
TY  - JOUR
A1  - Cameron, Donald W. 
A1  - Gan, Chee-Yong 
A1  - Griffiths, Peter G. 
A1  - Pattermann, Judy A. 
T1  - Synthesis of Highly Oxygenated Anthraquinones from <emph type="2">Chamaecrista greggii</emph>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1998
VL  - 51
IS  - 5
SP  - 421
EP  - 432
KW  - 
UR  - https://doi.org/10.1071/C97211 
N2  - Four isomeric anthraquinones (2)&#8211;(5) have been synthesized for the first time, by cycloaddition involving the new dienes (8) and (9). Their spectroscopic properties have been compared together and with data for two natural anthraquinones reported from Chamaecrista greggii. The assigned structure (2) was thereby supported for one of the natural isomers. The other isomer, previously formulated as (3), did not correspond to any of the synthesized compounds &#91;(2)&#8211;(5)&#93;. 
ER  -

