Phytotoxins from the fungus Malbranchea aurantiaca.

abstract：:Eleven indole alkaloids, comprising four corynanthean, two eburnane, one aspidofractinine, one secoleuconoxine, one andranginine, and two pauciflorine type alkaloids were isolated from the stem-bark and leaf extracts of Kopsia pauciflora. Their structures were determined using NMR and MS analyses. The catharinensine t...

journal_title：Phytochemistry

authors： Gan CY,Yoganathan K,Sim KS,Low YY,Lim SH,Kam TS

更新日期：2014-12-01 00:00:00

abstract：:Extracts of carboxylic acids from immature fruits of strawberry (Fragaria x ananassa Duch. cv. Elsanta) were analysed for gibberellins by combined gas chromatography-mass spectrometry. The following previously characterised gibberellins were identified by comparison of their mass spectra and Kovats retention indices (...

journal_title：Phytochemistry

authors： Blake PS,Taylor DR,Crisp CM,Mander LN,Owen DJ

更新日期：2000-12-01 00:00:00

abstract：:Nine cycloartane triterpenoids, including two new derivatives 22,25-dihydroxy-cycloart-23E-en-3-one and 24-methylenecycloartane-3 beta,22-diol have been isolated from leaves of Guarea macrophylla. The structures were elucidated by interpretation of spectral data, mainly 1H and 13C NMR, including bidimensional analysis...

journal_title：Phytochemistry

authors： Lago JH,Roque NF

更新日期：2002-06-01 00:00:00

abstract：:In order to study the evolution of pathways of plant secondary metabolism, we use the biosynthesis of pyrrolizidine alkaloids (PAs) as a model system. PAs are regarded as part of the plant's constitutive defense against herbivores. Homospermidine synthase (HSS) is the first specific enzyme of PA biosynthesis. The gene...

journal_title：Phytochemistry

authors： Nurhayati N,Gondé D,Ober D

更新日期：2009-03-01 00:00:00

abstract：:As a basis for future investigations of evolutionary trajectories and biosynthetic mechanisms underlying variations in glucosinolate structures, we screened members of the crucifer tribe Cardamineae by HPLC-MS/MS, isolated and identified glucosinolates by NMR, searched the literature for previous data for the tribe, a...

journal_title：Phytochemistry

authors： Olsen CE,Huang XC,Hansen CIC,Cipollini D,Ørgaard M,Matthes A,Geu-Flores F,Koch MA,Agerbirk N

更新日期：2016-12-01 00:00:00

abstract：:Lignin is a complex polymer formed by the oxidative polymerization of hydroxycinnamyl alcohol derivatives termed monolignols. The major monolignols in dicotyledonous angiosperm lignin are monomethylated guaiacyl (G) units derived from coniferyl alcohol, and dimethylated syringyl (S) units derived from sinapyl alcohol....

journal_title：Phytochemistry

authors： Dixon RA,Chen F,Guo D,Parvathi K

更新日期：2001-08-01 00:00:00

abstract：:Vernonia sensu lato is the largest and most complex genus of the tribe Vernonieae (Asteraceae). The tribe is chemically characterized by the presence of sesquiterpene lactones and flavonoids. Over the years, several taxonomic classifications have been proposed for Vernonia s.l. and for the tribe; however, there has be...

journal_title：Phytochemistry

authors： Gallon ME,Monge M,Casoti R,Da Costa FB,Semir J,Gobbo-Neto L

更新日期：2018-06-01 00:00:00

abstract：:The present study presents comprehensive chemical analyses of cuticular wax mixtures of the bamboo Phyllostachys aurea. The epicuticular and intracuticular waxes were sampled selectively from the adaxial side of leaves on young and old plants and investigated by gas chromatography-mass spectrometry and flame ionizatio...

journal_title：Phytochemistry

authors： Racovita RC,Jetter R

更新日期：2016-10-01 00:00:00

abstract：:A lignan diglycoside, (-)-isolariciresinol 3alpha-O-beta-apiofuranosyl-(1-->2)-O-beta-glucopyranoside, and a megastigmane glucoside, sauroposide, were isolated from the aerial part of Sauropus androgynus together with (+)-isolariciresinol 3alpha-O-beta-glucopyranoside, (-)-isolariciresinol 3alpha-O-beta-glucopyranosid...

journal_title：Phytochemistry

authors： Kanchanapoom T,Chumsri P,Kasai R,Otsuka H,Yamasaki K

更新日期：2003-08-01 00:00:00

abstract：:From the roots of Silene jenisseensis a new trans-p-methoxycinnamoyl triterpene saponin has been isolated along with its cis-p-methoxycinnamoyl isomer as an inseparable mixture. Their structures were established by chemical means and spectroscopic methods including 1D- and 2D-homonuclear and heteronuclear correlation ...

journal_title：Phytochemistry

authors： Lacaille-Dubois MA,Hanquet B,Cui ZH,Lou ZC,Wagner H

更新日期：1995-09-01 00:00:00

abstract：:The essential oil of the east African sandalwood Osyris tenuifolia was investigated by chromatographic and spectroscopic methods. Beside several already known sesquiterpenes four new compounds could be isolated by preparative gas chromatography and their structures investigated by mass spectroscopy and NMR techniques....

