
TY  - JOUR
A1  - Elix, John A. 
A1  - Wardlaw, Judith H. 
T1  - The Structure of Chalybaeizanic Acid and Quaesitic Acid, Two New Lichen Depsidones Related to Salazinic Acid
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1999
VL  - 52
IS  - 7
SP  - 713
EP  - 716
KW  - 
UR  - https://doi.org/10.1071/CH99056 
N2  - The depsidones chalybaeizanic acid (1,4,10-trihydroxy-8-methyl-3,7-dioxo-1,3-dihydro-7 H-isobenzofuro- &#91;4,5-b&#93;&#91;1,4&#93;benzodioxepin-5,11-dicarbaldehyde) (4) and quaesitic acid (11-formyl-1,4,10-trihydroxy-8- methyl-3,7-dioxo-1,3-dihydro-7 H-isobenzofuro&#91;4,5-b&#93;&#91;1,4&#93;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. 
ER  -

