Glucose-conjugation of the flavones of Psiadia arabica by Cunninghamella elegans.

abstract：:A structure-activity relationships study was conducted assaying 15 natural analogues and derivatives belonging to two groups of organic compounds, nonenolides and cytochalasins, for their toxicity against the composite perennial weeds Cirsium arvense and Sonchus arvensis occurring through the temperate region of world...

journal_title：Phytochemistry

authors： Berestetskiy A,Dmitriev A,Mitina G,Lisker I,Andolfi A,Evidente A

更新日期：2008-02-01 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：:From leaves of Psychotria leiocarpa, an indole alkaloid was isolated to which the structure N,beta-D-glucopyranosyl vincosamide (1) was assigned. This represents the first report of an N-glycosylated monoterpenoid indole alkaloid. In field-grown plants highest amounts of 1 were found in the leaves (2.5% of dry wt) and...

journal_title：Phytochemistry

authors： Henriques AT,Lopes SO,Paranhos JT,Gregianini TS,Von Poser GL,Fett-Neto AG,Schripsema J

更新日期：2004-02-01 00:00:00

abstract：:A series of prenylated flavonoids was obtained from antigenotoxic extracts and fractions of stem bark of Erythrina latissima E. Mey (Leguminosae). In addition to five constituents never reported before, i.e. (2S)-5,7-dihydroxy-2-(4-hydroxy-2-(prop-1-en-2-yl)-2,3-dihydrobenzofuran-6-yl)chroman-4-one (erylatissin D), (2...

journal_title：Phytochemistry

authors： Zarev Y,Foubert K,Lucia de Almeida V,Anthonissen R,Elgorashi E,Apers S,Ionkova I,Verschaeve L,Pieters L

更新日期：2017-09-01 00:00:00

abstract：:The paper describes the amino acid sequence of a 26 kDa basic subunit of 13S globulin of common buckwheat (Fagopyrum esculentum Moench). The protein has 93 and 75% sequence homology with 11S globulin of Coffea arabica and beta subunit of 11S globulin of Cucurbita pepo respectively. The subunit has the "globally conser...

journal_title：Phytochemistry

authors： Bharali S,Chrungoo NK

更新日期：2003-05-01 00:00:00

abstract：:Red beet (Beta vulgaris L.) tonoplast membrane vesicles and [14C]trans-cinnamic acid-glutatione were used to study the vacuolar transport of phynylpropanoid-glutathione conjugates which are formed in peroxidase-mediated reactions. It was determined that the uptake of [14C]trans-cinnamic acid-glutathione into the tonop...

journal_title：Phytochemistry

authors： Walczak HA,Dean JV

更新日期：2000-02-01 00:00:00

abstract：:Phospholipase D (PLD; E.C. 3.1.4.4) is widespread in plants where it fulfills diverse functions in growth and in the response to stresses. The enzyme occurs in multiple forms that differ in their biochemical properties. In the present paper PLD from medicinally relevant Indian mustard seeds was purified by Ca(2+)-medi...

journal_title：Phytochemistry

authors： Khatoon H,Mansfeld J,Schierhorn A,Ulbrich-Hofmann R

更新日期：2015-09-01 00:00:00

abstract：:The enzymatic glucose cleavage of palicoside revealed the biosynthetic pathway to akagerine, whereas the conversion of dolichantoside led to a new quaternary heteroyohimbine alkaloid named N(b)-methyl-21-beta-hydroxy-mayumbine. The hypothetical models of reactions occurring after the conversion of both substrates are ...

journal_title：Phytochemistry

authors： Brandt V,Tits M,Penelle J,Frédérich M,Angenot L

更新日期：2001-07-01 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：:Putrescine N-methyltransferase (PMT) catalyses S-adenosylmethionine (SAM) dependent methylation of the diamine putrescine. The product N-methylputrescine is the first specific metabolite on the route to nicotine, tropane, and nortropane alkaloids. PMT cDNA sequences were cloned from tobacco species and other Solanacea...

journal_title：Phytochemistry

authors： Biastoff S,Brandt W,Dräger B

更新日期：2009-10-01 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 13-membered N-formylcyclopeptide alkaloid, nummularine-T, has been isolated from the bark of Zizyphus nummularia and its structure established by spectroscopic and chemical methods. It provides the fourth example of a naturally occurring N-formyl cyclopeptide alkaloid. ...

