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Communication | Regular issue | Vol 60, No. 5, 2003, pp.1049-1052
Published online, 17th March, 2003
DOI: 10.3987/COM-03-9741
Indoloquinones, Part 8. Palladium(II)-catalyzed Total Synthesis of Murrayaquinone A, Koeniginequinone A, and Koeniginequinone B

Hans-Joachim Knölker and Kethiri R. Reddy

*Institut für Organische Chemie, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden, Germany


Regioselective addition of the appropriate arylamines to 2-methyl-1,4-benzoquinone followed by a palladium(II)-catalyzed oxidative cyclization opens up an efficient route to the naturally occurring 3-methylcarbazole-1,4-quinone alkaloids murrayaquinone A, koeniginequinone A, and koeniginequinone B.