Iridoid glycosides from Gmelina philippensis.

abstract：:Bispecific O-methyltransferase (OMT, EC 2.1.1.68) which catalyses the meta-specific methylation of caffeic acid and 5-hydroxyferulic acid was purified to homogeneity from the developing secondary xylem of aspen (Populus tremuloides). The enzyme was purified by conventional techniques and affinity chromatography on S-a...

journal_title：Phytochemistry

authors： Bugos RC,Chiang VL,Campbell WH

更新日期：1992-05-01 00:00:00

abstract：:A pyrroloisoquinoline alkaloid, 2,3-dimethoxy-6-(3-oxo-butyl)-7,9,10,11,11a,12-hexahydrobenzo[f]pyrrolo[1,2-b]isoquinoline (1), whose structure was determined by spectroscopic methods, was isolated from the aerial parts of Cynanchum komarovii, together with two known alkaloids, 7-demethoxytylophorine (2) and 7-demetho...

journal_title：Phytochemistry

authors： An T,Huang RQ,Yang Z,Zhang DK,Li GR,Yao YC,Gao J

更新日期：2001-12-01 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：:Seed oil from castor bean (Ricinus communis) contains high amounts of hydroxy fatty acid rich triacylglycerols (TAGs) that can serve as raw material for production of bio-based products such as nylon, cosmetics, lubricants, foams, and surfactants. Diacylglycerol acyltransferase (DGAT) catalyses the terminal reaction i...

journal_title：Phytochemistry

authors： Kroon JT,Wei W,Simon WJ,Slabas AR

更新日期：2006-12-01 00:00:00

abstract：:Herbivory and wounding upregulate a large suite of defense genes in hybrid poplar leaves. A strongly wound- and herbivore-induced gene with high similarity to Arabidopsis vegetative storage proteins (VSPs) and acid phosphatase (AP) was identified among genes strongly expressed during the poplar herbivore defense respo...

journal_title：Phytochemistry

authors： Veljanovski V,Major IT,Patton JJ,Bol E,Louvet S,Hawkins BJ,Constabel CP

更新日期：2010-04-01 00:00:00

abstract：:Nine pregnane glycosides containing peroxy functions in their sugar moieties (1-5 and 11-14), five oligosaccharides (6-10), six pregnane glycosides (15-20), and five cardiac glycosides (21-25) were isolated from the root barks of Periploca sepium Bge. (Asclepiadaceae) and the roots of Periploca forrestii Schltr. (Ascl...

journal_title：Phytochemistry

authors： Feng J,Zhang R,Zhou Y,Chen Z,Tang W,Liu Q,Zuo JP,Zhao W

更新日期：2008-11-01 00:00:00

abstract：:Alkaline nitrobenzene oxidation, ozonation and methoxyl content determinations were applied to decomposing leaf litter of Ginkgo biloba L., Cinnamomum camphora sieb., Zelkova serrata Makino and Firmiana simplex W. F. Wight, respectively, during mulching to investigate the properties and estimate changes in lignin comp...

journal_title：Phytochemistry

authors： Jin Z,Akiyama T,Chung BY,Matsumoto Y,Iiyama K,Watanabe S

更新日期：2003-11-01 00:00:00

abstract：:Eight pairs of meroterpenoid enantiomers and four achiral meroterpenoids were isolated from Rhododendron anthopogonoides Maxim. Seventeen of them, named (+)-/(-)-anthoponoids A-G, (+)-daurichromene D, and anthoponoids H and I, are undescribed compounds with structural diversity. Their structures were characterized her...

journal_title：Phytochemistry

authors： Shi Q,Li TT,Wu YM,Sun XY,Lei C,Li JY,Hou AJ

更新日期：2020-12-01 00:00:00

abstract：:Two aristololactams, aristololactam GI (1) and aristololactam GII (2), and three aporphines, fissistigamide A (3), fissistigamide B (4) and fissistigmine (5), together with nineteen known alkaloids, one flavone and one anthraquinone were isolated from the ethanol extracts of the stems of Fissistigma oldhamii (Annonace...

journal_title：Phytochemistry

authors： Ge YW,Zhu S,Shang MY,Zang XY,Wang X,Bai YJ,Li L,Komatsu K,Cai SQ

更新日期：2013-02-01 00:00:00

abstract：:During the past two decades the study of the Myristicaceae species has increased, and many flavonoids of different types have been isolated. This review discusses the flavonoids presently known in the Myristicaceae. ...

