Chronobiotic activity of N-[2-(2,7-dimethoxyfluoren-9-yl)ethyl]-propanamide. Synthesis and melatonergic pharmacology of fluoren-9-ylethyl amides
摘要:
A series of fluoren-9-yl ethyl amides (2) were synthesized and evaluated for human melatonin MT1 and MT2 receptor binding. N-[2-(2,7-dimethoxyfluoren-9-yl)ethyl]propanamide (2b) was selected and evaluated in functional assays measuring intrinsic activity at the human MT1 and MT2 receptors and demonstrated full agonism at both receptors. The chronobiotic properties of 2b were demonstrated in both acute and chronic rat models where 2b produced an acute phase advance of 32 min at 1 mg/kg and chronically entrained free-running rats with a mean effective dose of 0.23 mg/kg. Compound 2b is significantly less efficacious than melatonin in constricting human coronary artery. (C) 2004 Elsevier Ltd. All rights reserved.
端粒DNA是癌症治疗的潜在选择性靶标,因为与肿瘤相关的端粒酶调节大多数癌细胞中端粒的维持。端粒DNA的3'单链末端可以通过适当的小分子折叠成四链体结构。我们描述了一种新型的2,7-双取代的10 H-吲哚并[3,2- b ]喹啉类,与双链体DNA相比,其对四链DNA稳定的选择性增强,并且还制备了一种关键中间体。三取代喹啉的合成。