Structural manipulation on the catecholic fragment of dopamine D1 receptor agonist 1-phenyl-N-methyl-benzazepines
作者:Jing Zhang、Jiye Huang、Zilan Song、Lin Guo、Wenxian Cai、Yun Wang、Xuechu Zhen、Ao Zhang
DOI:10.1016/j.ejmech.2014.07.059
日期:2014.10
A series of new benzazepines with modification on the catecholic fragment were designed. The 8-hydroxyl group, other than the 7-hydroxyl was confirmed crucial to the interaction with the dopamine D-1 receptor. Subsequent replacement of the 7-hydroxyl with benzylamino groups was found tolerable. 7-(m-Chlorophenyl)methylamino- and 7-(m- or o-tolyl)methylamino-substituted benzazepines 13b-d displayed K-i values of 270-370 nM at the D-1 receptor, which were slightly more potent than that of parent compound I. In addition, 7-(arylmethyl)amino-benzazepines 13a-c were found possessing high binding affinities less than 10 nM at the 5-HT2A receptor. Among them, the non-substituted 7-benzylamino analogue 13a was the most potent showing a K-i values of 4.5 nM at the 5-HT2A receptor and a 5-HT2A/D-1 selectivity of 147. (C) 2014 Elsevier Masson SAS. All rights reserved.