Design, Synthesis, and Evaluation of Matrix Metalloprotease Inhibitors Bearing Cyclopropane-Derived Peptidomimetics as P1‘ and P2‘ Replacements
作者:Andreas Reichelt、Christoph Gaul、Robin R. Frey、April Kennedy、Stephen F. Martin
DOI:10.1021/jo0110698
日期:2002.6.1
hydrogen bonding capability associated with the P1'-P2' amide group. On the other hand, compounds 10 and 11, which contain a P2'-P3' retro amide group, were modest competitive inhibitors of a series of MMPs. The results obtained for 10 and 11 suggest that there may be a loss of hydrogen bonding capability associated with introducing the P2'-P3' retro amide group. However, because the conformationally constrained
我们先前已经使用三取代的环丙烷作为肽替代物,以在许多重要酶的已知假肽抑制剂中诱导构象限制。环丙烷衍生的肽模拟物是新颖的,因为它们是少数以预定方式局部定向肽主链和氨基酸侧链的替代物。尽管已使用这些二肽等排体来模拟模仿chi(1)空间的gauche(-)构象的氨基酸侧链,但尚未评估它们将侧链投射为反方向的能力。作为朝着这个目标迈出的第一步,制备了构象受限的假肽8和10以及它们相应的柔性类似物9和11并作为基质金属蛋白酶(MMP)的抑制剂进行了测试。这些化合物是4和5的类似物 已知是有效的MMP抑制剂。相对于环丙烷上的肽主链取代基,预测8中的异丙基侧链和10中的芳环的反方向对应于5的P1'和P2'侧链与MMP结合时的已知方向。因此,明确设计了8和10,以探测MMP的S1'或S2'结合口袋的拓扑特征。他们还被设计来探索P1'-P2'酰胺基的重要性,该基团已知在几种MMP抑制剂复合物中形成高度保守的