
TY  - JOUR
A1  - Berry, RC 
A1  - Eade, RA 
A1  - Simes, JJH 
T1  - Extractives of Australian timbers. XVII. The isolation, structure and synthesis of koparin (7,2',3'-Trihydroxy-4'-methoxyisoflavone)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1977
VL  - 30
IS  - 8
SP  - 1827
EP  - 1835
KW  - 
UR  - https://doi.org/10.1071/CH9771827 
N2  - The isolation of koparin, a minor constituent of the wood of Castanospermum australe, is described. By a combination of chemical and spectroscopic methods koparin was shown to be either 7,3?,4?-tri- hydroxy-2?-methoxyisoflavone (5) or 7,2?,3?-trihydroxy-4?- methoxyisoflavone (6). The latter compound has been synthesized by demethylenation of 7-hydroxy-4?-methoxy-2?,3?-methylenedioxyiso- flavone (9) and is identical with koparin. 
ER  -

