title: Diterpene glycosides from Stevia rebaudiana.
abstract: 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, 13-[(2-O-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]-16β-hydroxy-ent-kauran-19-oic acid and 13-methyl-16-oxo-17-nor-ent-kauran-19-oic acid-β-D-glucopyranosyl ester on the basis of extensive 2D NMR and MS spectroscopic data as well as chemical studies.
authors.affiliation: The Coca-Cola Company, Organic Chemistry Department, Research and Technology, One Coca-Cola Plaza, Atlanta, GA 30313, USA. vchaturvedula@na.ko.com
authors.forename: Venkata Sai Prakash
authors.initials: VS
authors.lastname: Chaturvedula
authors.forename: Mani
authors.initials: M
authors.lastname: Upreti
authors.forename: Indra
authors.initials: I
authors.lastname: Prakash
mesh_terms: D004224:Diterpenes / Q000737:chemistry*; D045786:Diterpenes, Kaurane / Q000737:chemistry; D005960:Glucosides / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D036625:Stevia / Q000737:chemistry*
chemical_list: D004224:Diterpenes; D045786:Diterpenes, Kaurane; D005960:Glucosides; D006027:Glycosides; D010936:Plant Extracts; C012043:stevioside; C056177:rubusoside