The coumarin isolated from Ariemisia carvifolia WALL was proved synthetically to be 7, 8-dimethoxycoumarin and not 5, 8-dimethoxycoumarin as previously proposed. 3, 4-Dimethoxy- and 3, 6-dimethoxysalicylaldehydes gave the corresponding coumarins in good yield by the method using phosphorane reagent in N, N-diethylaniline under reflux.
从Ariemisia carvifolia WALL中分离出的
香豆素经过合成证明为7, 8-二甲氧
香豆素,而非之前提出的5, 8-二甲氧
香豆素。通过在回流条件下使用在N, N-二
乙基苯胺中反应的
磷烷试剂,3, 4-二甲氧基和3, 6-二甲氧基
香草醛得到了相应的
香豆素,产率良好。