N-Substituted Phenoxazine and Acridone Derivatives: Structure–Activity Relationships of Potent P2X4 Receptor Antagonists
作者:Victor Hernandez-Olmos、Aliaa Abdelrahman、Ali El-Tayeb、Diana Freudendahl、Stephanie Weinhausen、Christa E. Müller
DOI:10.1021/jm300845v
日期:2012.11.26
have potential as drugs for the treatment of neuropathic pain and neurodegenerative diseases. In the present study the discovery of phenoxazine derivatives as potent P2X4 antagonists is described. N-Substituted phenoxazine and related acridone and benzoxazine derivatives were synthesized and optimized with regard to their potency to inhibit ATP-induced calcium influx in 1321N1 astrocytoma cells stably
P2X4受体拮抗剂作为治疗神经性疼痛和神经退行性疾病的药物具有潜力。在本研究中,描述了吩恶嗪衍生物作为有效的P2X4拮抗剂的发现。合成并优化了N取代的吩恶嗪以及相关的a啶酮和苯并恶嗪衍生物,以抑制在被人P2X4受体稳定转染的1321N1星形细胞瘤细胞中ATP诱导的钙内流。此外,还研究了物种选择性(大鼠,小鼠,人类)和受体亚型选择性(相对于P2X1,2,3,7)。本系列中最有效的P2X4拮抗剂是N-(苄氧羰基)吩恶嗪(26,PSB-12054),IC 50与其他人P2X受体亚型相比,具有0.189μM的选择性和良好的选择性。N-(对-甲基苯基磺酰基)苯恶嗪(21,PSB-12062)被确定为选择性P2X4拮抗剂,在所有三个物种中均具有同等效力(IC 50:0.928-1.76μM)。该化合物显示出变构作用机理。本研究代表了P2X4拮抗剂的第一个结构-活性关系分析。