Sodium channel binding and anticonvulsant activities for the enantiomers of a bicyclic 2,4-oxazolidinedione and monocyclic models
作者:Wayne J. Brouillette、Gary L. Grunewald、George B. Brown、Timothy M. DeLorey、M. Shamim Akhtar、Gang Liang
DOI:10.1021/jm00127a029
日期:1989.7
None of these isomers exhibited stereoselective effects in the sodium channel assay, and only modest enantioselectivities were observed for 2 and 3 in the anticonvulsant assays. (R)-(-)-1 was, however, 4 times more toxic than (S)-(+)-1 in the rotorod test, and due to its larger protective index, (S)-(+)-1 exhibited greater therapeutic potential than either (R)-(-)-1 or racemic 1.
外消旋的7-苯基-9,10-二氧杂-1-氮杂-8-氧杂双环[5.2.1]癸烷(1),一种我们先前报道的可能是钠通道抗惊厥药的双环2,4-恶唑烷二酮,已分解成它的对映体形式,确定绝对构型,并评估立体异构体的相对钠通道结合和整个动物抗惊厥活性。用两个单环模型进行了类似的研究,即5-乙基-5-苯基-2,4-恶唑烷二酮(2)和5-乙基-3-甲基-5-苯基-2,4-恶唑烷二酮(3)。这些异构体在钠通道试验中均未显示立体选择性作用,在抗惊厥试验中仅观察到2和3适度的对映选择性。然而,在转子试验中,(R)-(-)-1的毒性是(S)-(+)-1的4倍,并且由于其较大的保护指数,