6-dihydro-4H-[1,2,4]triazolo[4,3-a][1]benzazepin-1-one derivatives were synthesized and screened for their anticonvulsantactivities by the maximal electroshock (MES) test, subcutaneous pentylenetetrazol (scPTZ) test, and their neurotoxicity was evaluated by the rotarod neurotoxicity test (Tox). The results of these tests demonstrated that 8-heptyloxy-5,6-dihydro-4H-[1,2,4]triazolo[4,3-a][1]benzazepin-1-one
合成了一系列新型的8-烷氧基-5,6-二氢-4 H- [1,2,4]三唑[4,3- a ] [1]苯并ze庚因-1-酮衍生物,并通过以下方法筛选了它们的抗惊厥活性:最大电击(MES)测试,皮下戊四氮(scPTZ)测试及其神经毒性通过旋转脚架神经毒性测试(Tox)进行评估。这些测试的结果表明8-庚氧基-5,6-二氢-4 H- [1,2,4]三唑[4,3- a ] [1]苯并ze庚因-1-酮(3f)和8-己氧基-5,6-dihydro-4 H- [1,2,4] triazolo [4,3- a ] [1] benzazePIn-1-one(3e)是最有前途的化合物,有效剂量中位数为(ED 50)分别为17.6和17.9 mg / kg,而MES测试中的保护指数(PI)分别大于63.4和62.4。这些PI值高于原型抗癫痫药物卡马西平的PI值。scPTZ测试显示8-戊氧基-5,6-二氢-4 H- [1
Targeting the Polyamine Transport System with Benzazepine- and Azepine-Polyamine Conjugates
作者:Sophie Tomasi、Jacques Renault、Bénédicte Martin、Stephane Duhieu、Virginie Cerec、Myriam Le Roch、Philippe Uriac、Jean-Guy Delcros
DOI:10.1021/jm1007648
日期:2010.11.11
The polyamine transport system (PTS) whose activity is up-regulated in cancer cells is an attractive target for drug design. Two heterocyclic (azepine and benzazepine) systems were conjugated to various polyamine moieties through an amidine bound to afford 18 compounds which were evaluated for their affinity for the PTS and their ability to use the PTS for cell delivery. Structure-activity relationship studies and lead optimization afforded two attractive PTS targeting compounds. The azepine-spermidine conjugate 14 is a very selective substrate of the PTS that may serve as a vector for radioelements used for diagnoses or therapeutics in nuclear medicine. The nitrobenzazepine-spermine conjugate 28 is a very powerful PTS inhibitor with very low intrinsic cytotoxicity, able to prevent the growth of polyamine depleted cells in presence of exogenous polyamines.