Design, synthesis, biological evaluation and molecular docking studies of dabigatran analogs as potential thrombin inhibitors
作者:Hai-Feng Chen、Ming-Hui Dong、Yu-Jie Ren、Fei Wang
DOI:10.1007/s13738-015-0743-4
日期:2016.2
A series of fluorinated dabigatran analogs were designed and synthesized. All the target compounds were characterized by 1H NMR, 13C NMR, and FT-ICR-MS. The thrombin inhibitory activities of the new synthesized compounds were also evaluated in vitro. The results show that compound 12a has the highest IC50 of thrombin inhibition (IC50 = 5.41 nM). Moreover, molecular docking simulation was carried out to elucidate the conformations of the compounds and key amino acid residues at the active site of thrombin protein. The results show there is an appropriate relationship between IC50 and the docking scores for compounds 12a–e. We suggest that the hydrogen bond interaction between Asp189, Gly219 of thrombin and the compounds appear to play major role in thrombin inhibition.
设计并合成了一系列含氟的达比加群类似物。所有目标化合物均通过1H NMR、13C NMR和FT-ICR-MS进行了表征。同时,对新合成的化合物进行了体外凝血酶抑制活性评估。结果显示,化合物12a对凝血酶的IC50值最高(IC50 = 5.41 nM)。此外,进行了分子对接模拟以阐明化合物在凝血酶蛋白活性位点的构象及关键氨基酸残基。结果表明,化合物12a至12e的IC50值与其对接得分之间存在适当的关系。我们认为,凝血酶中的Asp189、Gly219与化合物之间的氢键相互作用似乎在凝血酶抑制中起主要作用。