Biotic and abiotic degradation of Δ5-sterols in senescent Mediterranean marine and terrestrial angiosperms.

abstract：:The unusual chlorinated coumarinolignan, 5-chloropropacin, along with several other known compounds have been isolated from the roots of Mondia whitei. The structure of the chlorinated coumarinolignan was determined by NMR and mass spectroscopic analyses. ...

journal_title：Phytochemistry

authors： Patnam R,Kadali SS,Koumaglo KH,Roy R

更新日期：2005-03-01 00:00:00

abstract：:An invertase (beta-D-fructofuranoside fructohydrolase, EC 3.2.1.26) from Rhodotorula glutinis was purified by ammonium sulfate fractionation, gel filtration and anion exchange chromatography. Invertase molecular weight was estimated to be 100 kDa by analytical gel filtration and 47 kDa by sodium dodecyl sulfate-polyac...

journal_title：Phytochemistry

authors： Rubio MC,Runco R,Navarro AR

更新日期：2002-11-01 00:00:00

abstract：:Landraces of maize (Zea mays ssp. mays) and its wild teosinte relatives (Zea mays spp. parviglumis and mexicana) were surveyed for sensitivity to fumonisin B(1), a phytotoxin produced by the maize pathogen Gibberella moniliformis. Only two of 42 Z. mays samples were highly insensitive to FB(1) (ED(50) = ca. 200 microM...

journal_title：Phytochemistry

authors： Desjardins AE,Plattner RD,Stessman RJ,McCormick SP,Millard MJ

更新日期：2005-10-01 00:00:00

abstract：:Seven previously undescribed polyketides, namely childinins A-G, and one previously undescribed 8,14-seco-ergosterol, namely childinasterone A, were obtained from the fruiting bodies of Daldinia childiae. Their structures and absolute configurations were established via extensive spectroscopic analyses, single-crystal...

journal_title：Phytochemistry

authors： Zhao ZZ,Chen HP,Huang Y,Zhang SB,Li ZH,Feng T,Liu JK

更新日期：2017-10-01 00:00:00

abstract：:The essential oil of aerial parts of Capillipedium parviflorum (family Poaceae) was obtained by hydrodistillation in 0.4% yield on dry weight basis. The oil was analysed by capillary GC and GC-MS techniques. Two new compounds from plant source 4-nonanol 51.7% and 4-undecanone 23.5% predominated in the essential oil an...

journal_title：Phytochemistry

authors： Mahmood U,Kaul VK,Acharya R

更新日期：2004-07-01 00:00:00

abstract：:There are several factors thought to assist invasive weeds in colonization of ecosystems. One of these factors is allelopathy, the negative effect of chemicals produced by one plant on neighboring plants, frequently mediated through root exudates and other plant leachates. Acroptilon repens (Asteraceae) is one of the ...

journal_title：Phytochemistry

authors： Quintana N,Weir TL,Du J,Broeckling CD,Rieder JP,Stermitz FR,Paschke MW,Vivanco JM

更新日期：2008-10-01 00:00:00

abstract：:We investigated impacts of early and mild biotic stress on Biogenic Volatile Organic Compounds (BVOC) emissions from tomato in order to test their potential for early (biotic) stress detection. Tomato plants were exposed to two common fungal pathogens, Botrytis cinerea and Oidium neolycopesici and the sap-sucking aphi...

journal_title：Phytochemistry

authors： Kasal-Slavik T,Eschweiler J,Kleist E,Mumm R,Goldbach HE,Schouten A,Wildt J

更新日期：2017-12-01 00:00:00

abstract：:Incorporation of [1-13C]glucose indicates that the biosynthesis of the hemiterpene moiety of glabrol, the main prenylated flavanone in the hairy root cultures of Glycyrrhiza glabra, proceeds via a glyceraldehyde/pyruvate non-mevalonate pathway. ...

journal_title：Phytochemistry

authors： Asada Y,Li W,Yoshikawa T

更新日期：2000-10-01 00:00:00

abstract：:The lipid extract of the temperate red alga Rhodymenia pertusa has yielded four eicosanoid metabolites, three of which are new natural products. Using principally NMR and MS techniques, their structures were deduced as 5R,6S-dihydroxy-7(E),9(E),11(Z),14(Z)-eicosatetraenoic acid (5R,6S-diHETE), 5R*,6S*-dihydroxy-7(E),9...

