Composition of polyphenol and polyamide compounds in common ragweed (Ambrosia artemisiifolia L.) pollen and sub-pollen particles.

abstract：:The biotransformation of 7alpha-hydroxy-ent-kaur-16-ene (epi-candol A) by the fungus Gibberella fujikuroi gave 7alpha,16alpha,17-trihydroxy-ent-kaur-16-ene and a seco-ring B derivative, fujenoic acid, whilst the incubation of candicandiol (7alpha,18-dihydroxy-ent-kaur-16-ene) and canditriol (7alpha,15alpha,18-trihydro...

journal_title：Phytochemistry

authors： Fraga BM,Bressa C,González P,Guillermo R,Hernández MG,Suárez S

更新日期：2007-06-01 00:00:00

abstract：:A study of the chemistry and antibacterial activity of Scrophularia deserti led to the isolation of eight compounds, including the metabolite 3(zeta)-hydroxy-octadeca-4(E),6(Z)-dienoic acid (1). The known compounds ajugoside (2), scropolioside B (3), 6-O-alpha-L-rhamnopyranosylcatalpol (4), buddlejoside A(8) (5), scro...

journal_title：Phytochemistry

authors： Stavri M,Mathew KT,Gibbons S

更新日期：2006-07-01 00:00:00

abstract：:Taxol content in the bark of Taxus baccata trees growing in a homogenous (uniform) environment at Jageshwar, District Almora in Central Himalaya has been quantified. The average taxol concentration in the bark of sampled trees was 0.0558+/-0.008% (of dry wt.) and was about 64% higher for male plants (averaged across t...

journal_title：Phytochemistry

authors： Nadeem M,Rikhari HC,Kumar A,Palni LM,Nandi SK

更新日期：2002-07-01 00:00:00

abstract：:Two unusual triterpenoids, (24S)-24-methyl-25,32-cyclo-5alpha-lanosta-9(11)-en-3beta-ol and (24S)-24-methyl-25,32-cyclo-cycloartane-3beta-ol, were isolated from leaves of Pandanus boninensis along with known triterpenoids and lignans. Their structures were established on the basis of spectroscopic methods and X-ray an...

journal_title：Phytochemistry

authors： Inada A,Ikeda Y,Murata H,Inatomi Y,Nakanishi T,Bhattacharyya K,Kar T,Bocelli G,Cantoni A

更新日期：2005-12-01 00:00:00

abstract：:Four new allose-containing triterpenoid saponosides, scabriosides A, B, C and D were isolated from the roots of Scabiosa rotata. Their structures were established as 3-O-beta-D-xylopyranosyl-28-O-[beta-D-allopyranosyl (1-->6)-beta-D-glucopyranosyl]-pomolic acid, 3-O-[alpha-L-rhamnopyranosyl (1-->2)-beta-D-xylopyranosy...

journal_title：Phytochemistry

authors： Baykal T,Panayir T,Tasdemir D,Sticher O,Calis I

更新日期：1998-07-01 00:00:00

abstract：:From the aerial parts of Clerodendrum inerme, two new sterols (4alpha-methyl-24beta-ethyl-5alpha-cholesta-14, 25-dien-3beta-ol and 24beta-ethylcholesta-5, 9(11), 22E-trien-3beta-ol) and a new aliphatic ketone (11-pentacosanone) were isolated together with another known aliphatic ketone (6-nonacosanone) and a diterpene...

journal_title：Phytochemistry

authors： Pandey R,Verma RK,Singh SC,Gupta MM

更新日期：2003-06-01 00:00:00

abstract：:Three highly oxygenated guaianolides were isolated from the aerial parts of Ajania fruticulosa along with 17 known phytochemicals including a triterpene (alpha-amyrin), two plant sterols (beta-sitosterol, daucosterol), four flavonoids (axillarin, centaureidin, santin and 5,7,4'-trihydroxy-3,3'-dimethoxyflavone), and t...

