title: Anti-oxidant and anti-bacterial activities of novel N'-arylmethylidene-2-(3, 4-dimethyl-5, 5-dioxidopyrazolo[4,3-c][1,2]benzothiazin-2(4H)-yl) acetohydrazides.
abstract: A series of potential anti-oxidant and anti-bacterial N'-arylmethylidene-2-(3,4-dimethyl-5,5-dioxidopyrazolo[4,3-c][1,2]benzothiazin-2(4H)-yl)acetohydrazides was synthesized in a facile way starting from commercially available saccharine. 3,4-Dimethyl-2,4-dihydropyrazolo[4,3-c][1,2]benzothiazine 5,5-dioxide was obtained by ring expansion of 2-(2-oxopropyl)-1,2-benzisothiazol-3(2H)-one 1,1-dioxide followed by N-methylation and cyclization with hydrazine using ultrasonic irradiation. N-alkylation of the cyclized product with methyl chloroacetate followed by its reaction with hydrazine and subsequent ultrasonic mediated condensations with aromatic aldehydes afforded the title compounds. All the synthesized compounds were subjected to the preliminary evaluation for their anti-oxidant and anti-bacterial activities.
authors: Applied Chemistry Research Centre, PCSIR Laboratories Complex, Ferozpur Road, Lahore 54600, Pakistan.
authors: Matloob
authors: M
authors: Ahmad
authors: Hamid Latif
authors: HL
authors: Siddiqui
authors: Muhammad
authors: M
authors: Zia-ur-Rehman
authors: Masood
authors: M
authors: Parvez
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D005609:Free Radicals / Q000737:chemistry; D006801:Humans; D008826:Microbial Sensitivity Tests; D013237:Stereoisomerism; D013843:Thiazines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D000975:Antioxidants; D005609:Free Radicals; D013843:Thiazines