journal_title：Phytochemistry

authors： Valderrama JC

更新日期：2000-11-01 00:00:00

abstract：:Phospholipase D (PLD) catalyzes the hydrolysis and transesterification of glycerophospholipids at the terminal phosphodiester bond. In many plants, several isoforms of PLD have been identified without knowing their functional differences. In this paper, the specificities of two PLD isoenzymes from white cabbage (Brass...

journal_title：Phytochemistry

authors： Dippe M,Ulbrich-Hofmann R

更新日期：2009-02-01 00:00:00

abstract：:The role played by molecules of the strigolactone family in stimulating the germination of seeds of parasitic weeds of the genera Striga, Orobanche and Alectra has never been clearly elucidated. The biogenesis of these unusual terpenoid lactones, originally identified in minute quantities in the root exudates of a sma...

journal_title：Phytochemistry

authors： Humphrey AJ,Beale MH

更新日期：2006-04-01 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：:Monoterpenoid indole alkaloids are a vast and structurally complex group of plant secondary compounds. In contrast to other groups of plant products which produce many glycosides, indole alkaloids rarely occur as glucosides. Plants of Rauvolfia serpentina accumulate ajmaline as a major alkaloid, whereas cell suspensio...

journal_title：Phytochemistry

authors： Warzecha H,Gerasimenko I,Kutchan TM,Stöckigt J

更新日期：2000-08-01 00:00:00

abstract：:Four dimeric chalcone derivatives, 8″,9″-dihydrowelwitschin H, uvarins A-C, a naphthalene derivative, 2-hydroxy-3-methoxy-6-(4'- hydroxyphenyl)naphthalene, and the known dimeric chalcones, dependensin and welwitschin E, flavonoids, a cyclohexane oxide derivative, an aromatic aldehyde were isolated from the roots of Uv...

journal_title：Phytochemistry

authors： Salae AW,Chairerk O,Sukkoet P,Chairat T,Prawat U,Tuntiwachwuttikul P,Chalermglin P,Ruchirawat S

更新日期：2017-03-01 00:00:00

abstract：:The distribution and biosynthesis of iridoid glucosides in the Oleaceae is reviewed and five distinct biosynthetic pathways to iridoids have been identified in the family, deoxyloganic acid apparently being a common intermediate. Likewise, the distributions of caffeoyl phenylethanoid glycosides (CPGs), i.e. verbascosi...

journal_title：Phytochemistry

authors： Jensen SR,Franzyk H,Wallander E

更新日期：2002-06-01 00:00:00

abstract：:C6-aldehydes, such as (Z)-3-hexenal, (E)-2-hexenal, and n-hexanal, are volatile compounds formed by hydroperoxide lyase (HPL) and found in most terrestrial plants. They are fungicidal and bactericidal compounds, and are also signaling compounds to induce defense responses in plants. Transgenic plants having overexpres...

journal_title：Phytochemistry

authors： Kishimoto K,Matsui K,Ozawa R,Takabayashi J

更新日期：2008-08-01 00:00:00

abstract：:The dichloromethane extract from leaves of Juniperus brevifolia, through chromatographic fractionations yield six compounds: 3beta-hydroxy-abieta-8,11,13-trien-7-one, 18-hydroxy-sandaracopimara-8(14),15-dien-7-one, sandaracopimara-8(14),15-dien-18-yl formate; and the first examples of sandaracopimaranes and abieta-8,1...

journal_title：Phytochemistry

authors： Seca AM,Silva AM,Bazzocchi IL,Jimenez IA

更新日期：2008-01-01 00:00:00

abstract：:Recognition between mating partners, early sexual morphogenesis and development are regulated by a family of beta-carotene derived signal compounds, the trisporoids, in zygomycete fungi. Mating type-specific precursors are released from the hyphae and exert their physiological effects upon compatible mating partners. ...

journal_title：Phytochemistry

authors： Schimek C,Wöstemeyer J

更新日期：2009-10-01 00:00:00

abstract：:Although it is well known that solar ultraviolet B (UV-B) radiation enhances plant defenses, there is less knowledge about traits that define insect resistance in field-grown soybean. Here we study the effects of solar UV-B radiation on: a) the induction of phenolic compounds and trypsin proteinase inhibitors (TPI) in...

