title: Synthesis, antibacterial, antifungal and anti-HIV evaluation of Schiff and Mannich bases of isatin and its derivatives with triazole.
abstract: Isatin (indole 2,3-dione) and its 5-chloro and 5-bromo derivatives have been reacted with 3-(4'-pyridyl)-4-amino-5-mercapto-4-(H)-1,2,4-triazole to form Schiff bases and the N-Mannich bases of these compounds were synthesised by reacting them with formaldehyde and several secondary amines. Their chemical structures have been confirmed by means of their IR, 1H-NMR data and by elemental analysis. Investigation of antimicrobial activity of compounds was done by agar dilution method against 27 pathogenic bacteria, 8 pathogenic fungi and anti-HIV activity against replication of HIV-1 (III B) in MT-4 cells. Among the compounds tested 1-(piperidinomethyl) 5-bromo 3-[3'-(4"-pyridyl)-5'-mercapto-4'-(H)-1',2',4'-triazol 4'-yl]imino isatin showed the most favourable antimicrobial activity.
authors.affiliation: Department of Pharmaceutics, Banaras Hindu University, Varanasi, India. snpande@banaras.ernet.in
authors.forename: S N
authors.initials: SN
authors.lastname: Pandeya
authors.forename: D
authors.initials: D
authors.lastname: Sriram
authors.forename: G
authors.initials: G
authors.lastname: Nath
authors.forename: E
authors.initials: E
authors.lastname: de Clercq
mesh_terms: D000900:Anti-Bacterial Agents; D019380:Anti-HIV Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D000935:Antifungal Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D002460:Cell Line; D005658:Fungi / Q000187:drug effects; D007510:Isatin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008352:Mannich Bases / Q000138:chemical synthesis / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D012545:Schiff Bases / Q000138:chemical synthesis / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared; D014230:Triazoles / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D019380:Anti-HIV Agents; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D008352:Mannich Bases; D012545:Schiff Bases; D014230:Triazoles; D007510:Isatin