Mammalian Alkaloids: Configurations of Optically Active Salsoline- and 3′,4′-Dideoxynorlaudanosoline-1-carboxylic Acids
作者:Maria Chrzanowska、Bernhard Schönenberger、Arnold Brossi、Judith L. Flippen-Anderson
DOI:10.1002/hlca.19870700707
日期:1987.11.4
absolute configuration of the reaction products was established by X-ray analysis of the optically active hydantoin (+)-8A. Hydrolysis of the methyl isoquinolinecarboxylates 2A,B with 48% HBr soln. at reflux afforded the desired optically active 3′,4′-dideoxynorlaudanosoline-1-carboxylic acids 1A,B required for enzyme-inhibition studies. Details of the X-ray diffraction analysis of (+)-methyl salsoline-1-carboxylate
(±)-甲基6,7-二甲基-3',4'-二脱氧去甲氧月桂醇-1-羧酸酯((±)-2)的旋光异构体的合成是通过(±)-2与(+)-的反应来完成的(R)-1-苯乙基异氰酸酯,脲非对映异构体(-)- 4A和(+)- 4B的分离以及尿素在BuOH回流中的醇解。对分离出的光学活性异喹啉羧酸酯2A,B和乙内酰脲8A,B进行了表征。通过对光学活性乙内酰脲(+)- 8A的X射线分析来确定反应产物的绝对构型。甲基异喹啉羧酸酯2A的水解,B含48%的HBr溶液。在回流下,得到酶抑制研究所需的所需的旋光的3',4'-二脱氧去氧月桂醇-1-羧酸1A,B。包括较早制备的(+)-甲基salsoline-1-羧酸氢溴酸盐((+)- 11A ·HBr)的X射线衍射分析的细节。的CD谱(+) - (小号) -甲基-6,7-二甲基-3',4'- dideoxynorlaudanosoline -1-羧酸乙酯氢溴酸盐((+) -