Sulfonamidopyrrolidinone Factor Xa Inhibitors: Potency and Selectivity Enhancements via P-1 and P-4 Optimization
作者:Yong Mi Choi-Sledeski、Daniel G. McGarry、Daniel M. Green、Helen J. Mason、Michael R. Becker、Roderick S. Davis、William R. Ewing、William P. Dankulich、Vincent E. Manetta、Robert L. Morris、Alfred P. Spada、Daniel L. Cheney、Karen D. Brown、Dennis J. Colussi、Valeria Chu、Christopher L. Heran、Suzanne R. Morgan、Ross G. Bentley、Robert J. Leadley、Sebastien Maignan、Jean-Pierre Guilloteau、Christopher T. Dunwiddie、Henry W. Pauls
DOI:10.1021/jm990041+
日期:1999.9.1
4-aminobenzamidines were discovered to be effective inhibitors of fXa. X-ray crystallographic experiments in trypsin and molecular modeling studies suggest that our inhibitors bind by insertion of the 4-hydroxybenzamidine moiety into the S-1 subsite of the fXa active site. Of the P-4 groups examined, the pyridylthienyl sulfonamides were found to confer excellent potency and selectivity especially in combination
磺酰胺基吡咯烷酮是先前公开的选择性类别的因子Xa(fXa)抑制剂,最终鉴定为RPR120844作为体内有效成员。认识到中央吡咯烷酮模板可用于将配体呈递给fXa的S-1和S-4亚基,因此开始了优化P-1和P-4组的研究。发现含有4-羟基-和4-氨基苯甲m的磺酰胺基吡咯烷酮是fXa的有效抑制剂。胰蛋白酶和分子模型研究中的X射线晶体学实验表明,我们的抑制剂通过将4-羟基苯甲m部分插入fXa活性位点的S-1子位而结合。在所审查的P-4组中,发现吡啶基噻吩基磺酰胺具有优异的效价和选择性,特别是与4-羟基苯甲m联用时。化合物20b(RPR130737)被证明是有效的fXa抑制剂(K(i)= 2 nM),对结构相关的丝氨酸蛋白酶具有选择性(> 1000倍)。初步生物学评估证明了该抑制剂在体外(例如活化的部分凝血活酶时间)和体内(例如大鼠FeCl(2)诱导的颈动脉血栓形成模型)血栓形成的常见测定中的有效性。