Structure-activity studies of fluoroaljyl-substituted γ-butyrolactone and γ-thiobutyrolactone modulators of GABAA receptor function
作者:Daniel J. Canney、Hwang-Fun Lu、Ann C. McKeon、Kong-Woo Yoon、Kun Xu、Katherine D. Holland、Steven M. Rothman、James A. Ferrendelli、Douglas F. Covey
DOI:10.1016/s0968-0896(97)10006-2
日期:1998.1
Dihydro-2(3H)-furanones (gamma-butyrolactones) and dihydro-2(3H)-thiophenones (gamma-thiobutyrolactones) containing fluoroalkyl groups at positions C-3, C-4, and C-5 of the heterocyclic rings were prepared. The anticonvulsant/convulsant activities of the compounds were evaluated in mice. Brain concentrations of the compounds were determined and the effects of the compounds on [35S]-tert-butylbicyclophosphorothionate
制备在杂环的C-3,C-4和C-5位含有氟代烷基的二氢-2(3H)-呋喃酮(γ-丁内酯)和二氢-2(3H)-噻吩酮(γ-硫代丁内酯) 。在小鼠中评估了化合物的抗惊厥/惊厥活性。测定了化合物的脑浓度,并研究了化合物对与GABAA受体微毒素位点结合的[35S]-叔丁基双环磷酸环硫酸酯([35S] TBPS)的影响。使用电生理方法和培养的大鼠海马神经元研究了这些化合物对GABAA受体功能的影响。C-3处的氟化作用会对化合物的药理活性产生微妙或明显的影响。如3-(1)所示,在乙基的亚甲基碳上氢被氟取代时,1-二氟乙基)二氢-3-甲基-2(3H)-呋喃酮(1)的抗惊厥作用与相应的烷基取代类似物相比没有太大变化。形成鲜明对比的是,如在二氢-3-甲基-3-(2,2,2-三氟乙基)-2(3H)-呋喃酮(3)中一样,在乙基的甲基碳上氟化可产生具有惊厥活性的化合物。 。这种惊厥活性似乎是由于该化合物对GABA