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The structure of chalybaeizanic acid and quaesitic acid, two new lichen depsidones related to salazinic acid

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Date

1999

Authors

Elix, John
Wardlaw, Judith

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Volume Title

Publisher

CSIRO Publishing

Abstract

The depsidones chalybaeizanic acid (1,4,10-trihydroxy-8-methyl-3,7-dioxo-1,3-dihydro-7H-isobenzofuro-[4,5-b][1,4] benzodioxepin-5,11-dicarbaldehyde) (4) and quaesitic acid (11-formyl-1,4,10-trihydroxy-8-methyl-3,7-dioxo-1,3-dihydro-7H-isobenzofuro[4,5- b][1,4]benzodioxepin-5-methyl hydrogen fumarate) (5) have been isolated from the lichens Xanthoparmelia amphixanthoides and Hypotrachyna quaesita respectively, and their structures determined by a combination of spectroscopic evidence, partial synthesis, derivatization or degradation reactions.

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Citation

URI

http://hdl.handle.net/1885/90643

Collections

ANU Research Publications

Source

Australian Journal of Chemistry

Type

Journal article

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