Ebenaceae extractives. Part IV. Diosindigo A, a blue pigment from several Diospyros species
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- p. 1128-1131
- https://doi.org/10.1039/p19740001128
Abstract
The wood of seven of the eighteen species of Diospyros examined contains small amounts of a blue pigment, diosindigo A [8,8′-dihydroxy-4,4′-dimethoxy-6,6′-dimethyl-2,2′-binaphthylidene-1,1′-quinone(I; R1= Me, R2= OH)]. Other extractives include plumbagin, 7-methyljuglone, isodiospyrin, mamegakinone, bergenin, lupeol, betulin, betulinic acid, oleanolic acid, β-sitosterol, and stigmasterol. Diosindigo A has been synthesised by the oxidation of 4-methoxy-6-methylnaphthalene-1,8-diol, prepared from 7-methyljuglone.Keywords
This publication has 0 references indexed in Scilit: