form. (-)-8-Oxa-norcocaine (3) was found to bind to the cocaine recognition site and to inhibit the dopamine transporter with potencies only about 8-fold and 4-fold, respectively, less than those of norcocaine (2). (-)-8-Oxa-pseudonorcocaine (4) as well as (+)-8-oxa-norcocaine (3) were found to be comparable in activity to (-)-oxa-norcocaine. These pharmacological findings support our earlier suggestion
为了进一步探讨
可卡因桥氮原子在与
多巴胺转运蛋白(
DAT)结合中的重要性,我们合成了先前已知的外消旋8-氧杂-北
可卡因3-6,其中氮原子已被氧取代。另外,为了避免对由于使用外消旋物质而引起的
生物学数据的错误解释,合成了其中一些类似物并以非外消旋形式对其进行了测试。发现(-)-8-Oxa-norcocaine(3)结合
可卡因识别位点并抑制
多巴胺转运蛋白,其效力分别比norcocaine(2)低约8倍和4倍。发现(-)-8-氧杂-伪
可卡因(4)以及(+)-8-氧杂-正
可卡因(3)在活性上与(-)-氧杂-正
可卡因相当。