A convenient approach to the canthin-4-one ring system: Total synthesis of the alkaloids tuboflavine and norisotuboflavine
作者:Andreas Puzik、Franz Bracher
DOI:10.1002/jhet.126
日期:2009.7
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).