Madagascarin, a New Pigment From the Leaves of Harungana madagascariensis
- 1 January 1972
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Chemistry
- Vol. 25 (4) , 843-855
- https://doi.org/10.1071/ch9720843
Abstract
Extraction of the leaves of Harungana madagascariensis Poir. (Guttiferae) gave β-sitosterol, quercetin, diisopropyl 4,4'-methylenedicarbanilate (probably an artefact), and a new pigment, madagascarin. Mainly by spectroscopic methods the structure of the latter was established as 2,7'-biemodyl (1,3,8,l?,6',8'-hexahydroxy- 6,3'-dimethyl-2,Z'-bianthraquinone).Keywords
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