Room-Temperature Aromatization of Tetrahydro-β-carbolines by 2-Iodoxybenzoic Acid: Utility in a Total Synthesis of Eudistomin U
摘要:
2-Iodoxybenzoic acid is a convenient reagent for the dehydrogenation of tetrahydro-beta-carbolines to their aromatic forms under mild conditions. The utility of the method was demonstrated in a total synthesis of the marine indole alkaloid eudistomin U.
establishment of some acid-acid-catalyzed tandem reactions. Addition of MB to acid-catalyzed reaction system not only allowed the use of some basic amines as substrates, which are generally incompatible with the acid conditions, but also enabled the successful synthesis of many important nitrogen-containing heterocycles, such as β-carbolines, pyridines, and quinazolines, in a straightforward manner.