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Iridoid Glucoside (iridoid + glucoside)

Distribution by Scientific Domains
Chemistry83%

Selected Abstracts

New Iridoid Glucoside from Picrorhiza kurroa Royle ex Benth.

CHEMINFORM, Issue 36 2004
Suparna Mandal
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

Iridoid Glucosides from Eremostachys moluccelloidesBunge

HELVETICA CHIMICA ACTA, Issue 8 2007
hsan Çal
Abstract From the aerial parts of Eremostachys moluccelloidesBunge, a new iridoid glucoside, lamalbidic acid (7), was isolated as its choline salt 7a together with six known iridoid glucosides, 5-deoxysesamoside (1), 6, -hydroxy-7-epiloganin (2), lamalbide (3), shanzhiside methyl ester (4), sesamoside (5), and 5-deoxypulchelloside I (6). The structures of 7a and 7 (obtained from 7a) were elucidated by spectroscopic (UV, IR, 1D- and 2D-NMR, and ESI-MS) methods. [source]

Secoiridoid glucosides with free radical scavenging activity from the leaves of Syringa dilatata

PHYTOTHERAPY RESEARCH, Issue 4 2003
Hyuncheol Oh
Abstract Activity-guided fractionation of the EtOAc and MeOH extract of the leaves of Syringa dilatata NAKAI furnished one free radical scavenger, the secoiridoid glucoside oleuropein together with ligstroside and an iridoid glucoside, syringopicroside. Oleuropein interacted with the stable free radical, 1,1-diphenyl-2-picrylhydrazyl (DPPH), and showed an IC50 value of 40.4 µM. L-Ascorbic acid as a positive control showed an IC50 value of 50.3 µM. Copyright © 2003 John Wiley & Sons, Ltd. [source]

Phenylethyl Glycosides from Globularia alypum Growing in Turkey

HELVETICA CHIMICA ACTA, Issue 8 2008
Hasan K, bekmez
Abstract From the leaves of Globularia alypum, three new phenylethyl glycosides, namely galypumosides A (=2-(3,4-dihydroxyphenyl)ethyl O - , -rhamnopyranosyl-(1,3)-4- O -[(E)-caffeoyl]-6- O -[(E)- p -coumaroyl]- , -glucopyranoside; 1), B (=2-(3,4-dihydroxyphenyl)ethyl O - , -rhamnopyranosyl-(1,3)-4- O -[(E)-caffeoyl]-6- O -[(E)-feruloyl]- , -glucopyranoside; 2), and C (=2-(3,4-dihydroxyphenyl)ethyl O - , -rhamnopyranosyl-(1,3)-4- O -[(E)-caffeoyl]-6- O -menthiafoloyl- , -glucopyranoside; 3), were isolated, together with two known phenylethyl glycosides, calceolarioside A and verbascoside. Eight iridoid glucosides, catalpol, globularicisin, globularin, globularidin, globularinin, globularimin, lytanthosalin, and alpinoside, a flavon glycoside, 6-hydroxyluteolin 7- O -sophoroside, a lignan glycoside, syringaresinol 4,- O - , -glucopyranoside, and a phenylpropanoid glycoside, syringin, were also obtained and characterized. The structures of the isolates were elucidated on the basis of 1D- and 2D-NMR experiments as well as HR-MALDI-MS. [source]

Iridoid Glucosides from Eremostachys moluccelloidesBunge

HELVETICA CHIMICA ACTA, Issue 8 2007
hsan Çal
Abstract From the aerial parts of Eremostachys moluccelloidesBunge, a new iridoid glucoside, lamalbidic acid (7), was isolated as its choline salt 7a together with six known iridoid glucosides, 5-deoxysesamoside (1), 6, -hydroxy-7-epiloganin (2), lamalbide (3), shanzhiside methyl ester (4), sesamoside (5), and 5-deoxypulchelloside I (6). The structures of 7a and 7 (obtained from 7a) were elucidated by spectroscopic (UV, IR, 1D- and 2D-NMR, and ESI-MS) methods. [source]