Stereoisomers of N-[1-(2-Hydroxy-2-phenylethyl)-3-methyl-4-piperidyl]- N-phenylpropanamide: Synthesis, Stereochemistry, Analgesic Activity, and Opioid Receptor Binding Characteristics
作者:Zhi-Xian Wang、You-Cheng Zhu、Wen-Qiao Jin、Xin-Jian Chen、Jie Chen、Ru-Yun Ji、Zhi-Qiang Chi
DOI:10.1021/jm00018a026
日期:1995.9
while the corresponding antipodes 1d,c were the least potent compounds among the eight isomers. In agreement with pharmacological results, both 1a,b also had the highest receptor affinity and selectivity for the opioid mu receptor. The ratio of K(i)(DPDPE)&K(i)(DAMGO) was 22 800 for 1a and 22 500 for 1b. All isomers except 1c,d strongly inhibited the electrically evoked smooth muscle contraction of
N- [1-(2-羟基-2-苯基乙基)-3-甲基-4-哌啶基] -N-苯基丙酰胺(奥芬太尼,1)是一种非常有效的镇痛药,对阿片类药物受体具有高亲和力和选择性。1中有3个手性碳原子,因此可能有8个旋光异构体。光学活性的3-甲基-N-苯基-4-哌啶胺(5a-d)与(R)-或(S)-苯乙烯氧化物的反应分别生成了8种光学活性中间体,随后将其转化为8种光学活性的1( 1a-h)。1a-h的绝对构型是通过(3R,4S,2'R)-(-)-cis-1a和(3R,4R,2'S)-(-)-trans-1g的X射线分析确定的。镇痛作用(小鼠,ip,热板)显示出极大的立体差异。(3R,4S,2'R)-(-)-cis-1a和(3R,4S,2'S)-(+)-cis-1b的ED50值,它们是八个异构体中最有效的异构体,分别为0.004 65(吗啡的2990倍)和0.001 06 mg / kg(吗啡的13100倍),而