journal_title：Phytochemistry

authors： Meng JC,Hu YF,Chen JH,Tan RX

更新日期：2001-12-01 00:00:00

abstract：:Four Mexican Nymphaea species, N. ampla, N. pulchella, N. gracilis and N. elegans belonging to subgenera Brachyceras were analyzed. In this work two 5-glycosyl isoflavones, 7,3',4'-trihydroxy-5-O-beta-D-(2''-acetyl)-xylopyranosylisoflavone (1) and 7,3',4'-trihydroxy-5-O-alpha-L-rhamnopyranosylisoflavone (2), were isol...

journal_title：Phytochemistry

authors： Marquina S,Bonilla-Barbosa J,Alvarez L

更新日期：2005-04-01 00:00:00

abstract：:Extracts from the lignifying xylem of Sitka spruce that were enriched in cell-wall-associated glycoproteins contained peroxidase and oxidase activity and readily formed lignin-like water-insoluble dehydrogenation polymers (DHPs) from coniferyl alcohol (CA) when supplied with H2O2. During the formation of DHPs, the abu...

journal_title：Phytochemistry

authors： McDougall GJ

更新日期：2001-05-01 00:00:00

abstract：:The fruits of Psoralea corylifolia, known as Psoraleae Fructus (Buguzhi in Chinese), are traditionally used for the treatment of spermatorrhea, nephritis, asthma, pollakiuria, and various inflammatory diseases. Three previously undescribed isoflavone derivatives, 7-O-methylcorylifol A, 7-O-isoprenylcorylifol A, and 7-...

journal_title：Phytochemistry

authors： Chen CH,Hwang TL,Chen LC,Chang TH,Wei CS,Chen JJ

更新日期：2017-11-01 00:00:00

abstract：:Chloroacetamide herbicides inhibit very-long-chain fatty acid elongase, and it has been suggested that covalent binding to the active site cysteine of the condensing enzyme is responsible [Pest Manage Sci 56 (2000), 497], but direct evidence was not available. The proposal implied that other condensing enzymes might a...

journal_title：Phytochemistry

authors： Eckermann C,Matthes B,Nimtz M,Reiser V,Lederer B,Böger P,Schröder J

更新日期：2003-11-01 00:00:00

abstract：:The role and fate of Jasmonoyl-Phenylalanine (JA-Phe), an understudied conjugate in the jasmonate pathway remain to be unraveled. We addressed here the possibility of JA-Phe oxidative turnover by cytochrome P450s of the CYP94 family. Leaf wounding or fungal infection in Arabidopsis resulted in accumulation of JA-Phe, ...

journal_title：Phytochemistry

authors： Widemann E,Grausem B,Renault H,Pineau E,Heinrich C,Lugan R,Ullmann P,Miesch L,Aubert Y,Miesch M,Heitz T,Pinot F

更新日期：2015-09-01 00:00:00

abstract：:The methanol extract from Bellis perennis (Asteraceae) flowers was found to promote collagen synthesis in normal human dermal fibroblasts (NHDFs). Seven oleanane-type triterpene saponins, perennisosides XIII-XIX, and two known saponins, bellissaponins BS5 and BS9, were isolated from the methanol extract. The structure...

journal_title：Phytochemistry

authors： Morikawa T,Ninomiya K,Takamori Y,Nishida E,Yasue M,Hayakawa T,Muraoka O,Li X,Nakamura S,Yoshikawa M,Matsuda H

更新日期：2015-08-01 00:00:00

abstract：:The antimicrobially active EtOH extracts of Maytenus heterophylla yielded a new dihydroagarofuran alkaloid,1beta-acetoxy-9alpha-benzoyloxy-2beta,6alpha-dinicotinoyloxy-beta-dihydroagarofuran, together with the known compounds beta-amyrin, maytenfolic acid, 3alpha-hydroxy-2-oxofriedelane-20alpha-carboxylic acid, lup-20...

