Dihydropyridine neuropeptide Y Y 1 receptor antagonists 2
摘要:
Structure-activity studies around the urea linkage in BMS-193885 (4a) identified the cyanoguanidine moiety as an effective urea replacement in a series of dihydropyridine NPY Y-1 receptor antagonists. In comparison to urea 4a (K-i = 3.3 nM), cyanoguanidine 20 (BMS-205749) displayed similar binding potency at the Y-1 receptor (K-i = 5.1 nM) and full functional antagonism (K-b = 2.6 nM) in SK-N-MC cells. Cyanoguanidine 20 also demonstrated improved permeability properties in Caco-2 cells in comparison to urea 4a (43 vs 19 nm/s). (C) 2003 Elsevier Ltd. All rights reserved.