Potent inhibitors of fatty acid amide hydrolase (FAAH) are constructed having K
i
's below 200 pM and activities 10
2
-10
3
times more potent than the corresponding trifluoromethyl ketones. The potent inhibitors combine several features, viz.: 1.) an α-keto heterocylic head group; 2.) a hydrocarbon linkage unit employing an optimal C12-C8 chain length; and 3.) a phenyl or other π-unsaturation corresponding to the arachidonyl Δ
8,9
/Δ
11,12
and/or oleyl Δ
9,10
positions. A preferred α-keto heterocylic head group is α-keto N4 oxazolopyridine, with incorporation of a second weakly basic nitrogen. Fatty acid amide hydrolase is an enzyme responsible for the degradation of oleamide (an endogenous sleep-inducing lipid) and anandamide (an endogenous ligand for cannabinoid receptors).
具有Ki值低于200 pM的
脂肪酸酰胺水解酶(
FAAH)的强效
抑制剂被构建出来,其活性比相应的三
氟甲基酮高102-103倍。这些强效
抑制剂结合了几个特征,即:1)α-
酮杂环头基团;2)使用最佳C12-C8链长的烃链连接单元;和3)与
花生四烯酸Δ8,9/Δ11,12和/或
油酸Δ9,10位置相对应的
苯基或其他π-不饱和度。首选的α-
酮杂环头基团是α-
酮N4
噁唑吡啶,并结合第二个弱碱性
氮。
脂肪酸酰胺水解酶是一种酶,负责降解油
酰胺(一种内源性诱导睡眠的脂质)和阿那达胺(一种内源性的
大麻素受体
配体)。