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Ether-linked biflavonoids from Quintinia acutifolia
Jyamani Ariyasena1, Seung-Hwa Baek, Nigel B Perry
1Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand.
Abstract:
The New Zealand tree Quintinia acutifolia has yielded four biflavonoids, the new 2,3,2'',3''-tetrahydroochnaflavone (3), and its 7,7''-di-O-methyl derivative (1). The rare 7-O-methyl-2,3,2'',3''-tetrahydroochnaflavone (2) and 2'',3''-dihydroochnaflavone (4), both previously identified only from members of the Ochnaceae, were also isolated. Structures were determined by spectroscopic methods. This is the first report of biflavonoids from the Grossulariaceae.
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