journal_title：Phytochemistry

authors： Singh B,Pandey VB

更新日期：1995-01-01 00:00:00

abstract：:The widespread secondary metabolite usnic acid, a dibenzofuran derivative, is the principal acetone-soluble compound in the lichen Flavocetraria nivalis. Seasonal variation in concentrations were studied in four populations of this lichen, three from Arctic-alpine habitats in the Northern Hemisphere, and one from Pata...

journal_title：Phytochemistry

authors： Bjerke JW,Elvebakk A,Domínguez E,Dahlback A

更新日期：2005-02-01 00:00:00

abstract：:Sixteen previously undescribed lanostane-type triterpenoids (1-16), together with fourteen known compounds, were isolated from cultivated fruiting bodies of the basidiomycete Ganoderma casuarinicola, a recently described species. The structures were elucidated on the basis of NMR spectroscopic and mass spectrometry da...

journal_title：Phytochemistry

authors： Isaka M,Chinthanom P,Rachtawee P,Choowong W,Choeyklin R,Thummarukcharoen T

更新日期：2020-02-01 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：:Seven pairs of undescribed enantiomeric bis-coumarins, (±)-dievodialetins A-G, were separated from the roots of Evodia lepta Merr. Two coumarin nuclei were linked via a 1,4-dimethyl4-vinylcyclohexene moiety in (±)-dievodialetins C-G. The structures of the undescribed compounds, including their absolute configurations ...

journal_title：Phytochemistry

authors： Huang GY,Cui H,Lu XY,Zhang LD,Ding XY,Wu JJ,Duan LX,Zhang SJ,Liu Z,Zhang RR

更新日期：2021-02-01 00:00:00

abstract：:The bulbs of Ledebouria socialis (Hyacinthaceae) yielded the benzocyclobutene homoisoflavonoid, (R)-2',5-dihydroxy-3',4',7-trimethoxyspiro{2H-1-benzopyran-3-(4H)-9-bicyclo[4.2.0]octa[1,3,5]triene}-4-one, socialinone (1). Ledebouria ovatifolia yielded (2ε,3R)-2,5-dihydroxy-7-methoxyspiro[2H-1-benzopyran-3(4H), 5'(6'H)-...

journal_title：Phytochemistry

authors： Waller CP,Thumser AE,Langat MK,Crouch NR,Mulholland DA

更新日期：2013-11-01 00:00:00

abstract：:The work herein presents comprehensive analyses of the cuticular wax mixtures covering the flag leaf blade and peduncle of bread wheat (Triticum aestivum) cv. Bethlehem. Overall, Gas Chromatography-Mass Spectrometry and Flame Ionization Detection revealed a wax coverage of flag leaf blades (16 μg/cm(2)) a third that o...

journal_title：Phytochemistry

authors： Racovita RC,Hen-Avivi S,Fernandez-Moreno JP,Granell A,Aharoni A,Jetter R

更新日期：2016-10-01 00:00:00

abstract：:The qualitative and quantitative compositions of leaf cuticular waxes from potato (Solanum tuberosum) varieties were studied. The principal components of the waxes were very long chain n-alkanes, 2-methylalkanes and 3-methylalkanes (3.1-4.6 microg cm(-2)), primary alcohols (0.3-0.7 microg cm(-2)), fatty acids (0.3-0.6...

journal_title：Phytochemistry

authors： Szafranek BM,Synak EE

更新日期：2006-01-01 00:00:00

abstract：:Two forms of the pacA-encoded acid phosphatase (designated acid phosphatases I and II) secreted by the mold Aspergillus nidulans grown in low-Pi medium at 37 degrees, pH5.0, were purified to apparent homogeneity by PAGE. The M(r) of the purified enzyme forms were ca 115000 (60000) and 113000 (62000) respectively for f...

journal_title：Phytochemistry

authors： Nozawa SR,MacCheroni W Jr,Stábeli RG,Thedei G Jr,Rossi A

更新日期：1998-11-20 00:00:00

abstract：:Contemporary glycobiology reflects the intense interest in glycoproteins and their biological roles. Addition of saccharides by N- or O-glycosylation is precise rather than random and forms a uniquely interactive molecular surface. We designate these well conserved glycomotifs as glycomodules to emphasize their functi...

journal_title：Phytochemistry

authors： Kieliszewski MJ

更新日期：2001-06-01 00:00:00

abstract：:The major component (35-65%) of the volatile oil obtained by steam distillation of the leaves of Melaleuca triumphalis has been identified as (rel)-1beta-pentyl-1alpha,6alpha-dihydroxy-3,3,5,5-tetramethylcyclohexa-2,4-dione (trivial name triumphalone). Relative stereochemistry was established by nuclear Overhauser exp...

