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rubrofusarin/senna
Il collegamento viene salvato negli appunti
Pagina 1 a partire dal 21 risultati
Rubrofusarin as a Dual Protein Tyrosine Phosphate 1B and Human Monoamine Oxidase-A Inhibitor: An in Vitro and in Silico Study.
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A number of nature-derived biologically active compounds comprise glycosides. In some cases, the glycosidic residue is needed for bioactivity; however, in other cases, glycosylation just improves some pharmacokinetic/dynamic parameters. The patterns of protein tyrosine phosphatase 1B (PTP1B) and
[Determination of rubrofusarin gentiobioside in Cassia obtusifolia by HPLC].
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OBJECTIVE
To establish a method for determining the content of rubrofusarin gentiobioside in Cassia obtusifolia.
METHODS
The HPLC with Diamonsil C18 (4.6 mm x 250 mm, 5 microm) column was used, acetonitrile-THF-1% acetic acid (18: 3:79) was used as a mobile phase, with flow rate of 1 mL x min(-1),
Alaternin, cassiaside and rubrofusarin gentiobioside, radical scavenging principles from the seeds of Cassia tora on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical.
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Radical scavenging principles on 1,1-diphenyl-2-picrylhydrazyl(DPPH) radical were isolated from the seeds of Cassia tora L. Assignments of the 1H- and 13C-NMR data showed the active components to be an anthraquinone, alaternin and two naphthopyrone glycosides,
[Studies on the constituents of the seeds of Cassia obtusifolia Linne. N. The structure of new glucoside, cassiaside (nor-rubrofusarin-6-beta-D-glucoside].
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Chemical studies on the oriental plant drugs. XXI. The constituents of Cassia tora L. 2. A glycoside of rubrofusarin.
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[Glycosides of roasted seeds of Cassia obtusifolia].
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OBJECTIVE
To study the chemical constituents of the roasted seeds of Cassia obtusifolia, and to illuminate the change of its effective components before and after being roasted.
METHODS
The compounds were isolated and repeatedly purified by macroporous resin, silica gel column chromatography. Their
A new naphthopyrone derivative from Cassia quinquangulata and structural revision of quinquangulin and its glycosides.
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A novel naphthopyrone derivative, named quinquangulone (1), has been isolated from Cassia quinquangulata, along with the known compounds quinquangulin (2) and its two glycosides (3 and 4), rubrofusarin (5) and its two glycosides (6 and 7), nor-rubrofusarin (8) and its 6-O-glucoside (9), and three
Peroxynitrite scavenging mode of alaternin isolated from Cassia tora.
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Peroxynitrite (ONOO-), formed from the reaction of superoxide (.O2-) and nitric oxide (NO), is a potent oxidant that contributes to the oxidation of various cellular constituents, including lipids, amino acids, sulfhydryls and nucleotides. It can cause cellular injury, such as DNA fragmentation and
New antihepatotoxic naphtho-pyrone glycosides from the seeds of Cassia tora.
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Two new naphtho-pyrone glycosides, 9-[(beta-D-glucopyranosyl-(1----6)-O-beta-D-glucopyranosyl)oxy]-10- hydroxy-7-methoxy-3-methyl-1H-naphtho[2,3-c]pyran-1 -one (5) and 6-[(alpha-apiofuranosyl-(1----6)-O-beta-D-glucopyranosyl)oxy]- rubrofusarin (6), together with cassiaside (3) and
GC-MS and LC-MS Identification of the Phenolic Compounds Present in the ethyl Acetate Fraction Obtained from Senna tora, L. Roxb. seeds.
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The aim of this work is to characterize the active constituents present in the ethyl acetate fraction of Senna tora, L. Roxb. seeds. Due to the fact that the main biological activity of S. tora, L seeds is attributed to its phenolic compounds which are mainly isolated from Ethyl acetate fraction, to
Naphthopyrone glucosides from the seeds of Cassia tora with inhibitory activity on advanced glycation end products (AGEs) formation.
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Three naphthopyrone glucosides, cassiaside (1), rubrofusarin-6-O-beta-D-gentiobioside (2), and toralactone-9-O-beta-D-gentiobioside (3), were isolated from the BuOH-soluble extract of the seeds of Cassia tora as active constituents, using an in vitro bioassay based on the inhibition of advanced
Antimycobacterial Naphthopyrones from Senna obliqua.
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Bioactivity-directed fractionation of the methanolic extract of the stem and fruits of Senna obliqua led to the isolation of two known antimycobacterial natural products, quinquangulin (1) and rubrofusarin (2). Both compounds had minimum inhibitory concentrations (MICs) of 12.0 microg/mL against
Estrogenic and anti-estrogenic activities of Cassia tora phenolic constituents.
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Through an estrogenic activity bioassay-guided fractionation of the 70% ethanolic extract of Cassia tora seeds two new phenolic triglucosides, torachrysone 8-O-[beta-D-glucopyranosyl(1-->3)-O-beta-D-glucopyranosyl(1-->6)-O-beta-D-glucopyranoside] (1) and toralactone
Phenolic constituents of Cassia seeds and antibacterial effect of some naphthalenes and anthraquinones on methicillin-resistant Staphylococcus aureus.
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Thirteen phenolic glycosides including six new compounds were isolated from seeds of Cassia tora (Leguminosae). The structures of the new compounds, rubrofusarin triglucoside (7), nor-rubrofusarin gentiobioside (9), demethylflavasperone gentiobioside (10), torachrysone gentiobioside (11),
Structure elucidation of a sodium salified anthraquinone from the seeds of Cassia obtusifolia by NMR technique assisted with acid-alkali titration.
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A new sodium salt of anthraquinone named sodium emodin-1-O-β-gentiobioside, together with nine known compounds, viz. rubrofusarin-6-O-β-D-gentiobioside, chrysophanol-1-O-β-D-glucopyranosyl-(1-3)-β-D-glucopyranosyl-(1-6)-β-D-glucopyranoside, obtusifolin-2-O-β-D-glucopyranoside,
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