Discovery and Clinical Evaluation of 1-{<i>N</i>-[2-(Amidinoaminooxy)ethyl]amino}carbonylmethyl-6-methyl-3-[2,2-difluoro-2-phenylethylamino]pyrazinone (RWJ-671818), a Thrombin Inhibitor with an Oxyguanidine P1 Motif
作者:Tianbao Lu、Thomas Markotan、Shelley K. Ballentine、Edward C. Giardino、John Spurlino、Kathryn Brown、Bruce E. Maryanoff、Bruce E. Tomczuk、Bruce P. Damiano、Umesh Shukla、David End、Patricia Andrade-Gordon、Roger F. Bone、Mark R. Player
DOI:10.1021/jm901802n
日期:2010.2.25
prolonged occlusion time 2- and 3-fold at 0.1 and 1.0 mg/kg, iv, respectively, and more than doubled activated clotting time and activated partial thromboplastin time at the higher dose. This compound had excellent oral bioavailability of 100% in dogs with an estimated half-life of approximately 3 h. On the basis of its noteworthy preclinical data, 8 was advanced into human clinical trials and successfully
我们已经将RWJ-671818(8)鉴定为一种新型的低分子量人α凝血酶口服活性抑制剂(K i = 1.3 nM),对静脉和动脉血栓形成的急性和慢性治疗具有潜在的作用。在用于评估抗血栓形成功效的大鼠深静脉血栓形成模型中,口服30 mg / kg和50 mg / kg的8分别减少了87%和94%的血栓重量。在麻醉的大鼠抗血栓形成模型中,颈动脉的电刺激产生了血栓,8静脉注射分别延长了0.1和1.0 mg / kg的2倍和3倍的阻塞时间,在较高剂量下,活化凝血时间和活化部分凝血活酶时间延长了一倍以上。该化合物在狗中具有100%的优异口服生物利用度,估计半衰期约为3小时。根据其值得注意的临床前数据,有8项药物已进入人体临床试验,并顺利通过了1期研究。