Non-prostanoid thromboxane A2 receptor antagonists with a dibenzoxepin ring system. 2
作者:Etsuo Ohshima、Hitoshi Takami、Hideyuki Sato、Shinichiro Mohri、Hiroyuki Obase、Ichiro Miki、Akio Ishii、Shiro Shirakura、Akira Karasawa、Kazuhiro Kubo
DOI:10.1021/jm00096a017
日期:1992.9
11-[2-(1-benzimidazolyl)ethylidene]-6,11-dihydrodibenz[b,e]oxep in-2- carboxylic acid derivatives and related compounds were synthesized and found to be potent TXA2/PGH2 receptor antagonists. Each compound synthesized was tested for its ability to displace [3H]U-46619 binding from guinea pig platelet TXA2/PGH2 receptors. Structure-activity relationship studies revealed that the following key elements were
合成了一系列11- [2-(1-苯并咪唑基)亚乙基] -6,11-二氢二苯并[b,e] oxep in-2-羧酸衍生物及相关化合物,发现它们是有效的TXA2 / PGH2受体拮抗剂。测试了每种合成的化合物从豚鼠血小板TXA2 / PGH2受体置换[3H] U-46619结合的能力。构效关系研究表明,增强活性需要以下关键元素:(1)在二苯并二甲苯环系统的11位上的(E)-2-(1-苯并咪唑基)亚乙基侧链和(2)a在二苯并二氧杂戊环体系的2-位上的羧基。研究还表明,该系列化合物在豚鼠血小板中与TXA2 / PGH2受体的结合亲和力与人血小板中的相关性较弱。将取代基引入苯并咪唑部分是有效的,并且(E)-11- [2-(5,6-二甲基-1-苯并咪唑基)亚乙基]钠-6,11-二氢二苯并[b,e] oxepin-2 -羧酸一水合物(57)对人血小板TXA2 / PGH2受体的亲和力最高,K(i)值为1