2-(3,4-Dichlorophenyl)-N-methyl-N-[2-(1-pyrrolidinyl)-1-substituted-ethyl]-acetamides: the use of conformational analysis in the development of a novel series of potent opioid .kappa. agonists
作者:Gerard F. Costello、Roger James、John S. Shaw、Anthony M. Slater、Neil C. J. Stutchbury
DOI:10.1021/jm00105a027
日期:1991.1
describes the synthesis of a series of N-[2-(1-pyrrolidinyl)ethyl]acetamides (1), methylated at C1 and/or C2 of the ethyl linking group, and their biological evaluation as opioid kappa agonists. Conformational analysis of corresponding desaryl analogues 2 suggested that only those compounds capable of occupying an energy minimum close to that of the known kappa agonist N-[2-(1-pyrrolidinyl)cyclohexyl]
本文介绍了一系列在乙基连接基团的C1和/或C2处甲基化的N- [2-(1-吡咯烷基)乙基]乙酰胺(1)的合成及其作为阿片类κ激动剂的生物学评价。相应的脱芳基类似物2的构象分析表明,只有那些能占据最小能量接近已知的Kappa激动剂N- [2-(1-吡咯烷基)环己基]乙酰胺U-50488的化合物才可能具有Kappa激动剂性能。从手性氨基酸开始,在乙基连接部分的C1处引入了其他烷基和芳基取代基,得到的化合物能够采用与U-50488相同的构象。其中最有效的是2-(3,4-二氯苯基)-N-甲基-N-[(1S)-1-苯基-2-(1-吡咯烷基)乙基]乙酰胺(8),