The Structure of the Lichen Depsidones Fulgidin and Isofulgidin

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 1990 English Publisher:CSIRO PublishingJournal:Australian Journal of Chemistry, volume 43, pages 419-425 (issn: 0004-9425, eissn: 1445-0038,

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Authors: AA Birkbeck; MV Sargent; JA Elix;

doi: 10.1071/ch9900419

The Structure of the Lichen Depsidones Fulgidin and Isofulgidin

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Abstract

The depsidone isofulgidin (1) (2,4,7-trichloro-3-hydroxy-8-methoxy-1,6-dimethyl-11H-dibenzo-[ b,el [1,4]dioxepin-11-one), has been isolated from the lichen Rinodina dissa together with atranorin and diploicin (3). lsofulgidin (1) has also been detected in the lichens Hafellia parastata and Fulgensia canariensis. The structure of the isomeric lichen depsidone fulgidin has been established as 2,4,9-trichloro-3-hydroxy-8-methoxy-1,6-dimethyl-11H-dibenzo[ b,e ][1,4]dioxepin-11-one (4) by unambiguous synthesis.

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