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Furostanol saponins and quercetin glycosides from the leaves of Helleborus viridis L.
Phytochemistry. 2004 Nov; 65(21):2921-8.P

Abstract

Phytochemical analysis of the polar extracts of the leaves of Helleborus viridis (Ranunculaceae) resulted in the isolation of two new furostanol saponins (25R)-26-[(alpha-L-rhamnopyranosyl)oxy]-22alpha-methoxyfurost-5-en-3beta-yl O-beta-D-glucopyranosyl-(1-->3)-O-[6-acetyl-beta-D-glucopyranosyl-(1-->3)]-O-beta-D-glucopyranoside (1) and (25R)-26-[(alpha-L-rhamnopyranosyl)oxy]-22alpha-methoxyfurost-5-en-3beta-yl O-beta-D-glucopyranosyl-(1-->3)-O-beta-D-glucopyranosyl-(1-->3)-O-beta-D-glucopyranoside (2) and three new quercetin glycosides, quercetin 3-O-(2-E-caffeoyl)-alpha-L-arabinopyranosyl-(1-->2)-beta-D-galactopyranoside-7-O-beta-d-glucopyranoside (3), quercetin 3-O-(2-E-caffeoyl)-alpha-L-arabinopyranosyl-(1-->2)-beta-D-galactopyranoside (4), and quercetin 3-O-alpha-L-arabinopyranosyl-(1-->2)-beta-D-galactopyranoside (5). The structures of the new compounds were determined by spectroscopic analysis, including 2D NMR data and mass spectrometry.

Authors+Show Affiliations

Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15501262

Citation

Braca, Alessandra, et al. "Furostanol Saponins and Quercetin Glycosides From the Leaves of Helleborus Viridis L." Phytochemistry, vol. 65, no. 21, 2004, pp. 2921-8.
Braca A, Prieto JM, De Tommasi N, et al. Furostanol saponins and quercetin glycosides from the leaves of Helleborus viridis L. Phytochemistry. 2004;65(21):2921-8.
Braca, A., Prieto, J. M., De Tommasi, N., Tomè, F., & Morelli, I. (2004). Furostanol saponins and quercetin glycosides from the leaves of Helleborus viridis L. Phytochemistry, 65(21), 2921-8.
Braca A, et al. Furostanol Saponins and Quercetin Glycosides From the Leaves of Helleborus Viridis L. Phytochemistry. 2004;65(21):2921-8. PubMed PMID: 15501262.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Furostanol saponins and quercetin glycosides from the leaves of Helleborus viridis L. AU - Braca,Alessandra, AU - Prieto,Josè Maria, AU - De Tommasi,Nunziatina, AU - Tomè,Franca, AU - Morelli,Ivano, PY - 2004/03/23/received PY - 2004/06/09/revised PY - 2004/10/27/pubmed PY - 2005/1/15/medline PY - 2004/10/27/entrez SP - 2921 EP - 8 JF - Phytochemistry JO - Phytochemistry VL - 65 IS - 21 N2 - Phytochemical analysis of the polar extracts of the leaves of Helleborus viridis (Ranunculaceae) resulted in the isolation of two new furostanol saponins (25R)-26-[(alpha-L-rhamnopyranosyl)oxy]-22alpha-methoxyfurost-5-en-3beta-yl O-beta-D-glucopyranosyl-(1-->3)-O-[6-acetyl-beta-D-glucopyranosyl-(1-->3)]-O-beta-D-glucopyranoside (1) and (25R)-26-[(alpha-L-rhamnopyranosyl)oxy]-22alpha-methoxyfurost-5-en-3beta-yl O-beta-D-glucopyranosyl-(1-->3)-O-beta-D-glucopyranosyl-(1-->3)-O-beta-D-glucopyranoside (2) and three new quercetin glycosides, quercetin 3-O-(2-E-caffeoyl)-alpha-L-arabinopyranosyl-(1-->2)-beta-D-galactopyranoside-7-O-beta-d-glucopyranoside (3), quercetin 3-O-(2-E-caffeoyl)-alpha-L-arabinopyranosyl-(1-->2)-beta-D-galactopyranoside (4), and quercetin 3-O-alpha-L-arabinopyranosyl-(1-->2)-beta-D-galactopyranoside (5). The structures of the new compounds were determined by spectroscopic analysis, including 2D NMR data and mass spectrometry. SN - 0031-9422 UR - https://www.unboundmedicine.com/medline/citation/15501262/Furostanol_saponins_and_quercetin_glycosides_from_the_leaves_of_Helleborus_viridis_L_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0031-9422(04)00351-6 DB - PRIME DP - Unbound Medicine ER -