
TY  - JOUR
A1  - Cooke, RG 
A1  - Dagley, IJ 
T1  - Colouring Matters of Australian Plants. XXI. Naphthoxanthenones in the Haemodoraceae
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1979
VL  - 32
IS  - 8
SP  - 1841
EP  - 1847
KW  - 
UR  - https://doi.org/10.1071/CH9791841 
N2  - Two new pigments, haemofluorone A and haemofluorone B, have been isolated from the flowers of Macropidia fuliginosa Drum. and also from the root system of Phlebocarya ciliata R.Br. Spectroscopic analysis indicates the structures 5,8,9- and 8,9,11-trihydroxy-lH-naphtho[2,1,8-mna]xanthen-l-one. The former structure has been confirmed by a synthesis of the trimethyl ether by photochemical oxidative cyclization of 9-(3,4-dimethoxyphenyl)-6-hydroxy-2-methoxy-1H-phenalen-1-one.The parent chromophore, 1H-naphtho[2,1,8-mnalxanthen-1-one, and the 2,5-dimethoxy derivative have also been prepared by analogous photochemical reactions of the appropriate arylphenalenones. 
ER  -

