through reaction of 1-acyl-β-carbolines with Bredereck's reagent or dimethylacetamide acetals in anhydrous DMF. The intermediate enaminoketones readily undergo cyclization to the canthin-4-ones. The alkaloids tuboflavine and norisotuboflavine were prepared following this methodology. J. Heterocyclic Chem., (2009).
通过1-酰基-β-咔啉与布雷德克氏试剂或 无
水DMF中的二甲基乙酰胺
缩醛。中间体烯
氨基酮容易环化为canthin-4-ones。按照这种方法制备了
生物碱大黄素和正异
黄酮。J.杂环化学,(2009)。