Isolation and Structure Elucidation of a New Diterpene Glycoside from Stevia rebaudiana Bertoni

Venkata Sai Prakash Chaturvedula, Srinivasa Rao Meneni

Abstract


A new minor diterpene glycoside has been isolated from a commercial extract of the leaves of Stevia rebaudiana and its structure was identified as 13-[(2-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy] ent-kaur-16-en-19-oic acid-[2-O-(2-O-β-D-glucopyranosyl)-β-D-glucopyranosyl-3-O-b-D-glucopyranosyl-β-D-glucopyranosyl] ester (1) based on extensive NMR (1D and 2D) and mass spectroscopic data, and hydrolysis studies.


Keywords


Stevia rebaudiana, Compositae, Asteraceae, Diterpene glycosides, Structural characterization, Spectral data, Acid and Enzymatic hydrolysis

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DOI: https://doi.org/10.5539/jfr.v7n1p70

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Journal of Food Research   ISSN 1927-0887 (Print)   ISSN 1927-0895 (Online)  E-mail: jfr@ccsenet.org

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