A series of 2,3-diaminopyridine bradykinin B-1 antagonists was modified to mitigate the potential for bioactivation. Removal of the 3-amino group and incorporation of basic 5-piperazinyl carboxamides at the pyridine 5-position provided compounds with high affinity for the human B-1 receptor. (C) 2006 Elsevier Ltd. All rights reserved.
Novel small molecule bradykinin B1 receptor antagonists. Part 2: 5-membered diaminoheterocycles
摘要:
Efforts to find new bradykinin B-1 receptor antagonists identified 2-aminobenzimidazole as a novel core. Subsequent transformation into five-membered diaminoheterocycle derivatives and their synthesis and SAR is described. This resulted in compounds with low nanomolar activity. (C) 2009 Elsevier Ltd. All rights reserved.