
TY  - JOUR
A1  - Banks, HJ 
A1  - Cameron, DW 
A1  - Raverty, WD 
T1  - Chemistry of the Coccoidea. II. Condensed polycyclic pigments from two Australian pseudococcids (Hemiptera)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1976
VL  - 29
IS  - 7
SP  - 1509
EP  - 1521
KW  - 
UR  - https://doi.org/10.1071/CH9761509 
N2  - The mealy bugs Nipaecoccus aurilanatus (Maskell) and Pseudococcus albizziae (Maskell) have been found to contain the novel hypericin monocarboxylic acid (8). N. aurilanatus also contains hypericin(7) and the anthraquinones (1), (2), (3) and (4) while P. albizziae contains the protohypericins (13) and (14), skyrin (6) and the anthraquinones (1), (2) and (3). A reinvestigation of the oxidation ofemodin bianthrone (17) has provided useful syntheses of skyrin (6) and protohypericin (13), and provided an unambiguous synthesis of the hypericin monocarboxylic acid (8). The substance 'isohypericin' (21) could not be obtained by the literature procedure, reaction affording protohypericin (13) as the only isolable product. 
ER  -

