The structure of robustic acid, a new 4-hydroxy-3-phenylcoumarin

1 January 1966

journal article
research article
Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic

p. 606-612
https://doi.org/10.1039/j39660000606

Abstract

Robustic acid, derived from the roots of Derris robusta, is a 4-hydroxy-3-phenylcoumarin closely related to scandenin and Ionchocarpic acid. Methyl robustate, a 4-methoxy-3-phenylcoumarin, has also been isolated. α- and β-Isodihydrorobustic acid have been synthesised by unambiguous methods. The demethylation of dihydrorobustic acid has been investigated and two rearrangement products have been characterised.

Keywords

STRUCTURE
HYDROXY
PHENYLCOUMARIN
METHYL ROBUSTATE
ISODIHYDROROBUSTIC ACID
Β ISODIHYDROROBUSTIC
METHODS.THE DEMETHYLATION
DERRIS ROBUSTA