
TY  - JOUR
A1  - Chan, AWK 
A1  - Crow, WD 
T1  - Chemical constituents of <I>Eriococcus confusus</I> Maskell. I. The quinonoid pigments
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1966
VL  - 19
IS  - 9
SP  - 1701
EP  - 1708
KW  - 
UR  - https://doi.org/10.1071/CH9661701 
N2  - Eriococcus confusus Maskell., growing on both Eucalyptus caesia and maculosa, contains a number of anthraquinone pigments. Emodin has been identified as one of the major components, and the other is tentatively assigned the structure 1,2,3,8-tetrahydroxy-6-methylanthrquinone. Chromatographic and p.m.r, data are presented for a number of anthraquinones, including the new compounds 1,3,5-trihydroxy-6- methylanthraquinone and 1,3,5-trihydroxy-7-methylanthraquinone.   In addition to the pigments, the insects are covered with a waxy secretion, which probably consists of a mixture of long-chain, saturated ketones in the C20-C24 range. 
ER  -

