Identification of Novel Binding Interactions in the Development of Potent, Selective 2-Naphthamidine Inhibitors of Urokinase. Synthesis, Structural Analysis, and SAR of <i>N</i>-Phenyl Amide 6-Substitution
作者:Michael D. Wendt、Todd W. Rockway、Andrew Geyer、William McClellan、Moshe Weitzberg、Xumiao Zhao、Robert Mantei、Vicki L. Nienaber、Kent Stewart、Vered Klinghofer、Vincent L. Giranda
DOI:10.1021/jm0300072
日期:2004.1.1
relevant serine proteases. Also, some selectivity against trypsin was generated via the interaction with Asp60A. X-ray structures of many of these compounds were used to inform our inhibitor design and to increase our understanding of key interactions. In combination with our exploration of 8-substitution patterns, we have identified a number of novel binding interactions for uPA inhibitors.
描述了丝氨酸蛋白酶尿激酶纤溶酶原激活剂(uPA或尿激酶)的6-取代的2-萘啶抑制剂的制备和生物学活性的评估。基于合成考虑和取代基载体的建模,选择2-萘甲啶作为起始点。发现在6-位的苯基酰胺可改善结合。用其他两个原子的连接子取代酰胺被证明是无效的。苯基本身位于S1'亚位点附近;苯基上的取代基进入S1'和其他远处的结合区域。定义了三个新的相互作用点,并通过环取代进行了探索。使用4-烷基氨基形成与Asp60A羧酸盐接触溶剂的盐桥,从而提高了对K(i)= 40 nM的亲和力。抑制剂也进入两个疏水区域。一种相互作用的特征是紧密的疏水配合,由一个由His57和His99定义的小酒窝制成。较弱的,较不特异的相互作用涉及烷基到达Val41和Cys42-Cys58二硫化物附近的宽大的质子侧蛋白结合区,从而置换水分子并导致较小的活性增加。许多抑制剂进入这三个区域中的两个。亲和力范围低至K(i)= 6 nM,许多化合物的K(i)<100