Rational design of potent and selective NH-linked aryl/heteroaryl cathepsin K inhibitors
作者:Joël Robichaud、Christopher Bayly、Renata Oballa、Peppi Prasit、Christophe Mellon、Jean-Pierre Falgueyret、M David Percival、Gregg Wesolowski、Sevgi B Rodan
DOI:10.1016/j.bmcl.2004.05.087
日期:2004.8
of 4 into the S3 pocket of Cat K. The synthesis of the 2-substituted thiophene 5 confirmed this hypothesis by displaying a slight increase in potency against Cat K (>10-fold increase in potency vs 2) and a good selectivity profile against Cathepsins B, L, and S. This rationally designed inhibitor 5 also displayed increased potency in a functional bone resorption assay (10nM) versus 2 (95 nM).
我们实验室的先前报告已将非肽类抑制剂2确定为有效的选择性组织蛋白酶K(Cat K)抑制剂。建模研究表明,在P3芳基和P2亮氨酰胺基团之间引入NH接头将允许与Cat K的Gly66残基形成H键,从而有望增强效价。因此,合成了苯胺4并显示出比其前身2更高的效价。进一步的建模得出的结论是,2-取代的五元环可以更充分地将4的P3部分放入Cat K的S3口袋中。2-取代的噻吩的合成5通过证明对Cat K的效力略有增加(效力比2增加10倍以上)和对组织蛋白酶B,L和S的良好选择性,证实了这一假设。