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Isolation of Candirone: a Novel Pentaoxygenation Pattern in a Naturally Occurring 2-Phenyl-4h-1-benzopyran-4-one from Tephrosia Candida by Virinder S. Parmar; Rajni Jain; Ole Simonsen; Per M. Boll is a Chemistry article available to read on EtoBox.

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Two flavones having very similar physical behaviour and spectral data have been isolated as minor constituents from the seeds of Tephrosia candida. Based upon a detailed and critical study of their mass spectra, extent of shifts in their UV spectra, X-ray diffraction studies, and preparation of their derivatives, the structures of these compounds have been established; one was found to be penduletin (1) and the other 5-hydroxy-2-(4-hydroxyphenyl)-3,6,8-trimethoxy-4H-1-benzopyran-4-one (z), for which the name candirone is proposed. To the best of our knowledge the latter is a new compound and this type of oxygenaton pattern is not known earlier among natural flavones.

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Author

Virinder S. Parmar; Rajni Jain; Ole Simonsen; Per M. Boll

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0040-4020)

Published

1987

Language

EN

Field

Chemistry (Physical Sciences)