.alpha.-Adrenergic agents. 1. Direct-acting .alpha.1 agonists related to methoxamine
作者:R. M. DeMarinis、W. M. Bryan、D. H. Shah、J. P. Hieble、R. G. Pendleton
DOI:10.1021/jm00144a012
日期:1981.12
A series of phenylethylamines related to methoxamine has been prepared and evaluated for direct alpha 1-receptor agonist activity. It has been observed that for open-chain compounds such as methoxamine, in which the amine-containing portion is free to adopt numerous conformations, an hydroxyl group is necessary for direct alpha 1-adrenergic activity. When the hydroxyl is removed, however, the direct
已经制备了一系列与甲氧胺有关的苯乙胺,并对其直接的α1受体激动剂活性进行了评估。已经观察到,对于其中含胺部分自由地采用许多构象的开环化合物如甲恶胺,羟基对于直接的α1-肾上腺素能活性是必需的。但是,当除去羟基时,除非胺被引入到更空间确定的结构中,否则活性的直接成分将大大降低。根据我们的研究,我们得出结论,为了使苯乙胺作为直接的α1受体激动剂具有活性,它应具有相对于取代的苯环而言处于完全延伸构象的β氮。为了获得最佳效价,氮应环外成饱和的六元环。只要胺占据相对于分子的芳族部分的空间的明确定义的区域,就可以进一步将环外或环内结合到另外的环中。一些更有效的化合物作为α1受体激动剂的ED50值约为1 X 10(-7)M。