Thioamide derivatives of cannabinoids. A study of the influence of the thioamide function on regiochemistry in the synthesis of thioamide cannabinoids from 2,4-dihydroxybenzothioamides
作者:Jacek Sośnicki、Tadeusz Jagodziński、Miroslawa Królikowska
DOI:10.1002/jhet.5570360434
日期:1999.7
Several thiocarbamoyl derivatives of cannabinoids were obtained in the collidine-catalysed condensation of 2,4-dihydroxybenzothioamides with citral and citronellal. The thioamide function was found to change the regioselective preferences of the reaction as compared with the known cannabinoid syntheses from hydroxyacetophenones. The experimental results and theoretical (FMO theory) considerations made
大麻素的几种硫代氨基甲酰基衍生物是在2,4-二羟基苯并硫代酰胺与柠檬醛和香茅醛的可力丁催化缩合反应中获得的。与已知的由羟基苯乙酮合成的大麻素相比,发现硫代酰胺功能改变了反应的区域选择性偏好。实验结果和理论(FMO理论)的考虑使推进反应机理成为可能。在三氟化硼/乙酸1:2络合物或氯化铝在硝基甲烷中的存在下,开发了从间苯二酚和异硫氰酸酯合成起始2,4-二羟基苯并硫代酰胺的简便方法。