journal_title：Phytochemistry

authors： Jiang ZD,Ketchum SO,Gerwick WH

更新日期：2000-01-01 00:00:00

abstract：:The kaempferol derivative 3,7-di-O-methyl-4'-O-beta-[alpha rhamnosyl (1 --> 6)]-glucopyranoside (siparunoside) was isolated from the leaves of Sparuna apiosyce. Its structure was established by extensive NMR studies. The alkaloids reticuline and liriodenine were also isolated from the leaves along with the kaempferol ...

journal_title：Phytochemistry

authors： Leitão GG,Soares SS,Brito TD,Delle Monache F

更新日期：2000-11-01 00:00:00

abstract：:Two natural Diels-Alder type adducts, cathayanon A (1) and cathayanon B (2), resembling sanggenon C (4) and O (3), were isolated from the root bark of Morus cathayana. Their structures were elucidated on the basis of spectroscopic evidence. The structure of 1 was confirmed by the results of X-ray crystallographic anal...

journal_title：Phytochemistry

authors： Shen RC,Lin M

更新日期：2001-08-01 00:00:00

abstract：:Smoke derived karrikinolide and trimethylbutenolide exerted neuroprotective effects against monoamine oxidase and acetylcholinesterase. Synthesis of potent analogs was achieved. Sulphur substitution in the bicyclic ring structure of KAR1 displayed the most encouraging activity returning IC50 values of 13.75 ± 0.001 μM...

journal_title：Phytochemistry

authors： Naidoo D,Pošta M,Roy A,Kulkarni M,Van Staden J

更新日期：2019-07-01 00:00:00

abstract：:Vanillin (4-hydroxy-3-methoxybenzaldehyde) is an important flavour and aroma molecule, but is also of interest because of its biogenetic relationship to the phenylpropanoid pathway and to other molecules of physiological significance, notably salicylate. Recent progress towards characterisation of the biosynthesis of ...

journal_title：Phytochemistry

authors： Walton NJ,Mayer MJ,Narbad A

更新日期：2003-07-01 00:00:00

abstract：:During the past 50 years there have been tremendous advances in chemical and biological techniques of analysis that have transformed research in pharmacognosy. The PSE has regularly held symposia of relevance to pharmacognosy and some of these are briefly reviewed in the area of natural products from higher plants. Th...

journal_title：Phytochemistry

authors： Phillipson JD

更新日期：2007-11-01 00:00:00

abstract：:[(3)H](+)-delta-Cadinene and its 8-hydroxy derivative, prepared from (1RS)-[1-(3)H]FPP by the action of one and two recombinant enzymes, respectively, were infiltrated into cotyledons of bacterial blight-resistant cotton plants as they biosynthesized sesquiterpene phytoalexins in response to infection by Xanthomonas c...

journal_title：Phytochemistry

authors： Wang YH,Davila-Huerta G,Essenberg M

更新日期：2003-09-01 00:00:00

abstract：:The leaf essential oils of Cistus monspeliensis plants growing wild on calcareous and siliceous soils in Provence (South of France) were analysed by GC and GC-MS. Qualitative and quantitative differences are noted in the essential oil composition between the Cistus populations from the two soil types. For chemotaxonom...

journal_title：Phytochemistry

authors： Robles C,Garzino S

更新日期：2000-01-01 00:00:00

abstract：:Seven sesquiterpene lactones, 8-O-methacryloylelephanpane, 2,4-bis-O-methyl-8-O-methacryloylelephanpane, 4-O-ethyl-8-O-methacryloylelephanpane, 8-O-methacryloylisoelephanpane, 2-O-demethyltomenphantopin C, molephantin A, molephantin B, along with ten known ones, were isolated from Elephantopus mollis (Asteraceae). The...

journal_title：Phytochemistry

authors： Wu ZN,Zhang YB,Chen NH,Li MJ,Li MM,Tang W,Zhuang L,Li YL,Wang GC

更新日期：2017-05-01 00:00:00

abstract：:The major vacuolar flavonoid of a greenhouse-grown plant of Becium grandiflorum has been identified as the 8-O-glucoside of isothymusin (5,8,4'-trihydroxy-6,7-dimethoxyflavone), while the major external flavonoids in the diethyl ether surface wash of the same plant are found to be isothymusin and cirsimaritin (5,4'-di...

journal_title：Phytochemistry

authors： Grayer RJ,Veitch NC

更新日期：1998-03-01 00:00:00

abstract：:The multitude of terpene carbon skeletons in plants is formed by enzymes known as terpene synthases. This review covers the monoterpene and sesquiterpene synthases presenting an up-to-date list of enzymes reported and evidence for their ability to form multiple products. The reaction mechanisms of these enzyme classes...

