Diterpene Glycosides from Stevia rebaudiana
Copyright policy )Diterpene Glycosides from Stevia rebaudiana
Three novel diterpene glycosides were isolated for the first time from the commercial extract of the leaves of Stevia rebaudiana, along with several known steviol glycosides, namely stevioside, rebaudiosides A-F, rubusoside and dulcoside A. The new compounds were identified as 13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy] ent-kaur-15-en-19-oic acid (1), 13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16β-hydroxy-ent-kauran-19-oic acid (2) and 13-methyl-16-oxo-17-nor-ent-kauran-19-oic acid-β-D-glucopyranosyl ester (3) on the basis of extensive 2D NMR and MS spectroscopic data as well as chemical studies.
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Compositae, Magnetic Resonance Spectroscopy, Molecular Structure, Plant Extracts, Organic chemistry, Asteraceae, spectral data, Article, Plant Leaves, QD241-441, chemical studies, Glucosides, diterpenoid glycosides, <em>Stevia rebaudiana</em>; Compositae; Asteraceae; diterpenoid glycosides; spectral data; chemical studies, Stevia, Glycosides, Diterpenes, Diterpenes, Kaurane, Stevia rebaudiana
Compositae, Magnetic Resonance Spectroscopy, Molecular Structure, Plant Extracts, Organic chemistry, Asteraceae, spectral data, Article, Plant Leaves, QD241-441, chemical studies, Glucosides, diterpenoid glycosides, <em>Stevia rebaudiana</em>; Compositae; Asteraceae; diterpenoid glycosides; spectral data; chemical studies, Stevia, Glycosides, Diterpenes, Diterpenes, Kaurane, Stevia rebaudiana
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