journal_title：Phytochemistry

authors： Orabi KY,Al-Qasoumi SI,El-Olemy MM,Mossa JS,Muhammad I

更新日期：2001-10-01 00:00:00

abstract：:The secondary metabolites in the roots, leaves and flowers of the common dandelion (Taraxacum officinale agg.) have been studied in detail. However, little is known about the specific constituents of the plant's highly specialized laticifer cells. Using a combination of liquid and gas chromatography, mass spectrometry...

journal_title：Phytochemistry

authors： Huber M,Triebwasser-Freese D,Reichelt M,Heiling S,Paetz C,Chandran JN,Bartram S,Schneider B,Gershenzon J,Erb M

更新日期：2015-07-01 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：:Aerial parts of Ellipeiopsis cherrevensis contained the polyoxygenated cyclohexenes zeylenol, ferrudiol and three analogs, ellipeiopsols A, B and C. The C-1 stereochemistry of ferrudiol has been revised. ...

journal_title：Phytochemistry

authors： Kijjoa A,Bessa J,Pinto MM,Anatachoke C,Silva AM,Eaton G,Herz W

更新日期：2002-03-01 00:00:00

abstract：:Twenty phenolic compounds, representatives of proanthocyanidins and gallic acid/hexahydroxyldiphenic acid esters of glucose, have been assessed for their ability to inhibit binding of specific radioligands to 16 receptors. The receptors utilized were alpha 1-, alpha 2- and beta-adrenoceptors, adenosine 1, dopamine 1 a...

journal_title：Phytochemistry

authors： Zhu M,Phillipson JD,Greengrass PM,Bowery NE,Cai Y

更新日期：1997-02-01 00:00:00

abstract：:Crude pineapple proteases extract (aka stem bromelain; EC 3.4.22.4) is an important proteolytic mixture that contains enzymes belonging to the cysteine proteases of the papain family. Numerous studies have been reported aiming at the fractionation and characterization of the many molecular species present in the extra...

journal_title：Phytochemistry

authors： Matagne A,Bolle L,El Mahyaoui R,Baeyens-Volant D,Azarkan M

更新日期：2017-06-01 00:00:00

abstract：:The hypersensitive response (HR), elicited when resistant hosts are infected by incompatible races of biotrophic fungi, has been researched extensively. New studies on host responses to necrotrophic fungi are beginning to show that when the HR occurs in hosts colonized by necrotrophs, fungal growth is accelerated rath...

journal_title：Phytochemistry

authors： Mayer AM,Staples RC,Gil-ad NL

更新日期：2001-09-01 00:00:00

abstract：:Maytenus aquifolium (Celastraceae) and Salacia campestris (Hippocrateaceae) species accumulate friedelane and quinonemethide triterpenoids in their leaves and root bark, respectively. Enzymatic extracts obtained from leaves displayed cyclase activity with conversion of the substrate oxidosqualene to the triterpenes, 3...

journal_title：Phytochemistry

authors： Corsino J,de Carvalho PR,Kato MJ,Latorre LR,Oliveira OM,Araújo AR,Bolzani VD,França SC,Pereira AM,Furlan M

更新日期：2000-12-01 00:00:00

abstract：:Indole alkaloids, oxytrofalcatins A-F (1-6), together with five other known alkaloids (7-11), were isolated from the roots of Oxytropis falcata. Their structures were elucidated by comprehensive spectroscopic analyses, including using 1D and 2D NMR spectroscopy and mass spectrometry. This is the first report of N-benz...

journal_title：Phytochemistry

authors： Chen WH,Wu QX,Wang R,Shi YP

更新日期：2010-06-01 00:00:00

abstract：:Glucosinolate content of leaves and roots, diversity in leaf pubescence, and resistance to two near-isogenic lines of the flea beetle Phyllotreta nemorum with or without an R-gene, were determined for 27 accessions of 7 Barbarea taxa, i.e. B. stricta, B. orthoceras, B. intermedia, B. verna, B. vulgaris var. vulgaris, ...

