2,7-Dioxo-2,3,4,5,6,7-hexahydro-1<i>H</i>-benzo[<i>h</i>][1,4]diazonine as a New Template for the Design of CCK<sub>2</sub> Receptor Antagonists
作者:Iain M. McDonald、David J. Dunstone、S. Barret Kalindjian、Ian D. Linney、Caroline M. R. Low、Michael J. Pether、Katherine I. M. Steel、Matthew J. Tozer、J. G. Vinter
DOI:10.1021/jm000960w
日期:2000.9.1
behaved as a competitive CCK(2) receptor antagonist in vitro as judged by its inhibition of pentagastrin-stimulated acid secretion in an isolated, lumen-perfused, immature rat stomach assay (pK(B) = 6.74 +/- 0.27) and by its displacement of [(125)I]CCK-8S from CCK(2) sites in mouse cortical homogenates (pK(i) = 6.99 +/- 0.05). Compound 32 was 100-fold selective for CCK(2) over CCK(1) receptors based on
制备了一系列新的非肽CCK(2)受体拮抗剂,其中2,7-二氧代-2,3,4,5,6,7-六氢-1H-苯并[h] [1,4]重氮( 5)用作化学模板。该不常见的环系统是通过对1,2,3,4-四氢-9H-吡啶并[3,4-b]吲哚衍生物(4)的烯胺键进行臭氧分解而以高取代形式和高收率获得的,其中取代基的构型是通过Pictet-Spengler反应立体选择性地建立的。通过分子建模,通过比较候选化合物与代表的CCK(2)受体拮抗剂5-[[[[(1S)-[[(3,5-二羧基苯基)氨基]羰基] -2-苯基乙基]氨基]羰基] -6-[[((1-金刚烷基甲基)氨基]羰基]吲哚(JB93182(3))。通过这种方法,诸如(3R,5S)-4-乙酰基-3-(1-金刚烷基)甲基-1-(2-氯苄基)-5-羧基甲基氨基羰基-2,7-二氧代-2,3,4的化合物制备了5,6,7-六氢-1H-苯并[h] [1,4]重氮(32