CHEMICAL EXAMINATION OF A PHYTOSTEROLIN FROM THE SEEDS OF IPOMOEA FISTULOSA

O. C. Dass Gupta; S. A. I. Rizvi; P. C. Gupta

doi:10.1055/s-0028-1099686

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Planta Med 1971; 20(4): 172-177
DOI: 10.1055/s-0028-1099686

CHEMICAL EXAMINATION OF A PHYTOSTEROLIN FROM THE SEEDS OF IPOMOEA FISTULOSA

O. C. Dass Gupta, S. A. I. Rizvi, P. C. Gupta

Chemical Laboratories, University of Allahabad, Allahabad, India

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Publication Date:
15 January 2009 (online)

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Abstract

The seeds of Ipomoea fistulosa (I. carnea) have been found to contain a phytosterolin, C₃₅H₆₀O₆, m. p. 284–286°. Acid hydrolysis of the compound yielded glucose and β–sitosterol, the identity of which was confirmed by mixed melting point determination and superimposition of infra–red spectra over an authentic sample. Methylation, periodate oxidation, enzymic hydrolysis and the positive optical rotations of the compound and its methyl and acetyl derivatives have shown the phytosterolin to be O–α–D–glucopyranoside of β–sitosterol.