
TY  - JOUR
A1  - Elix, JA 
A1  - Elix, JA 
A1  - Naidu, R 
A1  - Naidu, R 
A1  - Laundon, JR 
A1  - Laundon, JR 
T1  - The Structure and Synthesis of 4-Oxypannaric Acid 2-Methyl Ester, a Dibenzofuran From the Lichen <I>Leproloma diffusum</I>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1994
VL  - 47
IS  - 4
SP  - 703
EP  - 714
KW  - 
UR  - https://doi.org/10.1071/CH9940703 
N2  - The structure of the major dibenzofuran present in the lichen Leproloma diffusum has been shown to be that of 4-oxypannaric acid 2-methyl ester (2-methyl hydrogen 3,4,9-trihydroxy-1,7-dimethyldibenzofuran-2,6-dicarboxylate) (2). The structure of (2) was confirmed by total synthesis, achieved through a biomimetic-type approach using palladium(II) acetate in the key cyclization step. Partial synthesis of the corresponding dimethyl ester (8) was effected starting from natural pannaric acid 6-methyl ester (6). 
ER  -

