Tricyclic Indole-2-carboxylic Acids: Highly in Vivo Active and Selective Antagonists for the Glycine Binding Site of the NMDA Receptor
作者:Seiji Katayama、Nobuyuki Ae、Toru Kodo、Shuji Masumoto、Shinji Hourai、Chika Tamamura、Hiroyasu Tanaka、Ryu Nagata
DOI:10.1021/jm020239l
日期:2003.2.1
3S-(-)-4 such as 3a, 3f, and 3g which had certain zwitterionic anilides showed high affinity to the NMDA-glycine binding site. The absolute configuration of 3S-(-)-4 was confirmed by X-ray crystallographic analysis. In particular, 3g (SM-31900) was found to be a highly active glycine antagonist for both in vitro and in vivo assays (K(i) = 1.0 +/- 0.1 nM, ED(50) = 2.3 mg/kg, iv) and also showed high
合成了一系列三环吲哚-2-羧酸衍生物,并通过放射性配体结合测定和在小鼠NMDA诱发的癫痫发作模型中的抗惊厥作用进行了评估。在它们之中,具有某些两性离子苯甲酸酯的3S-(-)-4的衍生物,例如3a,3f和3g,显示出对NMDA-甘氨酸结合位点的高亲和力。通过X射线晶体学分析确认了3S-(-)-4的绝对构型。特别是,在体外和体内试验中,发现3g(SM-31900)是一种高活性甘氨酸拮抗剂(K(i)= 1.0 +/- 0.1 nM,ED(50)= 2.3 mg / kg,iv ),并且还显示出对甘氨酸位点的高选择性。此外,3g在水性介质中的溶解度足够(在pH 7.4时大于10 mg / mL),可用于静脉注射药物。