Structures of the novel diterpene glycosides from Stevia rebaudiana

被引:44
作者
Chaturvedula, Venkata Sai Prakash [1 ]
Prakash, Indra [1 ]
机构
[1] Coca Cola Co, Dept Organ Chem, Res & Technol, Atlanta, GA 30313 USA
关键词
Stevia rebaudiana; Compositae; Asteraceae; Diterpenoid glycosides; NMR; MS; C-13; NMR-SPECTROSCOPY; OLEANANE SAPONINS; GLUCOSIDES; CHEMISTRY; LEAVES;
D O I
10.1016/j.carres.2011.03.025
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
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. The structures of the two new compounds were identified as 13-[(2-O-6-deoxy-beta-D-glucopyranosyl-beta-D-glucopyranosyl)oxy] ent-kaur-16-en-19-oic acid beta-D-glucopyranosyl ester (1), and 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-O-glucopyranosyl ester (2), on the basis of extensive NMR and MS spectral data as well as chemical studies. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1057 / 1060
页数:4
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