journal_title：Phytochemistry

authors： Kreipl AT,König WA

更新日期：2004-07-01 00:00:00

abstract：:A xanthone derivative, named gaboxanthone (1), has been isolated from the seed shells of Symphonia globulifera, together with known compounds, symphonin (2), globuliferin (3), guttiferone A (4), sistosterol, oleanolic acid and methyl citrate. The structure of the compound was assigned as 5,10-dihydroxy-8,9-dimethoxy-2...

journal_title：Phytochemistry

authors： Ngouela S,Lenta BN,Noungoue DT,Ngoupayo J,Boyom FF,Tsamo E,Gut J,Rosenthal PJ,Connolly JD

更新日期：2006-02-01 00:00:00

abstract：:Diterpene esters of the phorbol and ingenol types are known to be highly active tumor promoting agents that typically occur in members of the Euphorbiaceae. In the present work, Euphorbia leuconeura, a rare indoor plant, is analyzed for its tumor promoting potential. Latex as well as total leaf extracts exhibited Epst...

journal_title：Phytochemistry

authors： Vogg G,Mattes E,Rothenburger J,Hertkorn N,Achatz S,Sandermann H Jr

更新日期：1999-05-01 00:00:00

abstract：:The degradation of the beta-conglycinin protein reserves in soybean seeds during germination and early growth begins with the proteolysis of its alpha and alpha' subunits by an enzyme called Protease C1. In the pathway, a number of proteolytic intermediates are produced and subsequently degraded. Determination of the ...

journal_title：Phytochemistry

authors： Tan-Wilson AL,Liu X,Chen R,Qi X,Wilson KA

更新日期：1996-05-01 00:00:00

abstract：:Along with three known drimanes, polygodial. 1-beta-(p-methoxycinnamoyl) polygodial and mukaadial, the sesquiterpene drimane named drimanial was isolated from the bark of Drimys winteri (Winteraceae). Its structure was elucidated based on spectroscopic evidence. Drimanial exhibited antinociceptive action against aceti...

journal_title：Phytochemistry

authors： Malheiros A,Filho VC,Schmitt CB,Santos ARS,Scheidt C,Calixto JB,Monache FD,Yunes RA

更新日期：2001-05-01 00:00:00

abstract：:Three abietane diterpenoid dimers, bisprioterones A-C (1-3), were isolated from roots of the Chinese folk medicinal plant Salvia prionitis Hance (Labiatae). Compounds 1-3 possessed two different abietane diterpenoid skeleta, which were linked via either a C-C single bond (1 and 2) or an ether bridge (3). Their structu...

journal_title：Phytochemistry

authors： Xu J,Chang J,Zhao M,Zhang JS

更新日期：2006-04-01 00:00:00

abstract：:The unique series of C-2''-acylated C-glycosylflavones is extended by the discovery of the C-8-glucosyl derivatives 2''-O-galloylvitexin and 2''-O-galloylorientin and their C-6 analogues 2''-O-galloylisovitexin and 2''-O-galloylisoorientin, representing the first described O-galloyl-C-glycosylflavones. They are accomp...

journal_title：Phytochemistry

authors： Latté KP,Ferreira D,Venkatraman MS,Kolodziej H

更新日期：2002-02-01 00:00:00

abstract：:Proteomic analyses of soybean seedlings responding to flooding were conducted to identify key proteins involved. The seeds were germinated on a spongy matrix for two days, and then subjected to flooding for three days. After flooding, the total number of roots, the length of the main root, the lengths of the lateral a...

journal_title：Phytochemistry

authors： Shi F,Yamamoto R,Shimamura S,Hiraga S,Nakayama N,Nakamura T,Yukawa K,Hachinohe M,Matsumoto H,Komatsu S

更新日期：2008-04-01 00:00:00

abstract：:Ten flavonoid compounds were isolated from the dried leaves of Polygonum hydropiper L. (Laksa leaves), and identified as 3-O-alpha-L-rhamnopyranosyloxy-3',4',5,7-tetrahydroxyflavone; 3-O-beta-D-glucopyranosyloxy-4',5,7-trihydroxyflavone; 6-hydroxyapigenin; 6"-O-(3,4,5-trihydroxybenzoyl) 3-O-beta-D-glucopyranosyloxy-3'...

journal_title：Phytochemistry

authors： Peng ZF,Strack D,Baumert A,Subramaniam R,Goh NK,Chia TF,Tan SN,Chia LS

更新日期：2003-01-01 00:00:00

abstract：:The transition state of adenosine nucleosidase (EC 3.2.2.7) isolated from yellow lupin (Lupinus luteus) was determined based upon a series of heavy atom kinetic isotope effects. Adenosine labeled with 13C, 2H, and 15N was analyzed by liquid chromatography/electrospray mass spectrometry to determine kinetic isotope eff...

