Optimization of a series of dipeptides with a P3 threonine residue as non-covalent inhibitors of the chymotrypsin-like activity of the human 20S proteasome
作者:Christopher Blackburn、Cynthia Barrett、Jonathan L. Blank、Frank J. Bruzzese、Nancy Bump、Lawrence R. Dick、Paul Fleming、Khristofer Garcia、Paul Hales、Zhigen Hu、Matthew Jones、Jane X. Liu、Darshan S. Sappal、Michael D. Sintchak、Christopher Tsu、Kenneth M. Gigstad
DOI:10.1016/j.bmcl.2010.09.032
日期:2010.11
Starting from a tripeptide screening hit, a series of dipeptide inhibitors of the proteasome with Thr as the P3 residue has been optimized with the aid of crystal structures in complex with the beta-5/6 active site of y20S. Derivative 25, (beta 5 IC(50) = 7.4 nM) inhibits only the chymotryptic activity of the proteasome, shows cellular activity against targets in the UPS, and inhibits proliferation. (C) 2010 Elsevier Ltd. All rights reserved.