journal_title：Phytochemistry

authors： Brophy JJ,Craig DC,Goldsack RJ,Fookes CJ,Leach DN,Waterman PG

更新日期：2006-09-01 00:00:00

abstract：:The dichloromethane extract of the stem bark of Warburgia ugandensis afforded three new coloratane sesquiterpenes, namely: 6alpha,9alpha-dihydroxy-4(13),7-coloratadien-11,12-dial (1), 4(13),7-coloratadien-12,11-olide (2), and 7beta-hydroxy-4(13),8-coloratadien-11,12-olide (3), together with nine known sesquiterpenes, ...

journal_title：Phytochemistry

authors： Wube AA,Bucar F,Gibbons S,Asres K

更新日期：2005-10-01 00:00:00

abstract：:The interest in the potential health effects of dietary phytoestrogens has increased with the findings that hormone replacement therapy is not as safe or effective as previously thought. This review summarizes the dietary sources of the phytoestrogens; isoflavonoids, stilbenes, coumestans and lignans. It also examines...

journal_title：Phytochemistry

authors： Cornwell T,Cohick W,Raskin I

更新日期：2004-04-01 00:00:00

abstract：:To search for bioactive gypenosides and their analogues, a saponin enriched fraction and its hydrolyzate from Gynostemma pentaphyllum were phytochemically investigated. Fractionation by diverse chromatographic methods, including HPLC, Sephadex LH-20, silica gel, and C18 reverse phase silica gel, led to the isolation a...

journal_title：Phytochemistry

authors： Wang J,Ha TKQ,Shi YP,Oh WK,Yang JL

更新日期：2018-11-01 00:00:00

abstract：:Black aspergilli are distributed worldwide and represent one of the most prolific sources of metabolites with biomedical and agrochemical interests. However, due to their similar morphological characteristics and insufficient molecular identification, the taxonomic classification of black aspergilli remains ill-define...

journal_title：Phytochemistry

authors： Xu C,Xu K,Yuan XL,Ren GW,Wang XQ,Li W,Deng N,Wang XF,Zhang P

更新日期：2020-08-01 00:00:00

abstract：:In order to determine how plant uptake of a sulfur-rich secondary metabolite, sinalbin, affects the metabolic profile of sulfur-deficient plants, gas chromatography time-of-flight mass spectrometry (GC-TOF-MS), in combination with liquid chromatography-mass spectrometry (LC-MS), was used to survey the metabolome of Ar...

journal_title：Phytochemistry

authors： Zhang J,Sun X,Zhang Z,Ni Y,Zhang Q,Liang X,Xiao H,Chen J,Tokuhisa JG

更新日期：2011-10-01 00:00:00

abstract：:Natural compounds offer interesting pharmacological perspectives for antiviral drug development with regard to broad-spectrum antiviral properties and novel modes of action. In this study, we have analyzed polysaccharide fractions isolated from Grateloupia indica. The crude water extract (GiWE) as well as one fraction...

journal_title：Phytochemistry

authors： Chattopadhyay K,Mateu CG,Mandal P,Pujol CA,Damonte EB,Ray B

更新日期：2007-05-01 00:00:00

abstract：:Despite evidence that lignin associates under both aqueous and organic media, the magnitude and nature of the underlying driving forces are still a matter of discussion. The present paper addresses this issue by examining both solution properties and size exclusion behaviour of lignins isolated from five different spe...

journal_title：Phytochemistry

authors： Guerra A,Gaspar AR,Contreras S,Lucia LA,Crestini C,Argyropoulos DS

更新日期：2007-10-01 00:00:00

abstract：:Two novel anthocyanins, delphinidin 3-O-(6-O-cis-p-coumaroyl-beta-D-glucoside)-5-O-(6-O-malonyl-beta-D -glucoside) and petunidin 3-O-(6-O-trans-p-coumaroyl-beta-D-glucoside)-5-O-(6-O-malonyl-beta -D-glucoside) , were isolated from the blue flowers of Hyacinthus orientalis cv. Delft Blue. Five known acylated anthocyani...

journal_title：Phytochemistry

authors： Hosokawa K,Fukunaga Y,Fukushi E,Kawabata J

更新日期：1995-03-01 00:00:00