title: Regioselective reaction: synthesis, characterization and pharmacological studies of some new Mannich bases derived from 1,2,4-triazoles.
abstract: In the present investigation, a series of new 4[(3-substituted-1H-pyrazol-4-yl)methyleneamino]-5-substituted-2-[(4-methylpiperzine-1-yl)methyl]-2H-1,2,4-triazole-3(4H)-thiones (4) were synthesized by the aminomethylation of 4-(3-substituted-1H-pyrazol-3-yl)methyleneamino-5-substituted-4H-1,2,4-triazole-3-thiols (3) with formaldehyde and N-methylpiperzine. These newly synthesized Schiff and Mannich bases were characterized by IR, (1)H NMR, mass spectral data and elemental analyses. These compounds were screened for their antibacterial and antifungal activity. Some of the compounds were found to exhibit significant antimicrobial activity.
authors.affiliation: Department of Chemistry, National Institute of Technology-Karnataka, Surathkal, Mangalore 575 025, India. isloor@yahoo.com
authors.forename: Arun M
authors.initials: AM
authors.lastname: Isloor
authors.forename: Balakrishna
authors.initials: B
authors.lastname: Kalluraya
authors.forename: Prashanth
authors.initials: P
authors.lastname: Shetty
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D000890:Anti-Infective Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D002176:Candida albicans / Q000187:drug effects; D008352:Mannich Bases / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D013329:Structure-Activity Relationship; D014230:Triazoles / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D008352:Mannich Bases; D014230:Triazoles; C045575:1,2,4-triazole