Identification of substituted 4-aminopiperidines and 3-aminopyrrolidines as potent MCH-R1 antagonists for the treatment of obesity
作者:Nick Kim、Kenneth M. Meyers、Jose L. Mendez-Andino、Namal C. Warshakoon、Wei Ji、John A. Wos、Annyodile Colson、M. Chrissy Mitchell、Jan R. Davis、Beth B. Pinney、Ofer Reizes、X. Eric Hu
DOI:10.1016/j.bmcl.2006.07.053
日期:2006.10
A substituted 4-aminopiperidine was identified as showing activity in an MCH assay from an HTS effort. Subsequent structural modification of the scaffold led to the identification of a number of active MCH antagonists. 3,5-Dimethoxy-N-(1-(naphthalen-2-ylmethyl)piperidin-4-yl)benzamide (5c) was among those with the highest binding affinity to the MCH receptor (K-i = 27 nM), when variations were made at benzoyl and naphthylmethyl substitution sites from the initial HTS hit. Further optimization via piperidine ring contraction resulted in enhanced MCH activity in a 3-aminopyrrolidine series, where (R)-3,5-dimethoxy-N-(1-(naphthalen-2-ylmethyl)-pyrrolidin-3-yl)benzamide (10i) was found to be an excellent MCH antagonist (K-i = 7 nM). (c) 2006 Elsevier Ltd. All rights reserved.