2,4-Di-O-methylgyrophoric acid and 2,4,5-tri-O-methylhiascic acid. New tridepsides from Parmelia damaziana
- 1 January 1981
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Chemistry
- Vol. 34 (8) , 1757-1761
- https://doi.org/10.1071/ch9811757
Abstract
The new tridepsides 2,4-di-O-methylgyrophoric acid (8) and 2,4,5-tri-O- methylhiascic acid (5) in addition to the known metabolites atranorin (9), chloroatranorin (10), ursolic acid (11), 5-O-methylhiascic acid (4) and gyrophoric acid (7) have been isolated from the lichen Parmelia damaziana. The structure of the new tridepsides has been established by total synthesis.Keywords
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