Nucleosides and nucleotides. 103. 2-Alkynyladenosines: a novel class of selective adenosine A2 receptor agonists with potent antihypertensive effects
作者:Akira Matsuda、Misao Shinozaki、Toyofumi Yamaguchi、Hiroshi Homma、Rie Nomoto、Tadashi Miyasaka、Yohko Watanabe、Toichi Abiru
DOI:10.1021/jm00080a007
日期:1992.1
Additionally, we describe how hypotensive activity and heart rate decrease brought on by 5 and some other compounds with spontaneously hypertensive rats are proportional to the order of the potency to both A1 and A2 binding affinities. Thus, 2-alkynyladenosines are interesting and promising as antihypertensive agents that should be considered for further detailed preclinical evaluation.
描述了一系列2-炔基腺苷在A1和A2腺苷受体上的合成和受体结合活性。在含三乙胺的N,N-二甲基甲酰胺中,在双(三苯基膦)二氯化钯和碘化亚铜的存在下,钯催化的2-碘腺苷(4a)与各种末端炔的交叉偶联反应生成2-炔基腺苷(5a-r)。一种经济的合成方法,用于制备9a(2,3,5-三-O-乙酰基-1-β-D-呋喃呋喃糖基)-6-氯-2-碘代嘌呤++ +(2),这是4a的前体,也包括在内。2-(1-辛炔-1-基)腺苷(5e)和2-(1-乙炔-1-基)腺苷(9)的几种转化反应以及6-氯嘌呤衍生物11和8的相似交叉偶联反应还报道了带有1-辛炔的-溴腺苷(13)。在大鼠脑中针对A1和A2腺苷受体结合活性进行测试的许多这类2-炔基腺苷对A2腺苷受体具有选择性。其中,2-(1-己炔-1-基)腺苷(5c)对A1和A2受体的亲和力最高,Ki值分别为126.5和2.8 nM。讨论了这一系列化合物的结构活性关系,包