Separation and determination of coumarins in the root bark of three citrus plants by micellar electrokinetic capillary chromatography.

abstract：:Propagation of DIGITALIS LANATA by shoot tip culture made possible (a) the rapid multiplication of elite plants with the formation of plant clones and (b) the long-term cultivation of these plants which under normal growth conditions would die at the end of the second vegetation period. Optimum conditions were establi...

journal_title：Planta medica

authors： Diettrich B,Mertinat H,Luckner M

更新日期：1990-02-01 00:00:00

abstract：:(3R,6R)-4-methyl-6-(1-methylethyl)-3-phenylmethylperhydro-1,4-oxazine-2,5-dione (1) was isolated from the fruiting bodies of Isaria japonica as an apoptosis-inducing agent. The complete structural assignment of the compound was accomplished on the basis of spectroscopic methods and chemical transformations. Compound 1...

journal_title：Planta medica

authors： Oh H,Kim T,Oh GS,Pae HO,Hong KH,Chai KY,Kwon TO,Chung HT,Lee HS

更新日期：2002-04-01 00:00:00

abstract：:The alkaloidal content of of the stem barks of Hernandia cordigera has been studied and compared to that of other Hernandia species. Main alkaloids are phenolic aporphines. ...

journal_title：Planta medica

authors： Lavault M,Debray MM,Bruneton J

更新日期：1981-05-01 00:00:00

abstract：:An Alkanna orientalis leaf and flower extract inhibited the growth of Staphylococcus aureus, a pathogen that causes an estimated 478 000 hospitalizations in the US annually. Bioassay-guided fractionation of A. orientalis resulted in isolation of the flavonoid sarothrin (5,7,4'-trihydroxy-3,6,8-trimethoxyflavone), whic...

journal_title：Planta medica

authors： Bame JR,Graf TN,Junio HA,Bussey RO 3rd,Jarmusch SA,El-Elimat T,Falkinham JO 3rd,Oberlies NH,Cech RA,Cech NB

更新日期：2013-03-01 00:00:00

abstract：:The accumulation of two dihydrofuroquinoline alkaloids has been studied in seventeen strains of Choisya ternata (Rutaceae) initiated from the same tree. The contents of platydesminium and balfourodinium vary in heavy proportions. The effect of some factors (age of the culture, NAA or glucose concentrations of the medi...

journal_title：Planta medica

authors： Gras M,Crèche J,Chénieux JC,Rideau M

更新日期：1982-12-01 00:00:00

abstract：:Kava (Piper methysticum) is an effective anxiolytic that has been withdrawn from various consumer markets in European countries due to concerns over its hepatotoxicity. It is plausible that the reported hepatotoxicity may be due in part to plant substitution, or an incorrect cultivar, or plant parts being used (such a...

journal_title：Planta medica

authors： Sarris J,Teschke R,Stough C,Scholey A,Schweitzer I

更新日期：2011-01-01 00:00:00

abstract：:Extract of Tan-Shen (Salvia miltiorrhiza, Labiatae), a Chinese traditional crude drug, was reported to show beneficial activity for heart disease. Chemical examination on the extract was performed on the basis of screening for protective action on the ischemic myocardium. Isolated hearts were subjected to hypoxic perf...

journal_title：Planta medica

authors： Yagi A,Fujimoto K,Tanonaka K,Hirai K,Takeo S

更新日期：1989-02-01 00:00:00

abstract：:Two new depsides as well as the known p-hydroxybenzoic acid and its methyl ester, protocatechuic acid, 2-(4-hydroxyphenyl)-ethanol, 2-(3,4-dihydroxyphenyl)-ethanol and the flavonoids kaempferol, quercetin, luteolin and hypolaetin and the glycosides 3- O-beta- D-glucopyranosylquercetin (isoquercitrine), 3- O-beta- D-gl...

journal_title：Planta medica

authors： Hillenbrand M,Zapp J,Becker H

更新日期：2004-04-01 00:00:00

abstract：:Nine isoflavonoids including a new pterocarpene, puemiricarpene, were isolated from the tuberous root of Pueraria mirifica (Leguminosae). The structure of puemiricarpene was determined by spectroscopic means. Estrogenic activity of the isolated isoflavonoids was tested using MCF-7 human breast cancer cells. Moderate a...

journal_title：Planta medica

authors： Chansakaow S,Ishikawa T,Sekine K,Okada M,Higuchi Y,Kudo M,Chaichantipyuth C

更新日期：2000-08-01 00:00:00

abstract：:Extracts of Viscum album L. produced by a specific homogenization procedure contain viscotoxins (VT) and liposome-like membrane vesicles, formed from cellular membranes. Interactions between these membrane structures and viscotoxins are characterized in this work. Binding properties of viscotoxins with mistletoe extra...

journal_title：Planta medica

authors： Winkler K,Jäger S,Leneweit G,Schubert R

更新日期：2008-02-01 00:00:00

abstract：:From leaves of Penstemon barbatus Nutt. a new iridoid glucoside has been isolated. The structure was established mainly by spectroscopic methods ( (1)H-NMR, (13)C-NMR, IR, MS). ...

