Synthesis of (1′, 2′-trans)-3-phenyl-1-[2′-(N-pyrrolidinyl)cyclohexyl]-pyrrolid-2-ones as κ-selective opiates
作者:Chen-Yu Cheng、Hrong-Yow Lu、Fung-Mel Lee、S. William Tam
DOI:10.1002/jps.2600790821
日期:1990.8
(1',2'-trans)-3-Phenyl-1-[2'-(N-pyrrolidinyl)cyclohexyl]pyrrolid-2 -ones (1 and 2) and their 3,4-dichlorophenyl analogues (4 and 5) were synthesized as lactam analogues of U-50,488 (I; a kappa-opiate analgesic developed by Upjohn Company). Compounds 1 and 2 were found to be oxidized by air, in the presence of a strong base, to the 3-hydroxylated derivative 3. Compound 4 gave slightly higher kappa-affinity
(1',2'-反式)-3-苯基-1- [2'-(N-吡咯烷基)环己基]吡咯烷-2-酮(1和2)及其3,4-二氯苯基类似物(4和5)合成了U-50,488的内酰胺类似物(I; Upjohn Company开发的卡帕鸦片镇痛药)。发现化合物1和2在强碱存在下被空气氧化为3-羟基化衍生物3。化合物4的κ亲和力(Ki = 10 nM)比I稍高,约一半的κ -选择性(mu / kappa = 23)。化合物1和3表现出较弱的kappa结合力(Ki = 400 nM),kappa选择性与4大致相同。化合物5(一种非对映异构体4)的kappa结合力明显弱于4。同样,2比1更弱,选择性更低。具有I的基本骨架的中间化合物的结合数据似乎反映了亲脂性的重要性以及大取代基对酰胺氮的有害作用。I在阿片受体上的结合构象可能接近内酰胺类似物4的构象。