Design, synthesis and antithrombotic evaluation of novel dabigatran etexilate analogs, a new series of non-peptides thrombin inhibitors
作者:Dongxing Chen、Shaochi Wang、Xiaojuan Diao、Qihua Zhu、Huiliang Shen、Xueqing Han、Yiwei Wang、Guoqing Gong、Yungen Xu
DOI:10.1016/j.bmc.2015.10.036
日期:2015.12
and evaluated for their in vitro activities for inhibiting thrombin. The results reveal that compounds I-1 (IC50=9.20nM) and II-1 (IC50=7.48nM) are potent direct thrombin inhibitors and the activity is in the range of reference drug. On this basis, twenty-two ester and carbamate derivatives of I-1 or II-1 were prepared and evaluated for their anticoagulant activity. Prodrugs I-4a (IC50=0.73μM), I-4b
凝血酶是一种丝氨酸蛋白酶,在凝血过程中起关键作用,使其成为治疗血栓性疾病的有希望的靶标。达比加群是直接有效的凝血酶抑制剂。基于生物等排和支架跳跃原理,设计,合成和评估了两种达比加群模拟物(I-1和II-1),其中达比加群的苯甲am部分被三环稠合支架代替,并评估了其体外抑制凝血酶的活性。结果表明,化合物I-1(IC50 = 9.20nM)和II-1(IC50 = 7.48nM)是有效的直接凝血酶抑制剂,其活性在参考药物范围内。在此基础上,制备了I-1或II-1的22种酯和氨基甲酸酯衍生物,并对其抗凝活性进行了评估。前药I-4a(IC50 =0.73μM),I-4b(IC50 =0.75μM),II-2a(IC50 =1.44μM)和II-2b(IC50 = 0。91μM)表现出出色的抑制凝血酶诱导的血小板凝集的作用。此外,在大鼠静脉血栓形成模型中,包含具有抗血小板活性的可裂解部分的化合物I-