journal_title：Planta medica

authors： Junior P

更新日期：1982-06-01 00:00:00

abstract：:The culture medium of Beauveria amorpha Hohn. exhibited strong radical scavenging properties. Activity-directed fractionation assisted by a radical scavenging assay on TLC afforded two active compounds which were identified as 6-methyl-2,4-dihydroxyphenyl 4-O-methyl-beta-D-glucopyranoside (1) and (-)-terredionol (2). ...

journal_title：Planta medica

authors： Hu F,Schmidt K,Stoyanova S,Zengzhi L,Gräfe U,Hamburger M

更新日期：2002-01-01 00:00:00

abstract：:Indole alkaloid contents were investigated in leaves of Tabernaemontana pachysiphon (Apocynaceae) trees in the natural habitat, Shimba Hills National Reserve, Kenya. The contents of the major alkaloids apparicine, tubotaiwine, tubotaiwine- N-oxide, and isovoacangine varied with site, leaf age, leaf growth form, positi...

journal_title：Planta medica

authors： Höft M,Verpoorte R,Beck E

更新日期：1998-03-01 00:00:00

abstract：:The present study assessed the absolute and relative bioavailabilities of dodeca-2 E,4 E,8 Z,10 E/ Z-tetraenoic acid isobutylamides (tetraenes), the main bioactive constituents in Echinacea, administered as pure compounds or in the form of an Echinacea purpurea root extract preparation. Tetraenes were administered ora...

journal_title：Planta medica

authors： Ardjomand-Woelkart K,Kollroser M,Magnes C,Sinner F,Frye RF,Derendorf H,Bauer R,Butterweck V

更新日期：2011-11-01 00:00:00

abstract：:O-Methyl (1), O-ethyl (2), and O-butyl (3) 4-[(α-L-rhamnosyloxy) benzyl] thiocarbamate (E), along with 4-(α-L-rhamnosyloxy) benzyl isothiocyanate (4) have been isolated from the aerial parts of Moringa peregrina. The compounds were tested for in vitro activity against Trypanosoma brucei rhodesiense and cytotoxicity in...

journal_title：Planta medica

authors： Ayyari M,Salehi P,Ebrahimi SN,Zimmermann S,Portmann L,Krauth-Siegel RL,Kaiser M,Brun R,Rezadoost H,Rezazadeh S,Hamburger M

更新日期：2014-01-01 00:00:00

abstract：:A gas-chromatographical method is described on which seven pyrrolizidine alkaloids (Fuchsisenecionine, Senecionine, Senecivernine, Senkirkine, Retrorsine, O (7)-Angelylheliotridine and Heliotrine) are determinated in a qualitative way and their ratio of concentration in Senecio fuchsii, vernalis, inaequidens and ovire...

journal_title：Planta medica

authors： Wiedenfeld H,Pastewka U,Stengl P,Röder E

更新日期：1981-02-01 00:00:00

abstract：:Fresh Nagami kumquats (Fortunella margarita) were subjected to hydrodistillation using a Clevenger-type apparatus to obtain volatile oil. The chemical composition of the volatile oil was analyzed by GC-MS using Rtx-5 Sil MS and DB Wax columns. A total of 25 volatile compounds were identified by mass spectra, retention...

journal_title：Planta medica

authors： Jayaprakasha GK,Murthy KN,Demarais R,Patil BS

更新日期：2012-06-01 00:00:00

abstract：:Nitric oxide (NO) and tumor necrosis factor-alpha (TNF-alpha) are the major mediators produced in activated macrophages which contribute to the circulatory failure associated with septic shock. An activity-guided fractionation of an MeOH extract of stem bark of Magnolia obovata afforded two inhibitors of NO production...

journal_title：Planta medica

authors： Son HJ,Lee HJ,Yun-Choi HS,Ryu JH

更新日期：2000-06-01 00:00:00

abstract：:Bioassay-guided fractionation of the hexanic root bark extract of Casearia sylvestris var. lingua led to the isolation of a new clerodane diterpene, whose structure was elucidated as rel-(2 S,5 R,6 R,8 S,9 S,10 R,18 S,19 R)-19-acetoxy-18,19-epoxy-6-hydroxy-18-butanoyloxy-2-(2-methylbutanoyloxy)cleroda-3,13(16), 14-tri...

journal_title：Planta medica

authors： Espindola LS,Vasconcelos Júnior JR,de Mesquita ML,Marquié P,de Paula JE,Mambu L,Santana JM

更新日期：2004-11-01 00:00:00

abstract：:At the early drug discovery stage, the high-throughput parallel artificial membrane permeability assay is one of the most frequently used in vitro models to predict transcellular passive absorption. While thousands of new chemical entities have been screened with the parallel artificial membrane permeability assay, in...

journal_title：Planta medica

authors： Petit C,Bujard A,Skalicka-Woźniak K,Cretton S,Houriet J,Christen P,Carrupt PA,Wolfender JL

