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Synthesis 2004(13): 2099-2102
DOI: 10.1055/s-2004-829196
DOI: 10.1055/s-2004-829196
PAPER
© Georg Thieme Verlag Stuttgart · New York
A Facile Synthesis of the Angucyclinone Antibiotic (+)-Rubiginone B2 Involving the BF3-Mediated Diels-Alder Reaction of Juglone
Further Information
Received
13 February 2004
Publication Date:
13 August 2004 (online)
Publication History
Publication Date:
13 August 2004 (online)
Abstract
A short synthesis of (+)-rubiginone B2 is reported. The BF3-mediated Diels-Alder reaction of juglone and (R)-3-methyl-1-vinylcyclohexene followed by aromatization gave the anthraquinone as the desired regioisomer, which was converted into the target antibiotic after a two-step operation.
Key words
angucyclinone antibiotics - asymmetric synthesis - quinines - Diels-Alder reactions - photooxidations
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