作者:Sabrina Taliani、Maria Letizia Trincavelli、Barbara Cosimelli、Sonia Laneri、Elda Severi、Elisabetta Barresi、Isabella Pugliesi、Simona Daniele、Chiara Giacomelli、Giovanni Greco、Ettore Novellino、Claudia Martini、Federico Da Settimo
DOI:10.1016/j.ejmech.2013.09.001
日期:2013.11
We have disclosed a series of 1-benzyl-3-ketoindole derivatives acting as either positive or negative modulators of the human A2B adenosine receptor (A(2B) AR) depending on small differences in their side chain. The new compounds were designed taking into account structural similarities between AR antagonists and ligands of the GABAA/benzodiazepine receptor. All compounds resulted totally inactive at A(2A) and A(3) ARs and showed small (8a,b) or none (7a,b, 8c and 9a,b) affinity for A(1) AR. When tested on A(2B) AR-transfected CHO cells, 7a,b and 8a acted as positive modulators, whereas 8b,c and 9a,b acted as negative modulators, enhancing or weakening the NECA-induced increase of cAMP levels, respectively. Compounds 7-9 might be regarded as useful biological and pharmacological tools to explore the therapeutic potential of A(2B) AR modulators, while their 3-ketoindole scaffold might be taken as a reference to design new analogs. (C) 2013 Elsevier Masson SAS. All rights reserved.