journal_title：Phytochemistry

authors： Degenhardt J,Köllner TG,Gershenzon J

更新日期：2009-10-01 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：:Six compounds from the aerial parts of the Argentinean plant Hymenoxys robusta (Rusby) Parker were isolated and their structures elucidated using extensive spectroscopic analyses. These compounds comprise two inositol derivatives and four 3,4-seco-pseudoguaianolides, including vermeerin. Bioactivity assays of these co...

journal_title：Phytochemistry

authors： Fortuna AM,Juárez ZN,Bach H,Nematallah A,Av-Gay Y,Sánchez-Arreola E,Catalán CA,Turbay S,Hernández LR

更新日期：2011-12-01 00:00:00

abstract：:Thirteen Psychotria alkaloids were evaluated regarding their interactions with acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and monoamine oxidases A and B (MAO-A and MAO-B), which are enzymatic targets related with neurodegenerative diseases. Two quaternary β-carboline alkaloids, prunifoleine and 14-oxop...

journal_title：Phytochemistry

authors： Passos CS,Simões-Pires CA,Nurisso A,Soldi TC,Kato L,de Oliveira CM,de Faria EO,Marcourt L,Gottfried C,Carrupt PA,Henriques AT

更新日期：2013-02-01 00:00:00

abstract：:Flavonoids in the petals of several C. ternatea lines with different petal colors were investigated with LC/MS/MS. Delphinidin 3-O-(2"-O-alpha-rhamnosyl-6"-O-malonyl)-beta-glucoside was newly isolated from the petals of a mauve line (wm) together with three known anthocyanins. They were identified structurally using U...

journal_title：Phytochemistry

authors： Kazuma K,Noda N,Suzuki M

更新日期：2003-11-01 00:00:00

abstract：:In addition to Z-coniferyl and Z-sinapyl alcohols, bark extracts of Fagus grandifolia also contain significant amounts of the glucosides, Z-coniferin, Z-isoconiferin (previously called faguside) and Z-syringin. The corresponding E-isomers of these glucosides do not accumulate to a detectable level. The accumulation ...

journal_title：Phytochemistry

authors： Lewis NG,Inciong EJ,Ohashi H,Towers GH,Yamamoto E

更新日期：1988-01-01 00:00:00

abstract：:Biotransformation of 20(S)-protopanaxatriol (1) by the fungus Mucor spinosus AS 3.3450 gave 10 metabolites (2-10), of which 2-5 were previously known. On the basis of NMR and MS analyses, structures 6-10 were established as 12-oxo-23beta-hydroxyl-20(S)-protopanaxatriol (6), 20S,24R-epoxy-dammaran-3beta,6alpha,25-triol...

journal_title：Phytochemistry

authors： Zhang J,Guo H,Tian Y,Liu P,Li N,Zhou J,Guo D

更新日期：2007-10-01 00:00:00

abstract：:Destruxins, secondary metabolites first reported in 1961, are cyclic hexadepsipeptides composed of an alpha-hydroxy acid and five amino acid residues. The name "destruxin" is derived from "destructor" from the species Oospora destructor, the entomopathogenic fungus from which these metabolites were first isolated. Ind...

journal_title：Phytochemistry

authors： Pedras MS,Irina Zaharia L,Ward DE

更新日期：2002-03-01 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

abstract：:The accumulation of soluble and wall-bound phenolics and phenolic polymers in Musa acuminata roots exposed to cell wall-derived elicitor from the pathogen, Fusarium oxysporum, f.sp. cubense, race four, was investigated. The root tissue from the banana cultivar "Goldfinger" was found to respond strongly and rapidly tow...

journal_title：Phytochemistry

authors： de Ascensao AR,Dubery IA

更新日期：2003-07-01 00:00:00

abstract：:Sugarcane neutral invertase (SNI) has been partially purified from mature sugarcane stem tissue to remove any potential competing activity. The enzyme is non-glycosylated and exhibits catalytic activity as a monomer, dimer and tetramer, most of the activity elutes as a monomer of native M(r) ca 60 k. The enzyme displa...

journal_title：Phytochemistry

authors： Vorster DJ,Botha FC

更新日期：1998-10-01 00:00:00

abstract：:2,5-Dimethyl-4-hydroxy-3[2H]-furanone 6'-O-malonyl-beta-D-glucopyranoside was isolated from a glycosidic extract of strawberry fruit (Fragaria x ananassa, cv. Senga Sengana) by means of countercurrent chromatography and reverse-phase HPLC. Identification was achieved by comparison of chromatographic and 1H, 13C and 2D...

journal_title：Phytochemistry

authors： Roscher R,Herderich M,Steffen JP,Schreier P,Schwab W

更新日期：1996-09-01 00:00:00