作者:Violetta Cecchetti、Vincenzo Calderone、Oriana Tabarrini、Stefano Sabatini、Enrica Filipponi、Lara Testai、Roberto Spogli、Enrica Martinotti、Arnaldo Fravolini
DOI:10.1021/jm030791q
日期:2003.8.1
functionalized at the N-4 and C-6 positions, arising from the replacement of a benzopyran-based structure of cromakalim with a 1,4-benzothiazine nucleus, has been synthesized as potassium channel openers (KCOs). Most of the tested compounds show high vasorelaxant potency that is considerably higher than that of the reference levcromakalim (LCRK). In the presence of the well-established selective K(ATP)
合成了一系列1,4-苯并噻嗪类化合物,适合在N-4和C-6位置官能化,这是由于用1,4-苯并噻嗪核取代了克罗马卡林的苯并吡喃基结构而产生的,作为钾通道开放剂(KCO)。大多数测试化合物显示出高血管舒张效力,远高于参考左旋克马卡林(LCRK)。在存在公认的选择性K(ATP)阻断剂格列本脲的情况下,血管舒张作用以竞争性方式被拮抗,表明K(ATP)通道参与了它们的药理作用。讨论了与N-4和C-6取代基相关的结构活性关系的某些方面。通过在N-4位的环戊烯酮环与在C-6位的吸电子基团(例如硝基,三氟甲基或氰基)偶联,可以实现最高水平的活性。化合物4c,5c和6c的血管舒张效能比LCRK高至少10000倍,因此成为迄今为止确定的最有效的KCO。