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Hanaa M Sayed et al.
Natural product research, 22(17), 1487-1497 (2008-11-22)
Further phytochemical study on the aerial parts of Cyperus rotundus L. led to the isolation of a fructose-amino acid conjugate, N-(1-deoxy-alpha-D-fructos-1-yl)-L-tryptophan (16) and its tautomers, in addition to n-butyl-beta-D-fructopyranoside (1), ethyl-alpha-D-glucopyranoside (2), adenosine (3), (-)-(E)-caffeoylmalic acid (4), vitexin (5), isovitexin
Hayoung Yoo et al.
Inflammation, 37(5), 1705-1717 (2014-04-29)
High mobility group box-1 (HMGB1) protein acts as a late mediator of severe vascular inflammatory conditions. Orientin has been known to have anxiolytic and antioxidative activities. However, the effect of orientin on HMGB1-induced inflammatory response has not been studied. We
Tie-Jun Ling et al.
Molecules (Basel, Switzerland), 15(11), 8469-8477 (2010-11-23)
Four phenolics, salviaplebeiaside (1), γ-tocopherol (2), chrysosplenol-D (4), and isovitexin (5), along with α-tocoquinone (3) and β-sitosterol (6) were isolated from the aerial parts of Vitex negundo var. cannabifolia. The isolation was performed using bio-assay tracking experiments. The structures of
Monika A Zielińska-Pisklak et al.
Journal of pharmaceutical and biomedical analysis, 102, 54-63 (2014-09-23)
The antioxidant activity of the crude extract (60% ethanol) from the leaves of Desmodium adscendens (Sw.) DC. (Fabaceae) was observed in DPPH, xanthine/xanthine oxidase, lipid peroxydation and neutrophils burst tests. Further activity-guided fractionation on C18 column (water, 20% methanol, 50%
Tae-Gyu Nam et al.
Food chemistry, 170, 97-101 (2014-10-13)
It is known that common buckwheat sprouts contain several flavonoids, including orientin, isoorientin, vitexin, isovitexin, rutin, and quercetrin, whereas tartary buckwheat sprouts contain only rutin. In this study, we evaluated flavonoids present in buckwheat sprouts and identified a previously unreported
Cong-long Xia et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 33(16), 1988-1990 (2008-12-18)
To isolate and identify the chemical constituents of 95% alcohol extract from Swertia delavayi. The compounds were isolated and purified by column chromatogrphy and their structures were identified by the physicochemical properties and spectral analyses. Seven compounds were isolated and
Hans Wohlmuth et al.
Biological & pharmaceutical bulletin, 33(6), 1015-1018 (2010-06-05)
Passionflower (Passiflora incarnata L.) is used in phytotherapy as a mild sedative and anxiolytic agent. In the literature it is clear this plant shows considerable qualitative and quantitative variability with respect to its content of C-glycosyl flavones, some of which
He Li et al.
Food chemistry, 135(4), 2942-2946 (2012-09-18)
Mung bean soup (MBS) has been traditionally taken as a kind of health food in China. To learn the mechanisms underlying its health benefits, antioxidant capacities of the soup prepared with three cultivars of mung bean were measured. The highest
Jin-Lan Wang et al.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 33(10), 1571-1574 (2011-03-02)
To study the chemical constituents of Pharbitis purpurea. The constituents were isolated by silica gel column chromatography, HPLC and recrystallization and their structures were elucidated on the basis of spectral analysis. Fourteen compounds were isolated and identified as daucosterol (1)
Qi Dong et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 32(11), 1048-1051 (2007-08-04)
To study the chemical constituents of Stellaria media. The compounds were isolated with various column chromatography and semi-preparative HPLC. The structures were determined by modem spectroscopic methods (IR, UV, 1H-NMR, 13C-NMR, HMBC, ESI-MS). Five compounds were isolated and identified as
Lin Zhang et al.
Journal of Asian natural products research, 14(2), 121-128 (2012-02-03)
Two novel flavonoid glycosides, 6"'-dihydrophaseoylspinosin (1) and 6″,6"'-diferuloylspinosin (2), were isolated from the MeOH extract of Semen Ziziphi Spinosae, together with six known flavonoids, isovitexin-2″-O-β-(6-O-E-feruloyl)glucopyranoside (3), spinosin (4), isospinosin (5), 6"'-feruloylspinosin (6), swertisin (7), and isovitexin-2″-O-β-d-glucopyranoside (8). The structures of
Poliane Folador et al.
Fitoterapia, 81(8), 1180-1187 (2010-08-04)
The antihyperglycemic effect and mechanism of action of extracts, fractions and compounds from Wilbrandia ebracteata was studied. The crude extract reduced the glycemia, increased glycogen content and serum insulin in hyperglycemic rats. Also, a significant effect was observed with the
Jin Wang et al.
Journal of AOAC International, 93(5), 1376-1383 (2010-12-15)
A simple HPTLC method has been developed for the simultaneous determination of isoorientin, isovitexin, orientin, and vitexin, both pure and in commercial samples of bamboo-leaf flavonoids. The flavone C-glycosides, including isoorientin, isovitexin, orientin, and vitexin, were extracted from bamboo-leaf flavonoids
Filomena Conforti et al.
Fitoterapia, 80(1), 62-67 (2008-11-13)
The present study describes for the first time the in vitro properties of Iris pseudopumila flowers and rhizomes extracts and their constituents. The methanolic extract of rhizomes showed significant anti-inflammatory activity through inhibition of NO production in the murine monocytic
Hong-Peng Yang et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 33(21), 2505-2507 (2009-01-20)
To study the chemical constituents of Gentiana veitchiorum. The chemical constituents were isolated by chromatography and identified by spectral data. Five glycosides, loganic acid (1), gentiopicroside (2), isoorientin 3'-methyl ether (3), isovitexin (4), isoorientin (5) were isolated and identified. Compounds
Panpan Guo et al.
