Synthesis and antihypertensive activity of pyran oxygen and amide nitrogen replacement analogs of the potassium channel activator cromakalim
作者:Valerie A. Ashwood、Frederick Cassidy、John M. Evans、Stefania Gagliardi、Geoffrey Stemp
DOI:10.1021/jm00115a015
日期:1991.11
The synthesis and oral antihypertensive activity in conscious spontaneously hypertensive rats of two new series of compounds related to the prototype potassium channel activator cromakalim (1) are described. In the first series, replacement of the benzopyran oxygen atom by nitrogen or methylene led to the 1,2,3,4-tetrahydroquinoline 12 and 1,2,3,4-tetrahydronaphthalene 13, which were both less active
描述了与原型钾通道活化剂cromakalim(1)有关的两种新系列化合物在自发性高血压大鼠中的合成和口服降压活性。在第一个系列中,用氮或亚甲基取代苯并吡喃的氧原子产生1,2,3,4-四氢喹啉12和1,2,3,4-四氢萘13,它们的活性均低于1。与先前发现的1及其脱水类似物28的等效活性相反,发现二氢萘27的活性高于13。在第二系列中,与克罗马卡林相关的无环酰胺中的C(4)酰胺氮原子被亚甲基制得的酮16的活性低于相应的酰胺15。但是,用N取代16中的4-丙酮基取代基,如化合物22中的N-二甲基乙酰氨基导致活性显着增强。因此,本文中描述的化合物说明了苯并吡喃氧和C(4)取代基对cromakalim系列钾通道活化剂中降压活性的重要性。