A gold-catalyzed domino process to the steroid framework.
The facile formation of the B and C ring of rac-desoxyequilenin and of a chrysenone derivative in just one preparative step is demonstrated, applying a gold-catalyzed domino process, which involves a benzopyrylium cation as the key intermediate and an intramolecular [3 + 2] cycloaddition as the key step.
Hildebrandt
Dirk
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1 Fakultät für Chemie, Ruhr-Universität Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany.
Dyker
Gerald
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