N-Substituted 4-Amino-3,3-dipropyl-2(3<i>H</i>)-furanones: New Positive Allosteric Modulators of the GABA<sub>A</sub> Receptor Sharing Electrophysiological Properties with the Anticonvulsant Loreclezole
作者:Ahmed El Hadri、Ahmed Abouabdellah、Urs Thomet、Roland Baur、Roman Furtmüller、Erwin Sigel、Werner Sieghart、Robert H. Dodd
DOI:10.1021/jm011082k
日期:2002.6.1
1,4-Addition of benzylamine to 2(5H)-furanone followed by dialkylation of the 3-position with allylbromide gave (+/-)-4-benzyl-3,3-diallyl-2(3H)-furanone (8), which served as the intermediate for the synthesis of various N-substituted 4-amino-3,3-dipropyl-2(3H)-furanones (+/-)-9a-l. The compounds were evaluated for their capacity to potentiate or inhibit GABA-evoked currents in Xenopus laevis oocytes
1,4-将苄胺加到2(5H)-呋喃酮中,然后用烯丙基溴将3-位二烷基化,得到(+/-)-4-苄基-3,3-二烯丙基-2(3H)-呋喃酮(8) ,用作合成各种N-取代的4-氨基-3,3-二丙基-2(3H)-呋喃酮(+/-)-9a-1的中间体。评价化合物增强或抑制表达重组α1β2γ2GABA(A)受体的非洲爪蟾卵母细胞中GABA诱发的电流的能力。氨基甲酸苄基,乙基和烯丙基酯((R)-9a(100 microM),(+/-)-9b(100 microM),(+/-)-9c(200 microM))通过279 + /刺激GABA电流-47%,426 +/- 8%。分别为765 +/- 61%和765 +/- 61%,而苯基羧酰胺(+/-)-9f(200 microM)刺激电流为420 +/- 33%。浓度响应研究表明,化合物9c在刺激GABA电流方面的功效约为α-EMTBL(2)的两倍,α-EMTBL(2)是迄今为止已知的最有效的3