We have prepared a series of new and some literature-reported GABA-amides and determined their effect on the activation of GABAA-receptors expressed in CHO cells. Special attention was paid to the purification of the target compounds to remove even traces of GABA contaminations, which may arise from deprotection steps in the synthesis. GABA-amides were previously reported to be partial, full or superagonists. In our hands these compounds were not able to activate GABAA-receptor channels in whole-cell patch-clamp recordings. New GABA-amides, however, gave moderate activation responses with a clear structure–activity relationship suggesting some of these compounds as promising molecular tools for the functional analysis of GABAA-receptors.
我们已经准备了一系列新的以及一些文献报道的
GABA酰胺,并确定了它们对CHO细胞中表达的
GABAA受体的激活作用。我们特别注意了目标化合物的纯化,以去除可能来自合成中去保护步骤的
GABA污染的微量。先前报道
GABA酰胺可能是部分激动剂、完全激动剂或超激动剂。然而,在我们的实验中,这些化合物无法激活
GABAA受体通道,在全细胞膜片钳记录中。然而,新的
GABA酰胺产生了适度的激活反应,具有明确的结构-活性关系,表明其中一些化合物可能是
GABAA受体功能分析的有希望的分子工具。