journal_title：Phytochemistry

authors： Dillon FM,Chludil HD,Zavala JA

更新日期：2017-09-01 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：:Eight compounds, nagilactone C 7-O-α-L-arabinopyranosyl-(1→4)-β-D-xylopyranoside, nagilactone C 7-O-β-D-glucopyranosyl-(1→4)-β-D-xylopyranoside, nagilactone C 7-O-β-D-xylopyranoside, nagilactone A 7-O-α-L-arabinopyranosyl-(1→4)-β-D-xylopyranoside, 2β,15S,16,17,19-pentahydroxy-isopimar-8(14)-ene 17-O-β-D-glucopyranosid...

journal_title：Phytochemistry

authors： Faiella L,Temraz A,De Tommasi N,Braca A

更新日期：2012-04-01 00:00:00

abstract：:From the rootstock of Scabiosa columbria L. loganin and sweroside were isolated. Sweroside showed moderate antibacterial activity. Pure sweroside was converted to the sweroside aglycone 1-acetoxy derivative (DABCO/Ac2O) after hydrolysis of the glucose unit. X-ray crystallography of the monoacetate showed unambiguously...

journal_title：Phytochemistry

authors： Horn MM,Drewes SE,Brown NJ,Munro OQ,Meyer JJ,Mathekga AD

更新日期：2001-05-01 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：:Two bromophenols, together with three known compounds, were isolated from the methanolic extract of the marine alga, Rhodomela confervoides. By means of MS and NMR spectroscopic analyses, they were identified as 3-bromo-4-[2,3-dibromo-4,5-dihydroxyphenyl] methyl-5-(hydroxymethyl) 1,2-benzenediol (1) and 3-bromo-4-[2,3...

journal_title：Phytochemistry

authors： Xu N,Fan X,Yan X,Li X,Niu R,Tseng CK

更新日期：2003-04-01 00:00:00

abstract：:Four steroidal glycosides, named abutilosides L, M and N, these being 22S,25S-epoxy-furost-5-ene type glycosides, and abutiloside O, a 20-22 seco-type steroidal glycoside, were isolated from the fresh fruits of Solanum abutiloides. Their structures were determined by 2D NMR spectroscopic analysis and chemical evidence...

journal_title：Phytochemistry

authors： Yoshimitsu H,Nishida M,Nohara T

更新日期：2003-12-01 00:00:00

abstract：:Three C-17 diacetylenic compounds (1-3), one monoterpenoid (4), seven ceramides (leucoceramides A-G, 5a-g), six cerebrosides (leucocerebrosides A-F, 6a-f) and nine known compounds were isolated from the methanolic extract of Hydrocotyle leucocephala. Their structures were established by spectroscopic methods. The isol...

journal_title：Phytochemistry

authors： Ramos F,Takaishi Y,Kawazoe K,Osorio C,Duque C,Acuña R,Fujimoto Y,Sato M,Okamoto M,Oshikawa T,Ahmed SU

更新日期：2006-06-01 00:00:00

abstract：:Valerophenone synthase (VPS) is a polyketide synthase that catalyzes the formation of the phloroglucinol derivatives in the synthesis of the bitter acids in hop (Humulus lupulus). The reaction uses isovaleryl-CoA or isobutyryl-CoA, but otherwise it is identical to that of the chalcone synthase in flavonoid biosynthesi...

journal_title：Phytochemistry

authors： Zuurbier KW,Leser J,Berger T,Hofte AJ,Schröder G,Verpoorte R,Schröder J

更新日期：1998-12-01 00:00:00

abstract：:The essential oils isolated from leaves of ten and from unripe berries of eight populations of Laurus azorica (Seub.) Franco, collected on five islands of the Azorean archipelago, were analysed by GC and GC-MS. All oil samples were dominated by their monoterpene fraction (60-94%), alpha-pinene (15-37%) and 1,8-cineole...

journal_title：Phytochemistry

authors： Pedro LG,Santos PA,da Silva JA,Figueiredo AC,Barroso JG,Deans SG,Looman A,Scheffer JJ

更新日期：2001-05-01 00:00:00

abstract：:A new triterpenoid saponin, 3-O-[beta-D-glucopyranosyl(1----4)-beta-D- xylopyranosyl]-28-O-beta-D-glucopyranosyl-30-methyloleanate-9(11), 12-dien- 2,3,23-trihydroxyl-28-oic acid, was isolated from the roots of Phytolacca esculenta. The structure was assigned by chemical methods and spectral analysis (1H, 13C, DEPT NMR...

journal_title：Phytochemistry

authors： Yi YH

更新日期：1992-07-01 00:00:00