Molecules p. 3552 - 3562 (2011)
Update date:2022-08-29
Topics:
Chaturvedula, Venkata Sai Prakash
Upreti, Mani
Prakash, Indra
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-Dglucopyranosyl) 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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Doi:10.1021/acs.joc.9b00470
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