Enantiomers of 3-(3,4-dihydroxyphenyl)- and 3-(3-hydroxyphenyl)-N-n-propylpiperidine: central pre- and postsynaptic dopaminergic effects and pharmacokinetics
作者:Hans Rollema、Dora Mastebroek、Haakan Wikstroem、Kjell Svensson、Arvid Carlsson、Staffan Sundell
DOI:10.1021/jm00160a016
日期:1986.10
of the metabolic conversion of the enantiomers of 3-(3-hydroxyphenyl)-N-n-propylpiperidine (3-PPP) into their catechol analogues, the enantiomers of 3-(3,4-dihydroxyphenyl)-N-n-propylpiperidine. These isomers are both shown to be excellent substrates for COMT, with a slight preference for the S-(-) enantiomer. Assessment of the dopaminergic activity of these catechols and the results from the determination
这项研究强调了3-(3-羟苯基)-Nn-丙基哌啶(3-PPP)对映异构体代谢为儿茶酚类似物3-(3,4-二羟苯基)-Nn-丙基哌啶对映异构体代谢的重要性。这些异构体均显示出是COMT的优良底物,略微偏爱S-(-)对映异构体。对这些邻苯二酚的多巴胺能活性的评估以及对3-PPP对映异构体及其代谢产物的脑水平测定的结果表明,这些代谢产物可能不会改变针对(R)-(+)-和( S)-(-)-3-PPP。单酚类转化为儿茶酚代谢物的比例仅为1-5%,而且这些儿茶酚代谢物进一步转化为甲氧基化类似物的速度非常快。然而,进行了非常有趣的观察,当通过托酚酮抑制COMT并随后以高剂量(S)-(-)-3-PPP(ip)处理大鼠时,会引起突触后多巴胺能活性。对于未进行托酚酮预处理的(S)-(-)-3-PPP,从未见过这种情况,这可能表明在这种特殊情况下,儿茶酚代谢产物会影响(S)-(-)-3-的体内药理作用PPP。