Probes for narcotic receptor mediated phenomena. 44. Synthesis of an N-substituted 4-hydroxy-5-(3-hydroxyphenyl)morphan with high affinity and selective μ-antagonist activity
作者:Malliga R. Iyer、Yong Sok Lee、Jeffrey R. Deschamps、Christina M. Dersch、Richard B. Rothman、Arthur E. Jacobson、Kenner C. Rice
DOI:10.1016/j.ejmech.2012.01.025
日期:2012.4
were synthesized. The compounds were examined for their opioid receptor affinity and the N-phenethyl analogue 3b was found to have relatively weak affinity for the μ-opioid receptor (Ki = 74 nM). However, the N-phenethyl analogue of the C-4 epimer, 4b, had about 15 fold higher affinity than 3b and was selective for the μ-opioid receptor (Ki = 4.6 nM). Compound 4b was a moderately potent μ-opioid antagonist
5-(3-羟基苯基)-2-甲基-2-氮杂双环[3.3.1]壬烷-4-醇( 3a )的简单三步合成是使用四氧化锇介导的已知中间体6的氧化实现的。当使用其他途径时,分离出3a (3-(7-(羟甲基)-6-methyl-6-azabicyclo[3.2.1]octan-1-yl)phenol ( 5 ))的吡咯烷环变体。差向异构羟基类似物4a是通过 C-4 处立体化学的简单反转合成的。既Ñ甲基(3A和4A)和ñ -苯乙基(图3b和4b中) 衍生物被合成。检查化合物的阿片受体亲和力,发现N-苯乙基类似物3b对 μ-阿片受体的亲和力相对较弱 ( K i = 74 nM)。然而,C-4 差向异构体的N-苯乙基类似物4b 的亲和力比3b高约 15 倍,并且对 μ-阿片受体具有选择性 ( K i = 4.6 nM)。 如通过[ 35 S]GTP-γ-S测定确定的,化合物4b是中等有效的μ-阿片类拮抗剂(