更新日期：2016-03-01 00:00:00

abstract：:In this study the first supercritical fluid based protocol for the extraction, analysis, and isolation of six polar compounds, i.e., o-vanillin (1), styracin (2), vanillin (3), trans-cinnamic acid (4), vanillic acid (5), and shikimic acid (6), was developed. First, eight styrax resin products (R1-R8) obtained from var...

journal_title：Planta medica

authors： Scheuba J,Wronski VK,Rollinger JM,Grienke U

更新日期：2017-08-01 00:00:00

abstract：:Bioactivity-directed separation led to the identification of four compounds, viz. denbinobin (1), 3,7-dihydroxy-2,4-dimethoxyphenanthrene (2), 3-methylgigantol (3), and erianthridin (4) from the ethanolic extract of Ephemerantha lonchophylla. Antiplatelet tests were carried out using 4 different aggregation inducers, ...

journal_title：Planta medica

authors： Chen CC,Huang YL,Teng CM

更新日期：2000-05-01 00:00:00

abstract：:Two phenolic triterpenoids, pristimerol (30 µg/mL) and 8- EPI-6-deoxoblepharodol (20 µg/mL), obtained by catalytic reduction of pristimerin, exhibited bacteriostatic action against Staphylococcus epidermidis. This activity was not dependent on the inoculum size and the growth phase although it showed a stronger effect...

journal_title：Planta medica

authors： López MR,de León L,Moujir L

更新日期：2011-05-01 00:00:00

abstract：:Northern Labrador tea, Rhododendron tomentosum ssp. subarcticum, is one of the most commonly used medicinal plants by Inuit and other First Nations peoples of Canada. The phenolic profile and seasonal variation of this commonly used medicinal plant remains largely unknown. To assess optimal harvesting time, R. tomento...

journal_title：Planta medica

authors： Black P,Saleem A,Dunford A,Guerrero-Analco J,Walshe-Roussel B,Haddad P,Cuerrier A,Arnason JT

更新日期：2011-09-01 00:00:00

abstract：:Rutaecarpine is an alkaloid originally isolated from the unripe fruit of Evodia rutaecarpa. Recently, rutaecarpine has been characterized to have an anti-inflammatory activity through cyclooxygenase-2 inhibition. In the present studies, the effects of rutaecarpine on liver cytochrome P450 s (P450s) and P450 s involved...

journal_title：Planta medica

authors： Lee SK,Kim NH,Lee J,Kim DH,Lee ES,Choi HG,Chang HW,Jahng Y,Jeong TC

更新日期：2004-08-01 00:00:00

abstract：:HPLC determinations of the aescin contents in calli and embryoids from leaf explants of AESCULUS HIPPOCASTANUM L. were carried out in order to determine whether it was possible to obtain aescin-forming proliferations IN VITRO. The results indicate that embryogenic calli and embryoids derived from them produce an amoun...

journal_title：Planta medica

authors： Profumo P,Caviglia AM,Gastaldo P,Dameri RM

更新日期：1991-02-01 00:00:00

abstract：:Two new anthraquinones have been isolated from the seeds of PEGANUM HARMALA Linn and the structures established as 3,6-dihydroxy-8-methoxy-2-methylanthraquinone (peganone; 1) and 8-hydroxy-7-methoxy-2-methylanthraquinone (peganone; 2) by spectral correlations and chemical evidences. ...

journal_title：Planta medica

authors： Pitre S,Srivastava SK

更新日期：1987-02-01 00:00:00

abstract：:In natural product chemistry, it is often crucial to determine sugar composition as well as the absolute configuration of each monosaccharide in glycosides. An ultra-performance liquid chromatography method using both photodiode array (PDA) and mass spectrometry detectors (UPLC-UV/MS) was developed for qualitative ana...

journal_title：Planta medica

authors： Wang YH,Avula B,Fu X,Wang M,Khan IA

更新日期：2012-05-01 00:00:00

abstract：:The antiinflammatory activity of borjatriol (a diterpenoid isolated from SIDERITIS MUGRONENSIS Borja) was tested using the cotton pellet-granuloma assay. The compound inhibited the granuloma weight and the serum lysozyme activity in a dose-dependently way. The determination of this enzyme has allowed us to distinguish...

journal_title：Planta medica

authors： Villar A,Salom R,Alcaraz MJ

更新日期：1984-02-01 00:00:00

abstract：:Ten alkaloids were isolated from the bulb of CORYDALIS HSUCHOWENSIS W. Y. Lian nov. ined. Among them nine alkaloids are known, identified as (-)-stylopine ( 1), cheilanthifoline ( 2), (+)-adlumidine ( 3), (+)-bicuculline ( 4), sibiricine ( 5), humosine A ( 6), (+)-bulbocapnine ( 7), (-)-scoulerine ( 8), and protopine ...

journal_title：Planta medica

authors： Zhou JY,Tong XJ,Lian WY,Fang QC

更新日期：1991-04-01 00:00:00