Oxidation chemistry of the endogenous central nervous system alkaloid salsolinol-1-carboxylic acid
作者:Fa Zhang、Glenn Dryhurst
DOI:10.1021/jm00053a002
日期:1993.1
The oxidation chemistry of salsolinol-1-carboxylic acid (1), an alkaloid endogenous to the central nervous system which is elevated as a result of ethanol consumption, has been studied by electrochemical approaches at pH 7.0 in aqueous solution. The first voltammetric oxidation peak of Ia of 1 at pH 7.0 occurs at Ep = +0.116 V, indicating that this alkaloid is a very easily oxidized compound. The peak
已经通过在pH 7.0下的水溶液中的电化学方法研究了中枢神经系统内源性生物碱Salsolinol-1-羧酸(1)的氧化化学,该生物碱由于乙醇的消耗而升高。在pH = 7.0时,Ia的第一个伏安氧化峰出现在Ep = +0.116 V,表明该生物碱是一种非常容易氧化的化合物。Ia峰反应为1,1,2,3,4-四氢-1-甲基-1-羧基-6,7-异喹啉二酮(8)的2e-2H +氧化,可迅速脱羧(k> 10(3) s-1)主要得到3,4-二氢-1-甲基-6,7-异喹啉二醇的醌甲基化物互变异构体(2)。后一个化合物负责观察到的第二个氧化峰IIa(1)。此峰是2e氧化为2生成的醌型中间体(9),该中间体可被水侵蚀生成3,4-二氢-1-甲基-5,7-二羟基异喹啉-6-一(13b)(很容易进一步氧化成3,4-二氢-1-甲基-5-羟基异喹啉-6,7-二酮(3))或芳构化得到1-甲基-6,7-异喹啉二醇(4)。初