In this research work, we report the synthesis and biological evaluation of two new series of 1-benzyl-4-(benzylidenehydrazono)-3,4-dihydro-1H-benzo[c] [1,2]thiazine 2,2-dioxides and 1-benzyl-4-((1-phenylethylidene)hydrazono)-3,4-dihydro-1H-benzo[c][1,2]thiazine 2,2-dioxides. The synthetic plan involves the mesylation of methyl anthranilate with subsequent N-benzylation of the product. The methyl 2-(N-benzylmethylsulfonamido)benzoate was subjected to cyclization reaction in the presence of sodium hydride to obtain 1-benzyl-1H-benzo[c][1,2]thiazin-4(3H)-one 2,2-dioxide which was treated with hydrazine hydrate to get corresponding hydrazone precursor. Finally, the titled compounds were obtained by reaction of hydrazone with various substituted aldehydes and ketones. The synthesized derivatives were subjected to carry out their inhibition activities against monoamine oxidases along with modelling investigations to evaluate their binding interactions and dynamic stability during the docking studies. The inhibition profile of potent compounds was found as competitive for both the isozymes. The compounds were more selective inhibitors of MAO-A as compared to MAO-B. Moreover, drug likeness profile of the derivatives was evaluated to have an additional insight into the physicochemical properties. The molecular dynamic simulations predicted the behaviour of amino acids with the active site residues.

在这项研究工作中，我们报告了两个新系列的1-苄基-4-（苄叉基肼基）-3,4-二氢-1 H-苯并[ c ] [1,2]噻嗪2,2-的合成和生物学评价。二氧化碳和1-苄基-4-（（1-苯乙叉基）肼基）-3,4-二氢-1 H-苯并[ c ] [1,2]噻嗪2,2-二氧化物。合成计划涉及邻氨基苯甲酸甲酯的甲磺酰化和随后产物的N-苄基化。将2-（N-苄基甲基磺酰胺基）苯甲酸甲酯在氢化钠存在下进行环化反应，得到1-苄基-1 H-苯并[ c ] [1,2]噻嗪-4（3 H）-用水合肼处理的2，2-二氧化物，得到相应的precursor前体。最后，通过使with与各种取代的醛和酮反应获得标题化合物。对合成的衍生物进行对单胺氧化酶的抑制活性，并进行模型研究以评估其对接研究中的结合相互作用和动态稳定性。发现有效化合物的抑制谱对两种同工酶都具有竞争性。与MAO-B相比，所述化合物是MAO-A的更具选择性的抑制剂。此外，对衍生物的药物相似性进行了评估，以进一步了解其理化性质。分子动力学模拟预测了具有活性位点残基的氨基酸的行为。