Stevia impurity (13-[(2-O-6-deoxy-beta-D-glucopyranosyl-3-O-beta-D-glucopyranosyl-beta-D-glucopyranosyl)oxy]ent-kaur-16-en-19-oic acid beta-D-glucopyranosyl ester)

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Structures of the novel diterpene glycosides from Stevia rebaudiana.[Reference: WebLink]

METHODS AND RESULTS:
From the commercial extract of the leaves of Stevia rebaudiana, two new diterpenoid glycosides were isolated besides the known steviol glycosides including stevioside, rebaudiosides A-F, rubusoside, and dulcoside A.
CONCLUSIONS:
The structures of the two new compounds were identified as 13-[(2-O-6-deoxy-β-d-glucopyranosyl-β-d-glucopyranosyl)oxy] ent-kaur-16-en-19-oic acid β-d-glucopyranosyl ester (1), and Stevia impurity (13-[(2-O-6-deoxy-β-D-glucopyranosyl-3-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy]ent-kaur-16-en-19-oic acid β-D-glucopyranosyl ester) (2), on the basis of extensive NMR and MS spectral data as well as chemical studies.

Product Name	Stevia impurity (13-[(2-O-6-deoxy-beta-D-glucopyranosyl-3-O-beta-D-glucopyranosyl-beta-D-glucopyranosyl)oxy]ent-kaur-16-en-19-oic acid beta-D-glucopyranosyl ester)
CAS No.:	1309929-72-3
Catalog No.:	CFN95229
Molecular Formula:	C₄₄H₇₀O₂₂
Molecular Weight:	951.0 g/mol
Purity:	>=98%
Type of Compound:	Diterpenoids
Physical Desc.:	Powder
Source:	The leaves of Stevia rebaudiana Bertoni.
Solvent:	DMSO, Pyridine, Methanol, Ethanol, etc.
Price:	$463/5mg