
TY  - JOUR
A1  - Elix, JA 
A1  - Gaul, KL 
A1  - Jiang, H 
T1  - The Structure and Synthesis of Some Minor Xanthones From the Lichen <I>Rinodina thiomela</I>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1993
VL  - 46
IS  - 1
SP  - 95
EP  - 110
KW  - 
UR  - https://doi.org/10.1071/CH9930095 
N2  - The total synthesis of the xanthones 5,7-dichloro-8-hydroxy-2-methoxy-1,3-dimethyl-9H-xanthen-9-one(10),5,7-dichloro-2,8-dihydroxy-1,3-dimethyl-9H-xanthen-9-one(11),2-dechloro-8-O-methylthiomelin (6), 2-dechlorothiomelin (8), 4-dechloro-8-O-methylthiomelin (7), 4-dechlorothiomelin (5) and northiomelin (9) has been achieved. The compounds (5)-(7) and (10) were shown to be identical to the corresponding xanthones isolated from the lichen Rinodina thiomela, while chromatographic comparisons confirmed that the biosynthetically related xanthones (8), (9) and (11) were minor constituents of this species. This is the first reported natural occurrence of the xanthones (8) and (11). 
ER  -

