Drug metabolism-based design, synthesis, and bioactivities of 1-(2,6-dimethylphenoxy)-2-(3,4-dimethoxyphenylethylamino)propane hydrochloride (DDPH) analogs as α1-adrenoceptors antagonists
作者:Bao-Min Xi、Zhen-Zhou Jiang、Jian-Wei Zou、Pei-Zhou Ni、Wen-Hua Chen
DOI:10.1016/j.bmc.2010.12.020
日期:2011.1
hydrochloride (DDPH) is a potent α1-adrenoceptor antagonist that is currently under Phase II clinic trials. However, the fast metabolism has restricted its further use. In this paper, 11 DDPH analogs were designed according to the probable metabolism pathways of DDPH, and featured the structures of halogen, methyl, and cyano groups at the 3-, or 4-position of aromatic ring A to block the hydroxylation
1-(2,6-二甲基苯氧基)-2-(3,4- dimethoxyphenylethylamino)丙烷盐酸盐(DDPH)是一种强效α 1 -肾上腺素能受体拮抗剂,它是目前在II期临床试验。但是,快速代谢限制了它的进一步使用。本文根据DDPH可能的代谢途径设计了11种DDPH类似物,并以芳香环A的3或4位上的卤素,甲基和氰基的结构为特征,以阻止羟基化。芳香环B的3或4位的羟基延长了反应时间。这些化合物由取代的苯氧基丙酮与取代的苯乙胺还原胺化而以中等至良好的产率合成,并用1进行了全面表征1 H NMR,IR和HRMS。生物学评估表明,大多数化合物表现出较强的阻断作用,并具有中等至良好的降压活性。显然,与它们相应的具有4-OMe / 3-OMe(以及3-OH / 4-OMe)的类似物相比,在B组上具有4-OH / 3-OMe的化合物表现出更高的阻断活性和更长的持续时间。其中,在环A的4-位具有溴基且在基团B上具有4-OH