Synthesis and screening of (E)-3-(2-benzylidenehydrazinyl)-5,6-diphenyl-1,2,4-triazine analogs as novel dual inhibitors of α-amylase and α-glucosidase
作者:Shahbaz Shamim、Khalid Mohammed Khan、Nisar Ullah、Sridevi Chigurupati、Abdul Wadood、Ashfaq Ur Rehman、Muhammad Ali、Uzma Salar、Ahmad Alhowail、Muhammad Taha、Shahnaz Perveen
DOI:10.1016/j.bioorg.2020.103979
日期:2020.8
(E)-3-(2-Benzylidenehydrazinyl)-5,6-diphenyl-1,2,4-triazines analogs 1-27 were synthesized by multi-step reaction scheme and subjected to in vitro inhibitory screening against alpha-amylase and alpha-glucosidase enzymes. Out of these twenty-seven synthetic analogs, ten compounds 14-17, 19, and 21-25 are structurally new. All com-pounds exhibited good to moderate inhibitory potential in terms of IC50 values ranging (IC50 = 13.02 +/- 0.04-46.90 +/- 0.05 mu M) and (IC50 = 13.09 +/- 0.08-46.44 +/- 0.24 mu M) in comparison to standard acarbose (IC50 = 12.94 +/- 0.27 mu M and 10.95 +/- 0.08 mu M), for alpha-amylase and alpha-glucosidase, re-spectively. Structure-activity relationship indicated that analogs with halogen substitution(s) were found more active as compared to compounds bearing other substituents. Kinetic studies on most active alpha-amylase and alpha-glucosidase inhibitors 5, 7, 9, 15, 24, and 27, suggested non-competitive and competitive types of inhibition mechanism for alpha-amylase and alpha-glucosidase, respectively. Molecular docking studies predicted the good protein-ligand interaction (PLI) profile with key interactions such as arene-arene, H- < , < - < , and < -H etc., against the corresponding targets.
(E)-3-(2-苯炔腙基)-5,6-二苯基-1,2,4-三元环系化合物的同源物1-27通过多步反应合成,并对α-淀粉酶和α-葡萄糖苷酶酶活性进行了体外抑制活性筛选。在这27种合成物中,有10种化合物(14-17、19和21-25)为结构新颖。所有化合物在IC50值方面显示了良好的到中等程度的抑制效果(与标准抗甲状腺药物acbmite相比,α-淀粉酶的IC50值为12.94±0.27 μM和10.95±0.08 μM;α-葡萄糖苷酶的IC50值为13.02±0.04 μM至46.90±0.05 μM和13.09±0.08 μM至46.44±0.24 μM)。通过结构活性关系(SAR)分析表明,卤素取代的同源物活性较其他取代基的化合物更高。动力学研究发现,大多数最活的α-淀粉酶和α-葡萄糖苷酶抑制剂(5、7、9、15、24和27号)表现出非竞争性和竞争型抑制机制。分子对接研究表明,这些化合物与相应靶标的蛋白-受体相互作用(PLI)表现为良好的特性,其中包括芳香-芳香、H-<、<-<和<-H等关键相互作用。