Comprehensive Analysis of Structure–Activity Relationships of α-Ketoheterocycles as <i>sn</i>-1-Diacylglycerol Lipase α Inhibitors
作者:Freek J. Janssen、Marc P. Baggelaar、Jessica J. A. Hummel、Herman S. Overkleeft、Benjamin F. Cravatt、Dale L. Boger、Mario van der Stelt
DOI:10.1021/acs.jmedchem.5b01627
日期:2015.12.24
Diacylglycerol lipase alpha (DAGL alpha) is responsible for the formation of the endocannabinoid 2-arachidonoylglycerol (2-AG) in the central nervous system. DAGL alpha inhibitors are required to study the physiological mile of 2-AG. Previously, we identified the alpha-ketoheterocycles as potent and highly selective DAGL alpha inhibitors. Here, we present the first comprehensive structure activity relationship study Of alpha-ketohetero cycles as DAGL alpha inhibitors. Our findings indicate that the active site, of DAGL alpha is remarkably sensitive to the type of heterocyclic scaffold with oxazolo-4N-pridines as the most active framework We uncovered a fundamental substituent effect in which electron-withdrawing meta-oxazole substituents increased inhibitor potency. (C-6-C-9)-iacyl chains with a distal phenyl group proved to be the most potent inhibitors. The integrated SAR data was consistent with the proposed binding pose in a DAGL alpha homology model. Altogether, our results may guide the design of future DAGL alpha inhibitors as leads for molecular therapies to treat neuroinflammation, obesity, and related metabolic disorders.