Peptidic 1-cyanopyrrolidines: synthesis and SAR of a series of potent, selective cathepsin inhibitors
作者:R Rydzewski
DOI:10.1016/s0968-0896(02)00173-6
日期:2002.10
micromolar inhibitors of cathepsin B (Cat B) but nanomolar to picomolar inhibitors of cathepsins K, L, and S (Cat K, Cat L, Cat S). Several of the compounds were >20-fold selective versus the other three cathepsins. SAR trends were observed, most notably the remarkable potency of Cat L inhibitors based on the 1-cyano-D-proline scaffold. The selectivity of one such compound, the 94 picomolar Cat L inhibitor
先前已经报道了1-氰基吡咯烷酮抑制半胱氨酸组织蛋白酶(Falgueyret,J.-P。等人,J.Med.Chem.2001,44,94)。为了优化给定组织蛋白酶的结合相互作用并同时减少与其他紧密相关的酶的相互作用,将小的肽取代基从脯氨酸开始的2位或氨基吡咯烷的3位引入1-氰基吡咯烷骨架中。 。所得新化合物被证明是组织蛋白酶B(Cat B)的微摩尔抑制剂,但是组织蛋白酶K,L和S的皮摩尔抑制剂的纳摩尔至皮摩尔抑制剂(Cat K,Cat L,Cat S)。相对于其他三种组织蛋白酶,几种化合物具有> 20倍的选择性。观察到SAR趋势,最显着的是基于1-氰基-D-脯氨酸支架的Cat L抑制剂的显着效力。在DLD-1细胞中以较高的浓度证明了一种这样的化合物(94皮摩尔的Cat L抑制剂12)的选择性。尽管所测试的脯氨酸系列化合物在体外骨吸收测定中均未证明是亚微摩尔的,但在该测定中,3-取代的吡咯烷系列中的两种Cat