Synthesis and structure-activity relationships of 1-substituted 4-(1,2-diphenylethyl)piperazine derivatives having narcotic agonist and antagonist activity
作者:Kagayaki Natsuka、Hideo Nakamura、Yoshinori Nishikawa、Toshiyuki Negoro、Hitoshi Uno、Haruki Nishimura
DOI:10.1021/jm00393a017
日期:1987.10
Racemates and enantiomers of 1-substituted 4-[2-(3-hydroxyphenyl)-1-phenylethyl]piperazine derivatives (3-18) were synthesized, and their analgesic and other pharmacological activities and structure-activity relationships were investigated. The S-(+) enantiomers of 2a, 5, 7, 9, 10, and 15-18 had a stronger analgesic activity than their R-(-) enantiomers; analgesic activity of the strongest one [(S)-(+)-10]
合成了1-取代的4- [2-(3-(羟基苯基)-1-苯基乙基]哌嗪衍生物(3-18)的外消旋体和对映体,并研究了它们的止痛及其他药理活性和构效关系。2a,5、7、9、10和15-18的S-(+)对映体比其R-(-)对映体具有更强的镇痛活性。最强的一种[(S)-(+)-10]的镇痛活性是吗啡的105倍。这些化合物的S-(+)对映异构体相对于其(C-9)不对称中心具有与吗啡相反的构型,但与Met5-脑啡肽的酪氨酸残基的构型相同。16和18的R-(-)对映体显示出麻醉拮抗剂活性,而S-(+)对映体则没有。(R)-(-)-18具有与喷他佐辛相当的镇痛和麻醉剂拮抗活性,但没有明显的身体依赖性。从这些结果表明,与吗啡及其替代物相比,这些化合物表现出不常见的对映选择性,并且属于具有有效止痛活性的新化合物系列。