Journal of separation science, 38(7), 1156-1163 (2015-01-27)
A sensitive and selective high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry method has been developed and validated for the simultaneous determination of 25 active constituents, including 21 flavonoids and four phenolic acids in the total flavonoids extract
Marta Gazal et al.
Brain research bulletin, 108, 10-17 (2014-08-12)
Chronic stressful stimuli influence disease susceptibility to depression, cardiovascular, metabolic and neurodegenerative disorders. The present work investigated antidepressant and antioxidant properties of the aqueous extract from Cecropia pachystachya in a mouse model of chronic unpredictable stress (CUS). Our results indicated
C Y Choo et al.
Journal of ethnopharmacology, 142(3), 776-781 (2012-06-12)
The leaves of Ficus deltoidea are used as a traditional medicine by diabetes patients in Malaysia. The objective of the study is to identify and evaluate bioactive constituents with in vivo α-glucosidase inhibition. The partitioned extracts, subfractions and pure bioactive
Chong Yan et al.
Biomedical chromatography : BMC, 27(2), 228-232 (2012-06-19)
An LC-MS/MS method was developed for the simultaneous determination of vitexin and isovitexin in rat plasma, using puerarin as the internal standard (IS). Plasma samples extracted with protein precipitation procedure were separated on a Diamonsil® C(18) column (150 × 4.6
Yujie Fu et al.
Journal of separation science, 31(2), 268-275 (2008-01-16)
A method based on ultrasonic extraction (USE) followed by LC-MS is presented for the determination of vitexin and isovitexin in pigeonpea extracts in this study. The influential parameters of the USE procedure were optimized, and the optimal conditions were as
Yi-Pei Lin et al.
Phytochemistry, 70(9), 1173-1181 (2009-07-25)
A platform for screening drugs for their ability to protect neuronal cells against cytotoxicity was developed. Nerve growth factor (NGF) differentiates PC12 cells into nerves, and these differentiated PC12 cells enter apoptosis when challenged with 6-hydroxydopamine (6-OHDA). A screening spectrophotometer
Annett Braune et al.
Applied and environmental microbiology, 78(22), 8151-8153 (2012-09-11)
Eubacterium cellulosolvens cleaved the flavone C-glucosides homoorientin and isovitexin to their aglycones luteolin and apigenin, respectively. The corresponding isomers, orientin and vitexin, or other polyphenolic C-glucosides were not deglycosylated. E. cellulosolvens also cleaved several O-coupled glucosides of flavones and isoflavones
Leandro Severo et al.
Life sciences, 257, 117991-117991 (2020-06-23)
Traumatic brain injury (TBI) is a public health problem in which even though 80 to 90% of cases are considered mild, usually starts a sequence of neurological disorders that can last a considerable time. Most of the research of this
María Inés Ragone et al.
Journal of ethnopharmacology, 113(2), 258-266 (2007-07-21)
The spasmolytic effects of an acqueous extract of cedrón (AEC) were studied on rat isolated duodenums. This plant (Aloysia citriodora Palau, Verbenaceae) is widely used for gastrointestinal disorders and as eupeptic in South America. AEC non-competitively inhibited the dose-response curve
An improved HPLC determination of flavonoids in medicinal plant extracts
Pietta.G.P, et al.
Chromatographia, 27(9-10), 509-512 (1989)
Wan Cao et al.
Journal of chromatography. A, 1358, 277-284 (2014-07-23)
A rapid zwitterionic microemulsion electrokinetic chromatography (ZI-MEEKC) approach coupled with light-emitting-diode-induced fluorescence (LED-IF, 480nm) detection was proposed for the analysis of flavonoids. In the optimization process, we systematically investigated the separation conditions, including the surfactants, cosurfactants, pH, buffers and fluorescence
Jong Min Kim et al.
Chemistry & biodiversity, 5(2), 352-356 (2008-02-23)
Ellagic acid (1), 3,3'-di-O-methylellagic acid (2), 3,3',4-tri-O-methylellagic acid (3), isovitexin (4), kaempferol 3-O-beta-D-glucuronide methyl ester (5), quercetin 3-O-alpha-L-arabinopyranosyl-(1-->6)-beta-D-galactopyranoside (6), ursolic acid, pomolic acid, tormentic acid, euscaphic acid, euscaphic acid 28-O-beta-D-glucopyranoside, and maslinic acid were isolated from the AcOEt- and BuOH-soluble
Ning Lei et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 32(10), 918-920 (2007-07-28)
To study the chemical constituents of Arenaria kansuensis. Column chromatographic techniques were applied to isolated constituents. A combination of physico-chemical properties and spectroscopic analysis were used to identify structures of constituents. Five compounds were obtained and elucidated as tricin (1)
Ke Yuan et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 33(19), 2215-2218 (2009-01-27)
To develop a RP-HPLC method for simultaneous determination of orientin, isorientin, vitexin and isovitexin in Lophatherum gracile from different habitat and harvesting time. The HPLC method was applied and the chromatographic column was a Waters XBridge C18 column (4.6 mm
Zhi-Jian Fang et al.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 31(10), 1485-1489 (2009-02-24)
To establish a sensitive and specific method for quality control of Folium Fici Microcarpa, HPLC method was applied for studies on the fingerprint chromatogram of Folium Fici Microcarpa. Isovitexin was used as reference substance to evaluate the chromatogram of 10
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