名称:
Design, synthesis and evaluation of benzo[a]thieno[3,2-g]quinolizines as novel l-SPD derivatives possessing dopamine D1, D2 and serotonin 5-HT1A multiple action profiles
摘要:
A novel scaffold derived from l-SPD with a substituted thiophene group in the D ring were designed, synthesized, and evaluated for their binding affinities at dopamine (D-1, D-2 and D-3) and serotonin (5-HT1A and 5-HT2A) receptors. Most of the tetracyclic compounds exhibited higher affinities for D-2 and 5-HT1A receptors than l-SPD, while compound 23e showed the highest K-i value of 7.54 nM at D-2 receptor which was 14 times more potent than l-SPD. Additionally, compounds 23d and 23e were more potent than l-SPD at D-3 receptor. According to the functional assays, 23d and 23e were demonstrated as full antagonists at D-1 and D-2 receptors and full agonists at 5-HT1A receptor. Since the combination of D-2 antagonism and 5-HT1A agonism is considered effective in treating both the positive and negative symptoms of schizophrenia, these novel compounds are implicated as potential therapeutic agents. (C) 2014 Published by Elsevier Ltd.