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New polyacetylene glucosides from the florets of Carthamus tinctorius and their weak anti-inflammatory activities.
Eight new linear polyacetylene glucosides (1-8), containing two C(10)-, one C(13)- and five C(14)-acetylenes, together with three known polyacetylenes (9-11) were isolated from the florets ofExpand
Hepatoprotective activity of twelve novel 7'-hydroxy lignan glucosides from Arctii Fructus.
Twelve novel 7'-hydroxy lignan glucosides, including two benzofuran-type neolignans, two 8-O-4' neolignedans, and six tetrahydrofuranoid lignans were isolated from the fruit of Arctium lappa L. (Asteraceae), commonly known as Arctii Fructus and showed significantly stronger hepatoprotective activity than the positive control bicyclol. Expand
Forsythoneosides A-D, Neuroprotective Phenethanoid and Flavone Glycoside Heterodimers from the Fruits of Forsythia suspensa.
Forsythoneosides A-D (1-4), four unusual adducts of a flavonoid unit fused to a phenylethanoid glycoside through a pyran ring or carbon-carbon bond, and four new phenylethanoid glycosides (5-8) wereExpand
Two new quinochalcones from the florets of Carthamus tinctorius.
Two new quinochalcone compounds were isolated from the florets of Carthamus tinctorius and their unusual structures including their absolute stereochemistry were elucidated based on UV, IR, HRESIMS, 1D and 2D NMR data, and CD spectrum. Expand
An Efficient Method for Determining the Relative Configuration of Furofuran Lignans by 1H NMR Spectroscopy.
An efficient 1H NMR spectroscopic approach for determining the relative configurations of lignans with a 7,9':7',9-diepoxy moiety has been established and the rule should be applied carefully when the C-2 or C-6 substituent of the aromatic rings may alter the dominant conformers of the furofuran moiety. Expand
Acyl glycosides lignans, coumarins, and terpenes from the stems of Erycibe obtusifolia.
Nine new acyl glycosides, obtusifosides A-I (1-9), and eight known compounds have been isolated from an EtOH extract of the stems of Erycibe obtusifolia. Their structures were elucidated on the basisExpand
Hepatoprotective acyl glycosides obtained from Erycibe hainanesis
Abstract An ongoing search for naturally occurring hepatoprotective constituents has identified three new acyl glycosides (1–3) and a new lignan glycoside (4) in the roots and stems of ErycibeExpand
Lignans from the root of Rhodiola crenulata.
Eleven new lignans and a new benzonitrile compound, crenulatanoside A, were isolated from the roots of R. crenULata L. along with 25 known compounds, including 12 lignan glycosides, which were elucidated by spectroscopic data and chemical evidence. Expand
NMR solution structure study of the representative component hydroxysafflor yellow A and other quinochalcone C-glycosides from Carthamus tinctorius.
The results indicate that the structure of HSYA is different than the previously described 1b, with 3-enol-1,7-diketo form, and on the basis of this finding, other published quinochalcone C-glycoside structures were revised. Expand
New Butyrolactone Type Lignans from Arctii Fructus and Their Anti-inflammatory Activities.
All of the compounds were tested for their anti-inflammatory properties in terms of suppressing the production of NO in lipopolysaccharide-induced BV2 cells and exhibited stronger anti- inflammation effects than the positive control curcumin. Expand