Novel Hypotensive Agents from <i>Verbesina </i><i>c</i><i>aracasana</i>. 8. Synthesis and Pharmacology of (3,4-Dimethoxycinnamoyl)-<i>N</i>-agmatine and Synthetic Analogues<sup>1</sup>
作者:Marco Carmignani、Anna Rita Volpe、Bruno Botta、Romulo Espinal、Stella C. De Bonnevaux、Carlo De Luca、Maurizio Botta、Federico Corelli、Andrea Tafi、Rosario Sacco、Giuliano Delle Monache
DOI:10.1021/jm001017v
日期:2001.8.1
The more polar metabolites from the Venezuelan plant Verbesina caracasana, i.e., N(3)-prenylagmatine, (3,4-dimethoxycinnamoyl)-N(1)-agmatine, agmatine, and galegine (prenylguanidine), previously reported (Delle Monache, G.; et al. BioMed. Chem. Lett. 1999, 9, 3249-3254), have been synthesized following a biosynthetic strategy. The pharmacologic profiles of various synthetic analogues of (3,4-dimetho
来自委内瑞拉植物Verbesina caracasana的极性更强的代谢物,即以前报道的N(3)-prenylagmatine,(3,4-dimethoxycinnamoyl)-N(1)-胍丁胺,胍丁胺和半胱氨酸(异戊二烯胍) ;等; BioMed.Chem.Lett.1999,9,3249-3254)是按照生物合成策略合成的。还分析了(3,4-dimethoxycinnamoyl)-N(1)-胍丁胺(G5)的各种合成类似物的药理特性,以阐明这些化合物的构效关系。发现具有(E)-构型和/或具有对甲氧基苯甲酰基部分的衍生物可引起较高的降压作用,这与心脏正性肌力的轻微增加(在某些情况下与剂量无关)相关,且变化很大。并没有明显的计时反应,仅在较高剂量时,具有呼吸抑制作用。(E)-G5的烷基链中亚甲基数的增加(增加到6个)或减少(减少到2个)都没有改变血压反应,而正性正性变力反应却略有增加。在药理