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Página 1 desde 19 resultados
A new biflavone glucoside from the roots of Stellera chamaejasme.
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The present study investigated the chemical constituents of the roots of Stellera chamaejasme (Thymelaeaceae). One new biflavone glucoside (1), along with other thirteen known compounds (2-14), was isolated by repeated column chromatographic methods and their structures were elucidated on the basis
Cytotoxic biflavones from Stellera chamaejasme.
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Bioassay-guided phytochemical studies on Stellera chamaejasme led to the isolation of two new biflavones, chamaejasmenin E (1) and chamaejasmin D (2), together with ten known compounds. The structures of new compounds were elucidated by extensive spectroscopic analyses and their absolute
A novel cytotoxic C-methylated biflavone from the stem of Cephalotaxus wilsoniana.
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Bioassay-directed fractionation of an ethanolic extract of Cephalotaxus wilsoniana has resulted in the isolation of a novel C-methylated biflavone, taiwanhomoflavone-A (1). Its structure was elucidated on the basis of spectroscopic analysis. Taiwanhomoflavone-A is cytotoxic with ED50 values of 3.4,
Biflavone Ginkgetin, a Novel Wnt Inhibitor, Suppresses the Growth of Medulloblastoma.
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Medulloblastoma (MB) is a form of malignant brain tumor that predominantly arises in infants and children, of which approximately 25 % is due to upregulation of canonical Wnt pathway with mainly mutations in CTNNB1. Therefore, Wnt inhibitors could offer rational therapeutic strategies and
Ginkgetin: A natural biflavone with versatile pharmacological activities
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Natural products, being richly endowed with curative powers, have become spotlight for biomedical and pharmaceutical research to develop novel therapeutics during recent years. Ginkgetin, a natural non-toxic biflavone, has been shown to exhibit anti-cancer, anti-inflammatory, anti-microbial,
Synergy of Ginkgetin and Resveratrol in Suppressing VEGF-Induced Angiogenesis: A Therapy in Treating Colorectal Cancer.
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Ginkgetin, a biflavone from Ginkgo biloba leaf, and resveratrol, a polyphenol found in grape and wine, are two phytochemicals being identified for its binding to vascular endothelial growth factor (VEGF): the binding, therefore, resulted in the alteration of the physiological roles of
New cytotoxic biflavones from Selaginella doederleinii.
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Three new biflavones, apigenin-(3',8″)-chrysin (1), (2S)-2,3-Dihydroametoflavone 5,4'-dimethyl ether (2), and (2S)-5″,7″-Dihydroxy-2″-phenoxychromonyl-(4'″,3')-naringenin (3), together with seven known biflavones (4-10) were isolated from the 75% EtOH extract of Selaginella doederleinii. The
Preparative isolation of six anti-tumour biflavonoids from Selaginella doederleinii Hieron by high-speed counter-current chromatography.
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BACKGROUND
Biflavonoids are the primary constituents of Selaginella doederleinii Hieron, to which different bioactivities have been attributed, including anti-cancer, anti-inflammatory, anti-oxidant, anti-fungal and anti-virus activity. However, effective methods for separation of these compounds
Bioactive flavones and biflavones from Selaginella moellendorffii Hieron.
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Three new flavones named 5-carboxymethyl-4',7-dihydroxyflavone (1), its ethyl ester (2) and butyl ester (3) were isolated from the herb Selaginella moellendorffii Hieron., together with ten known compounds. Their structures were elucidated on the basis of spectroscopic and chemical analysis.
S-phase accumulation of Candida albicans by anticandidal effect of amentoflavone isolated from Selaginella tamariscina.
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Amentoflavone, which is a biflavone derived from various plants, has been known to possess various biological activities including anti-tumor and anti-inflammatory activity. In the previous study, we reported antifungal effect of amentoflavone isolated from an ethyl acetate extract of Selaginella
Chemical constituents of Cyperus rotundus L. and their inhibitory effects on uterine fibroids.
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BACKGROUND
Xiang Fu (Cyperus rotundus L) enters the liver, spleen and triple warmer meridians, and has qi stagnation-removing, qi circulation-promoting, menstruation-regulating and pain-relieving effects. Besides, it can improve ovarian function, and has hypolipidemic, hypoglycemic and
Chamaejasmin B exerts anti-MDR effect in vitro and in vivo via initiating mitochondria-dependant intrinsic apoptosis pathway.
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Multidrug resistance (MDR) is the main obstacle limiting the efficacy of cancer chemotherapy. Looking for novel anti-MDR agents is an important way to conquer cancer drug resistance. We recently established that chamaejasmin B (CHB), a natural biflavone from Stellera chamaejasme L., is the major
Flavones and Lignans from the Stems of Wikstroemia scytophylla Diels.
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BACKGROUND
The genus Wikstroemia has about 70 species, but only a limited number of species have been studied chemically. Wikstroemia indica has long been used as a traditional crude drug in China. However, there is no report about the bioactivity of Wikstroemia scytophylla.
OBJECTIVE
This paper
Pharmacokinetics, Tissue Distribution and Protein Binding Studies of Chrysocauloflavone I in Rats.
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Chrysocauloflavone I, an unfrequent biflavonoid, was purified from Selaginella doederleinii in this study. It showed cytotoxic effects on three human cancer cells, NCI-H1975, A549, and HepG-2, in vitro. In silico assessment of the physicochemical properties was performed for predicting the
(I-3,II-3)-Biacacetin-mediated cell death involves mitochondria.
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Dysregulation of the dynamic balance between cell proliferation and cell death leads to several malignancies including cancer. Biflavones are known to possess anti-proliferative activity against numerous cancer cell lines. The current study was undertaken to understand the mechanism of action of the
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