Conformationally restricted κ-opioid receptor agonists: Synthesis and pharmacological evaluation of diastereoisomeric and enantiomeric decahydroquinoxalines
作者:Peter Molenveld、Renaud Bouzanne des Mazery、Geert Jan Sterk、Roy P.M. Storcken、Reshma Autar、Bram van Oss、Richard N.S. van der Haas、Roland Fröhlich、Dirk Schepmann、Bernhard Wünsch、Michael Soeberdt
DOI:10.1016/j.bmcl.2015.09.040
日期:2015.11
representing conformationally restricted analogs of κ agonists U-50,488 and GR-89,696 have been prepared. Cis/trans configured compound 7 is by far the highest binding diastereoisomer with a Ki of 0.35 nM. Racemates 4, 6, and 7 were separated into enantiomers. (+)-(4aR,5S,8aS)-Configured enantiomer 7b was identified as a high affinity (Ki = 0.25 nM) κ ligand with high selectivity over μ and δ receptors. It
已经制备了代表κ激动剂U-50,488和GR-89,696的构象受限的类似物的所有非对映异构体十氢喹喔啉。迄今为止,顺式/反式构型的化合物7是结合力最高的非对映异构体,K i为0.35 nM。外消旋体4,6,和7被分成对映体。(+)-(4a R,5 S,8a S)-配置的对映异构体7b被确定为 对μ和δ受体具有高选择性的高亲和力(K i = 0.25 nM)κ配体。与EC 50一起充当完全激动剂[ 35 S]GTPγS分析中的ECn值为2.0 nM ,而对映异构体7a的EC 50值为1000 nM。