
TY  - JOUR
A1  - Elix, JA 
A1  - Engkaninan, U 
T1  - The structure of lividic acid. A depsidone from the lichen <I>Parmelia formosana</I>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 1
SP  - 203
EP  - 207
KW  - 
UR  - https://doi.org/10.1071/CH9760203 
N2  - The depsidone, lividic acid [1'-carboxy-2',3-dihydroxy-4.methoxy-6-(2&quot;-oxoheptyl)-6-pentyldepsidone](1) has been isolated from the lichen Parmelia formosana Zahlbr. The structure of this compound followed from a combination of spectroscopic properties and chemical interconversions. The overall substitution pattern of this depsidone was confirmed by methylation with excess diazomethane, whereupon methyl 3-methoxy-2',4,4'-tri-O-methylisophysodate was obtained. Further, lividic acid was synthesized from 3-hydroxyphysodic acid by methylation of the corresponding benzyl ester and subsequent hydrogenolysis. 
ER  -

