authors.affiliation: Photochemistry Department, National Research Centre, Dokki, Cairo, Egypt. ahshamroukh@yahoo.com
authors.forename: Ahmed H
authors.initials: AH
authors.lastname: Shamroukh
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: Ali
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D045744:Cell Line, Tumor; D030041:Hepatitis A virus / Q000187:drug effects* / Q000502:physiology; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011724:Pyridazines / Q000138:chemical synthesis* / Q000494:pharmacology; D013329:Structure-Activity Relationship; D014230:Triazoles / Q000138:chemical synthesis* / Q000494:pharmacology; D010948:Viral Plaque Assay; D014779:Virus Replication / Q000187:drug effects
chemical_list: D000998:Antiviral Agents; D011724:Pyridazines; D014230:Triazoles