Synthesis, Chiral Resolution, and Enantiopharmacology of a Potent 2,3-Benzodiazepine Derivative as Noncompetitive AMPA Receptor Antagonist
作者:Maria Zappalà、Giovanna Postorino、Nicola Micale、Salvatore Caccamese、Nunziatina Parrinello、Giovanni Grazioso、Gabriella Roda、Frank S. Menniti、Giovambattista De Sarro、Silvana Grasso
DOI:10.1021/jm050552y
日期:2006.1.1
This paper describes the synthesis of racemic 3,5-dihydro-5-methyl-7,8-methylenedioxy-4H-2,3-benzodiazepin-4-one (+/-)-5, attempted stereoselective synthesis of its enantiomers, chiral HPLC resolution of the racemate, and assignment of the absolute configuration. Enantiomer (5S)-(-)-5 is provided with an in vivo anticonvulsant activity 8 times higher than its enantiomer (5R)-(+)-5. This result is confirmed
本文描述了外消旋的3,5-二氢-5-甲基-7,8-亚甲基二氧基-4H-2,3-苯并二氮杂-4--4-(+/-)-5的合成,其对映异构体手性的立体选择性合成尝试外消旋体的HPLC分辨率,以及绝对构型的分配。对映异构体(5S)-(-)-5具有比其对映异构体(5R)-(+)-5高8倍的体内抗惊厥活性。该结果在体外测试中得到了证实,即在表达α-氨基-3-羟基-的大鼠小脑颗粒细胞的原代培养物中,抑制海藻酸盐诱导的[Ca(2 +)](i)增加的能力得到了证实。 5-甲基-4-异恶唑丙酸(AMPA)受体。还评估了化合物(+/-)-5在AMPA和N-甲基-d-天冬氨酸(NMDA)受体上的结合亲和力。