Note: New anthraquinones from Gladiolus gandavensis

Abstract

Two new anthraquinones, methyl 8-hydroxy-3-methoxy-6,7-methylenedioxy-1-methylanthraquinone-2-carboxylate (gandavensin A, 1) and methyl 8-hydroxy-3,6,7-trimethoxy-1-methylanthraquinone-2-carboxylate (gandavensin B, 2), have been isolated from the light petroleum extract of the subterranean corm of Gladiolus gandavensis Van Houtt., along with methyl 8-hydroxy-3,6-dimethoxy-1-methylanthraquinone-2-carboxylate (3), methyl trans-p-methoxycinnamate (4), 5,7-dimethoxy-2-methylchromone (5), and 5-hydroxy-2-hydroxymethyl-7-methoxychromone (6). Their structures were elucidated on the basis of spectral data.

Keywords:

• Anthraquinone
• Gandavensin A
• Gandavensin B

Acknowledgements

This work was supported by the DASF (Di'ao Science Foundation). The authors thank Ms H. Hu and Mr W. Qi (Institute of Materia Medica, Chengdu Di'ao Group) for measuring IR and UV spectra.