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morachalcone a/mûrier
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11 résultats
Prenylated arylbenzofuran derivatives from Morus mesozygia with antioxidant activity.
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Five prenylated arylbenzofurans, moracins Q-U, were isolated from Morus mesozygia (Moraceae). Their structures were elucidated on the basis of spectroscopic evidence. Along with these compounds, 3beta-acetoxyurs-12-en-11-one, marsformoxide, moracin C, moracin M, moracin K, artocarpesin,
Phosphodiesterase I-inhibiting Diels-Alder adducts from the leaves of Morus mesozygia.
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A new 2-arylbenzofuran derivative, (+)-dimethylsmoracin O (1), and three new Diels-Alder type adducts, mesozygins A–C (2–4), in addition to eight known compounds, artonin I (5), chalcomaracin (6), norartocarpetin (7), moracin L (8), mulberrofuran F (9), moracin M (10), moracin C (11), and
[Flavonoids from the leaves of Morus alba L].
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The investigation on the leaves of Morus alba L. was carried out to find the relationship of the constituents and the pharmacological activities. The isolation and purification were performed by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography and so on.
Pancreatic lipase inhibitory constituents from Morus alba leaves and optimization for extraction conditions.
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The leaves of Morus alba (Moraceae) have been traditionally used for the treatment of metabolic diseases including diabetes and hyperlipidemia. Thus, inhibitory effect of M. alba leaves on pancreatic lipase and their active constituents were investigated in this study. Twenty phenolic compounds
[Isoprenylated phenolic compounds from leaves of Morus yunnanensis].
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Phytochemical investigation on an EtOH extract of the leaves of Mons yunnanensis led to the isolation and characterization of 11 isoprenylated phenolic compounds, morusyunnansin G (1), morachalcone B (2), cudraxanthone M (3), cudraxanthone D (4), sanggenofuran B(5), moracin D (6), moracin C (7),
Phenolic constituents from the wood of Morus australis with cytotoxic activity.
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A new methylated flavonol, 5,7,2',4'-tetrahydroxy-3-methoxyflavone (1), had been isolated from the methanol extract of the wood of Morus australis, along with nine known compounds, kuwanon C (2), morusin (3), morachalcone A (4), oxyresveratrol (5), 4'-(2-methyl-2-buten-4-yl)oxyresveratrol (6),
Characterization of a New Flavone and Tyrosinase Inhibition Constituents from the Twigs of Morus alba L.
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The twigs of Morus alba L. were found to show strong tyrosinase inhibition activity, and the responsible active components in the extract were further investigated in this study. A flavone, named morusone (1), and sixteen known compounds 2-17 were isolated from M. alba twigs and their structures
Tyrosinase inhibitory constituents from the roots of Morus nigra: a structure-activity relationship study.
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The phytochemical profiles of Morus nigra roots and twigs were compared by HPLC with those of the old and young twigs of Morus alba which are known to contain oxyresveratrol and mulberroside A as major components. It was found that M. nigra root extract contains some unknown natural products with
[Phenolic constituents from stem bark of Morus wittiorum and their anti-inflammation and cytotoxicity].
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To search for the chemical constituents possessing anti-inflammatory or cytotoxic activities from plants, Morus wittiorum was investigated for the first time. The stem bark of M. wittiorum was extracted with 95% EtOH. The EtOH extract was fractionationed on silica gel by eluting with petroleum
Neuroprotective effect of prenylated arylbenzofuran and flavonoids from morus alba fruits on glutamate-induced oxidative injury in HT22 hippocampal cells.
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A prenylated arylbenzofuran and six flavonoids were isolated from the fruits of Morus alba L. through silica gel, octadecyl silica gel, and Diaion HP-20 column chromatography. Based on the nuclear magnetic resonance, mass spectrometry, and infrared spectroscopic data, the chemical structures of the
[Study of anti-oxidant phenolic compounds from stem barks of Morus yunanensis].
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OBJECTIVE
To study anti-oxidant phenolic compounds from stem barks of Morus yunanensis.
METHODS
Isolation and purification were carried out by silica gel, Sephadex LH -20 and RP - 18 column chromatography. The chemical structures of constituents were elucidated on the basis of physicochemical
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