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Abstract
From the stem of Derris ovalifolia, a new chromanone alkaloid characterised as 7-methoxy-3-[1-(3-pyridyl)methylidene]-4-chromanone (1) was isolated along with four known compounds, dehydrotoxicarol (2), dehydrodeguelin (3), toxicarol isoflavone (4) and indole-3-carbaldehyde (5). Their structures were determined on the basis of spectral data interpretation. The structure of compound 1 has also been confirmed by synthesis.
Acknowledgements
The authors are grateful to Dr N. Parthasarathy, Reader, Department of Ecology and Environmental Sciences, Pondicherry University, Pondicherry, for the identification and collection of plant material, the Department of Science and Technology, New Delhi, for the purchase of a high-resolution NMR spectrometer under the IRHPA programme, and SAIF-CDRI, Lucknow, for FAB-MS and elemental analysis.