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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Chemistry of the Coccoidea. IV. Polyhydroxyanthraquinones and their glucosides from Eriococcus coriaceus (Hemiptera: Insecta)

HJ Banks, DW Cameron and MJ Crossley

Australian Journal of Chemistry 29(10) 2231 - 2245
Published: 1976

Abstract

A group of seven polyhydroxyanthraquinones based on emodin and the new 2-acetylemodin has been isolated from the eriococcid Eriococcus coriaceus Maskell. Their structures have been established by chemical interconversion, spectroscopic analysis and comparison with known substances. They occur in the living insects as O-glucosides, four of which were isolated pure. Glucosylation has been shown to involve the oxygen substituent at position 8 by a convenient p.m.r. spectroscopic procedure developed for the purpose. Aqueous extracts of E. coriaceus show glucosidase activity towards aryl substrates.

https://doi.org/10.1071/CH9762231

© CSIRO 1976

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