journal_title：Phytochemistry

authors： Agerbirk N,Ørgaard M,Nielsen JK

更新日期：2003-05-01 00:00:00

abstract：:A new acylated anthocyanin was isolated from the red-purple flowers of x Laeliocattleya cv Mini Purple as one of the major anthocyanins. The structure of this pigment was determined to be cyanidin 3-O-[6-O-(malonyl)-beta-D-glucopyranoside]-7-O-[6-O-(trans-p- coumaryl)-beta-D-glucopyranoside]-3'-O-[6-O-[trans-4-O-[6-O-...

journal_title：Phytochemistry

authors： Tatsuzawa F,Saito N,Yokoi M,Shigihara A,Honda T

更新日期：1994-11-01 00:00:00

abstract：:Amino acid δ15N values of foliage of various plant taxa, grown at the experimental farm stations of North Wyke, UK and Bad Lauchstädt, Germany were determined by GC-C-IRMS. The difference between δ15N values of glutamate (Glx) and phenylalanine (Phe) were found to differ significantly between woody and herbaceous plan...

journal_title：Phytochemistry

authors： Kendall IP,Woodward P,Clark JP,Styring AK,Hanna JV,Evershed RP

更新日期：2019-05-01 00:00:00

abstract：:Ten stigmastane-type steroids bearing unusual Δ28-24-hydroxy side chains, dictyopterisins A-J, including three pairs of C-24 epimers, dictyopterisins B/C, F/G, and I/J, were isolated from the brown alga Dictyopteris undulata Holmes, together with two previously reported analogues, (24S)- and (24R)-saringosterol. Their...

journal_title：Phytochemistry

authors： Feng MT,Wang T,Liu AH,Li J,Yao LG,Wang B,Guo YW,Mao SC

更新日期：2018-02-01 00:00:00

abstract：:The present article is the first comprehensive review on the chemical composition and pharmacological activities of the raw materials of Crocus species. In the present review, data on chemical constituents and pharmacological profile of Crocus sativus stigmas, as well as of other plant parts (perianth, stamens, leaves...

journal_title：Phytochemistry

authors： Mykhailenko O,Kovalyov V,Goryacha O,Ivanauskas L,Georgiyants V

更新日期：2019-06-01 00:00:00

abstract：:Camalexin (3-thiazol-2'-yl-indole) is the characteristic phytoalexin of Arabidopsis thaliana, which is induced by a great variety of plant pathogens. While particular pathogens, as well as a human tumour cell line, were growth inhibited by camalexin, some fungi show resistance due to active degradation. Camalexin orig...

journal_title：Phytochemistry

authors： Glawischnig E

更新日期：2007-02-01 00:00:00

abstract：:Chemical examination of the leaves of Styrax ferrugineus yielded 5-[3''-(beta-D-glucopyranosyloxy)propyl]-7-methoxy-2-(3',4'-dimethoxyphenyl) benzofuran, along with the known nor-lignans 5-(3''-hydroxypropyl)-7-methoxy-2-(3',4'-methylenedioxyphenyl) benzofuran, 5-(3''-hydroxypropyl)-7-methoxy-2-(3',4'-dimethoxyphenyl)...

journal_title：Phytochemistry

authors： Pauletti PM,Araújo AR,Young MC,Giesbrecht AM,Bolzani VD

更新日期：2000-11-01 00:00:00

abstract：:The chemical study on the heartwoods extract of Ventilago harmandiana (Rhamnaceae) resulted in the isolation of ten previously undescribed pyranonaphthoquinones (ventilanones A-J), an undescribed anthraquinone (ventilanone K), together with eight known anthraquinone derivatives. Their structures were elucidated by ext...

journal_title：Phytochemistry

authors： Panthong K,Hongthong S,Kuhakarn C,Piyachaturawat P,Suksen K,Panthong A,Chiranthanut N,Kongsaeree P,Prabpai S,Nuntasaen N,Reutrakul V

更新日期：2020-01-01 00:00:00