Design, synthesis, and biological evaluation of novel 4-alkylamino-1-hydroxymethylimidazo[1,2-a]quinoxalines as adenosine A1 receptor antagonists
摘要:
A series of 4-alkylamino-1-hydroxymethylimidazo[1,2-a]quinoxalines have been synthesized and evaluated for their adenosine A(1) receptor inhibitory activity in the radioligand binding assays. The compounds were tested for the inhibition percent (IP) and the affinity toward A(1)AR (K-i) that IP were more than 90% in the nanomolar range. 4-Cyclopentylamino-7,8-dichloro-1-hydroxymethylimidazo[1,2-a]quinoxaline 18 is the most potent compound in this series, having K-i = 7 nM, which is remarkably higher than that of IRFI-165 (K-i = 48). 1-Hydroxymethyl groups of the tricyclic heteroarmatic compounds displayed the potent affinities toward A(1)AR. (C) 2004 Elsevier Ltd. All rights reserved.
The invention features compositions and methods for treating or alleviating a symptom of cancer. The compositions and methods of the invention direct supra-lethal doses of radiation, called Hot-Spots, to virtually all cancer cell types.
Design, synthesis, and biological evaluation of novel 4-alkylamino-1-hydroxymethylimidazo[1,2-a]quinoxalines as adenosine A1 receptor antagonists
作者:Chun-He Liu、Bo Wang、Wei-Zhang Li、Liu-Hong Yun、Ying Liu、Rui-Bing Su、Jin Li、He Liu
DOI:10.1016/j.bmc.2004.06.026
日期:2004.9
A series of 4-alkylamino-1-hydroxymethylimidazo[1,2-a]quinoxalines have been synthesized and evaluated for their adenosine A(1) receptor inhibitory activity in the radioligand binding assays. The compounds were tested for the inhibition percent (IP) and the affinity toward A(1)AR (K-i) that IP were more than 90% in the nanomolar range. 4-Cyclopentylamino-7,8-dichloro-1-hydroxymethylimidazo[1,2-a]quinoxaline 18 is the most potent compound in this series, having K-i = 7 nM, which is remarkably higher than that of IRFI-165 (K-i = 48). 1-Hydroxymethyl groups of the tricyclic heteroarmatic compounds displayed the potent affinities toward A(1)AR. (C) 2004 Elsevier Ltd. All rights reserved.