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Acylated flavonol glycosides from leaves of Stenochlaena palustris.
J Nat Prod. 1999 Jan; 62(1):70-5.JN

Abstract

From the leaves of Stenochlaena palustris five new O-acylated flavonol glycosides, stenopalustrosides A-E (1-5), have been isolated along with five known compounds, kaempferol 3-O-(3' '-O-E-p-coumaroyl)-(6' '-O-E-feruloyl)-beta-D-glucopyranoside (6), kaempferol 3-O-(3' ',6' '-di-O-E-p-coumaroyl)-beta-D-glucopyranoside (7), kaempferol 3-O-(3' '-O-E-p-coumaroyl)-beta-D-glucopyranoside (8), kaempferol 3-O-(6' '-O-E-p-coumaroyl)-beta-D-glucopyranoside (9); and kaempferol 3-O-beta-D-glucopyranoside (10). The structures of the isolates were elucidated by spectroscopic methods, mainly 1D and 2D NMR. Compounds 1-4 showed significant antibacterial activities against Gram-positive strains. The structural difference between the isolated antibacterial and nonantibacterial compounds is discussed.

Authors+Show Affiliations

Liu H
Department of Pharmacy, Swiss Federal Institute of Technology (ETH) Zurich, CH-8057 Zürich, Switzerland.
Orjala J
No affiliation info available
Sticher O
No affiliation info available
Rali T
No affiliation info available

MeSH

AcylationAnti-Infective AgentsCarbohydrate ConformationFlavonoidsFlavonolsGlycosidesMagnetic Resonance SpectroscopyMicrobial Sensitivity TestsPlant LeavesSpectrometry, Mass, Fast Atom Bombardment

Pub Type(s)

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

Language

eng

PubMed ID

9917285

Citation

Liu, H, et al. "Acylated Flavonol Glycosides From Leaves of Stenochlaena Palustris." Journal of Natural Products, vol. 62, no. 1, 1999, pp. 70-5.
Liu H, Orjala J, Sticher O, et al. Acylated flavonol glycosides from leaves of Stenochlaena palustris. J Nat Prod. 1999;62(1):70-5.
Liu, H., Orjala, J., Sticher, O., & Rali, T. (1999). Acylated flavonol glycosides from leaves of Stenochlaena palustris. Journal of Natural Products, 62(1), 70-5.
Liu H, et al. Acylated Flavonol Glycosides From Leaves of Stenochlaena Palustris. J Nat Prod. 1999;62(1):70-5. PubMed PMID: 9917285.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Acylated flavonol glycosides from leaves of Stenochlaena palustris. AU - Liu,H, AU - Orjala,J, AU - Sticher,O, AU - Rali,T, PY - 1999/1/23/pubmed PY - 1999/1/23/medline PY - 1999/1/23/entrez SP - 70 EP - 5 JF - Journal of natural products JO - J Nat Prod VL - 62 IS - 1 N2 - From the leaves of Stenochlaena palustris five new O-acylated flavonol glycosides, stenopalustrosides A-E (1-5), have been isolated along with five known compounds, kaempferol 3-O-(3' '-O-E-p-coumaroyl)-(6' '-O-E-feruloyl)-beta-D-glucopyranoside (6), kaempferol 3-O-(3' ',6' '-di-O-E-p-coumaroyl)-beta-D-glucopyranoside (7), kaempferol 3-O-(3' '-O-E-p-coumaroyl)-beta-D-glucopyranoside (8), kaempferol 3-O-(6' '-O-E-p-coumaroyl)-beta-D-glucopyranoside (9); and kaempferol 3-O-beta-D-glucopyranoside (10). The structures of the isolates were elucidated by spectroscopic methods, mainly 1D and 2D NMR. Compounds 1-4 showed significant antibacterial activities against Gram-positive strains. The structural difference between the isolated antibacterial and nonantibacterial compounds is discussed. SN - 0163-3864 UR - https://www.unboundmedicine.com/medline/citation/9917285/Acylated_flavonol_glycosides_from_leaves_of_Stenochlaena_palustris_ L2 - https://doi.org/10.1021/np980179f DB - PRIME DP - Unbound Medicine ER -