Synthesis and Structure-Activity Relationship of a New Series of Potent Angiotensin II Receptor Antagonists: Pyrazolo(1,5-a)pyrimidine Derivatives.
作者:Takeshi SHIOTA、Teruo YAMAMORI、Katsunori SAKAI、Mitsugu KIYOKAWA、Tsunetoshi HONMA、Masayoshi OGAWA、Kunio HAYASHI、Natsuki ISHIZUKA、Ken-ichi MATSUMURA、Mariko HARA、Masafumi FUJIMOTO、Tomoji KAWABATA、Shigeyuki NAKAJIMA
DOI:10.1248/cpb.47.928
日期:——
5-a]pyrimidine-3-carboxylic acid derivatives, which are potent in vitro angiotensin II (AII) antagonists, but have no oral antihypertensive activity. Removal of the carboxylic acid and replacement of the heteroaromatic system afforded potent in vitro antagonists. Removal of the carbonyl oxygen and changing the position of the biphenyltetrazole substituent were critical to the display of oral activity. To improve the
我们已经报道了7-氧代-4,7-二氢吡唑并[1,5-a]嘧啶-3-羧酸衍生物,它们是有效的体外血管紧张素II(AII)拮抗剂,但没有口服降压活性。除去羧酸并取代杂芳族体系提供了有效的体外拮抗剂。除去羰基氧和改变联苯四唑取代基的位置对于显示口服活性至关重要。为了改善体外和口服活性,对吡唑并[1,5-a]嘧啶的3-和5-位的取代基进行了修饰。结构活性研究表明,在3位的甲基取代基对于有效的体内活性至关重要。我们介绍了一系列吡唑并[1,5-a]嘧啶衍生物的设计,合成和生物学数据,