journal_title：Phytochemistry

authors： Bates C,Kendrick Z,McDonald N,Kline PC

更新日期：2006-01-01 00:00:00

abstract：:3β-Hydroxy-5β-cholestan-6-one was identified in the EtOAc extract of Ajuga hairy roots by micro-analysis using LC-MS/MS in the multiple reaction mode (MRM). Furthermore, administration of (2,2,4,4,7,7-(2)H6)- and (2,2,4,4,6,7,7-(2)H7)-cholesterols to the hairy roots followed by LC-MS/MS analysis of the EtOAc extract o...

journal_title：Phytochemistry

authors： Fujimoto Y,Maeda I,Ohyama K,Hikiba J,Kataoka H

更新日期：2015-03-01 00:00:00

abstract：:Aglaia argentea leaves yielded three new cycloartanes: argenteanones A and B, and argenteanol. The first two possess cytotoxic activity against KB cells (IC50 7.5 micrograms ml-1 and 6.5 micrograms ml-1 respectively). Structural elucidation was done by two-dimensional NMR spectroscopy. ...

journal_title：Phytochemistry

authors： Omobuwajo OR,Martin MT,Perromat G,Sevenet T,Awang K,Païs M

更新日期：1996-03-01 00:00:00

abstract：:We have previously reported the purification and partial characterization of two cationic peroxidases from the cell walls of seeds and seedlings of the South American conifer, Araucaria araucana. In this work, we have studied the amino acid composition and NH2-terminal sequences of both enzymes. We also compare the da...

journal_title：Phytochemistry

authors： Riquelme A,Cardemil L

更新日期：1995-05-01 00:00:00

abstract：:The structure of cephalaria saponin B, isolated from Cephalaria transsylvanica was elucidated as 3-O-([beta-D-xylopyranosyl(1-->4)-alpha-L-rhamnopyranosyl(1-->2)-beta-D- xylopyranosyl]-[28-O-beta-D-glucopyranosyl])-3beta,23-dihydroxy-12(13)-oleanene-28-oic acid. ...

journal_title：Phytochemistry

authors： Alankuş-Calişkan O,Anil H

更新日期：1995-04-01 00:00:00

abstract：:The nematicidal 5-pentyl-2-furaldehyde and the cytotoxic sesquiterpene dermatolactone were isolated from the extracts of an Ascomycete belonging to the Dermateaceae. The furan has previously been reported from the Basidiomycete Irpex lacteus, while dermatolactone is a new compound the structure of which was determined...

journal_title：Phytochemistry

authors： Mayer A,Köpke B,Anke H,Sterner O

更新日期：1996-09-01 00:00:00

abstract：:The methanolic extract from the pericarps of Sapindus rarak DC. was found to show pancreatic lipase inhibitory activity (IC50=ca. 614 microg/mL). From the extract, oleanane-type triterpene oligoglycosides, rarasaponins I-III (1-3), and raraoside A (4), were isolated together with 13 known saponins and four known sesqu...

journal_title：Phytochemistry

authors： Morikawa T,Xie Y,Asao Y,Okamoto M,Yamashita C,Muraoka O,Matsuda H,Pongpiriyadacha Y,Yuan D,Yoshikawa M

更新日期：2009-06-01 00:00:00

abstract：:Incubation of the diterpene 2beta-hydroxy-ent-13-epi-manoyl oxide with Gibberella fujikuroi afforded in good yield 2beta,6beta-dihydroxy-ent-13-epi-manoyl oxide, 2beta,12beta-dihydroxy-ent-13-epi-manoyl oxide and 2beta,20-dihydroxy-ent-13-epi-manoyl oxide, confirming that although ent-13-epi-manoyl oxide is a final me...

journal_title：Phytochemistry

authors： Fraga BM,González P,Hernández MG,Suárez S

更新日期：2003-01-01 00:00:00

abstract：:Glucosinolates are plant secondary metabolites that are part of a plant defence system against pathogens and pests, the myrosinase-glucosinolate system, in which glucosinolates get activated by enzymic degradation through thioglucoside glucohydrolases called myrosinases. Epithiospecifier protein (ESP) and nitrile-spec...

journal_title：Phytochemistry

authors： Kong XY,Kissen R,Bones AM

更新日期：2012-12-01 00:00:00

abstract：:Injury to plant products by harvest and postharvest operations induces respiration rate and increases the demand for respiratory substrates. Alterations in primary carbon metabolism are likely to support the elevated demand for respiratory substrates, although the nature of these alterations is unknown. To gain insigh...

journal_title：Phytochemistry

authors： Lafta AM,Fugate KK

更新日期：2011-04-01 00:00:00

abstract：:Eight previously undescribed ditepenoids, including four oxygenated abietanes (roscotanes A-D) and four oxygenated pimaranes (roscoranes A-D), along with twelve known diterpenoids were isolated from the whole plants of Kaempferia roscoeana. Their structures were elucidated by extensive spectroscopic analysis, and the ...

journal_title：Phytochemistry

authors： Boonsombat J,Mahidol C,Chawengrum P,Reuk-Ngam N,Chimnoi N,Techasakul S,Ruchirawat S,Thongnest S

更新日期：2017-11-01 00:00:00