Anti-oxidant and anti-bacterial activities of novel N ′-arylmethylidene-2-(3, 4-dimethyl-5, 5-dioxidopyrazolo[4,3- c ][1,2]benzothiazin-2(4 H )-yl) acetohydrazides
作者:Matloob Ahmad、Hamid Latif Siddiqui、Muhammad Zia-ur-Rehman、Masood Parvez
DOI:10.1016/j.ejmech.2009.11.016
日期:2010.2
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
一系列潜在的抗氧化剂和抗菌N'-芳基亚甲基-2-(3,4-二甲基-5,5-二氧化吡唑并[4,3- c ] [1,2]苯并噻嗪-2(4 H)-从商业上可获得的糖精开始以容易的方式合成酰基)乙酰肼。通过2-(2-氧丙基)-1,2-苯并噻唑-3的扩环反应获得3,4-二甲基-2,4-二氢吡唑并[4,3- c ] [1,2]苯并噻嗪5,5-二氧化物。 (2小时)-1,1-二氧化物,然后进行N-甲基化,并通过超声辐射与肼环化。用氯乙酸甲酯对环化产物进行N-烷基化,然后与肼反应,随后与芳香族醛进行超声介导的缩合,得到标题化合物。对所有合成的化合物的抗氧化和抗菌活性进行了初步评估。