Structure-affinity relationships of 12-sulfonyl derivatives of 5,8,8a,9,10,11,12,12a,13,13a-decahydro-6H-isoquino[2,1-g][1,6]naphthyridines at .alpha.-adrenoceptors
作者:Robin D. Clark、David B. Repke、Jacob Berger、Janis T. Nelson、Andrew T. Kilpatrick、Christine M. Brown、Alison C. MacKinnon、Ruth U. Clague、Michael Spedding
DOI:10.1021/jm00106a036
日期:1991.2
dependent on the stereochemistry of the tetracyclic system. The 8a beta,12a alpha,13a alpha diastereomer of 1 (56) had moderate affinity for alpha 2-adrenoceptors while the 8a beta,12a beta,13a alpha diastereomer (55) had very low affinity. The affinity and selectivity of these agents for alpha 2-adrenoceptors was found to correspond to that observed for several isomeric yohimbine analogues which have
有效的α2-肾上腺素受体拮抗剂(8aR,12aS,13aS)-5,8,8a,9,10,11,12,12a,13,13a-十氢-3-甲氧基-12-(甲基磺酰基)-6H的类似物制备了-异喹啉[2,1-g] [1,6]萘啶(1b),并评估了α1-和α2-肾上腺素受体的亲和力。通过从大鼠大脑皮膜中置换[3H]育亨宾来评估对α2肾上腺素受体的亲和力,尽管1b和紧密的结构类似物表现出高亲和力,但对于存在于该组织中的α2A或α2B亚型均没有选择性。然而,所有的高亲和力α2-肾上腺素受体配体对[3 H]吡唑嗪(α1)结合具有选择性。发现对[3 H]育亨宾标记的α2-肾上腺素受体的亲和力高度依赖于四环系统的立体化学。8a beta,12a alpha,1(56)的13a alpha非对映异构体对α2肾上腺素受体具有中等亲和力,而8a beta,12a beta,13a alpha非对映异构体(55)具有非常