Potent inhibitors of fatty acid amide hydrolase (FAAH) are constructed having K
1
'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 &agr;a-keto heterocylic head group; 2.) a hydrocarbon linkage unit employing an optimal C12-C8 chain length; and 3.) a phenyl or other &pgr;-unsaturation corresponding to the arachidonyl &Dgr;
8,9
/&Dgr;
11,12
and/or oleyl &Dgr;
9,10
positions. A preferred &agr;-keto heterocylic head group is &agr;-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K1值低于200 pM和比相应的三
氟甲基酮活性高102-103倍的
脂肪酸酰胺
水解酶(FAAH)的强效
抑制剂已被构建出来。这些强效
抑制剂结合了几个特点,即:1)α-酮杂环头基;2)使用最佳的C12-C8链长的碳氢键合单元;和3)与
花生四烯酸的Δ8,9 / Δ11,12和/或
油酸的Δ9,10位置相对应的苯或其他π-不饱和度。首选的α-酮杂环头基是α-酮N4
噁唑吡啶,并加入第二个弱碱性氮。
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类)和阿那达胺(一种内源性的
大麻素受体
配体)。