Abstract:
:From the ethanolic extract of the aerial parts of Centaurea scoparia four new sesquiterpene lactones, belonging to the guaiane class, were isolated and identified, together with a known germacranolide. The structures were elucidated by spectroscopic methods including one- and two-dimensional NMR studies. The relative configuration was deduced from the 2D NOESY spectra. CD spectroscopy of the chlorinated compounds was used for determination of their absolute configuration.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Youssef DTdoi
10.1016/s0031-9422(98)00257-xsubject
Has Abstractpub_date
1998-11-20 00:00:00pages
1733-1737issue
6eissn
0031-9422issn
1873-3700pii
S0031-9422(98)00257-Xjournal_volume
49pub_type
杂志文章相关文献
PHYTOCHEMISTRY文献大全abstract::Coumarins exhibit many biological activities and are the main specialised metabolites of Peucedanum praeruptorum Dunn, an important plant used in traditional Chinese medicine. In preliminary studies, we cloned several genes involved in coumarin biosynthesis in P. praeruptorum, such as 4-coumarate: CoA ligase (4CL), p-...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2018.11.006
更新日期:2019-02-01 00:00:00
abstract::A new anthraquinone glycoside, emodin-6-O-beta-D-glucopyranoside, and a new simple halogenated flavan-3-ol, 6-chlorocatechin, have been isolated from the roots of Rumex patientia L. together with seven known phenolic compounds. Their structures were elucidated on the basis of spectroscopic methods. Cytotoxic effects a...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(01)00337-5
更新日期:2001-12-01 00:00:00
abstract::Six bisdesmosidic triterpenoidal saponins, gleditsiosides H-K and gleditsia saponins C' and E', were isolated from the anomalous fruits of Gleditsia sinensis. Their structures were established by a combination of extensive NMR (DEPT, DQF-COSY, HETCOR, HOHAHA, HMBC and ROESY) studies and chemical degradation. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00238-1
更新日期:1999-10-01 00:00:00
abstract::Bioguided-fractionation of an acetone extract of the roots of Salvia cilicica (Lamiaceae) led to isolation of two new diterpenes, 7-hydroxy-12-methoxy-20-nor-abieta-1,5(10),7,9,12-pentaen-6,14-dione and abieta-8,12-dien-11,14-dione (12-deoxy-royleanone), together with oleanolic acid, ursolic acid, ferruginol, inuroyol...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00361-8
更新日期:2002-12-01 00:00:00
abstract::Society demands chemicals from sustainable sources. Identification of commercially important chemicals in crops increases value in biorefineries and reduces reliance on petrochemicals. Miscanthus sinensis and Miscanthus sacchariflorus are high-yielding distinct plants, which are sources of high-value chemicals and bio...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2013.04.004
更新日期:2013-08-01 00:00:00
abstract::One of the most well-characterised plant pathogenic interactions involves Arabidopsis thaliana and the bacteria Pseudomonas syringae pathovar tomato (Pst). The standard Pst inoculation procedure involves infiltration of large populations of bacteria into plant leaves which means that metabolite changes cannot be readi...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2010.01.006
更新日期:2010-04-01 00:00:00
abstract::A polynucleotide (or a fragment of RNA) was purified to apparent homogeneity by HPLC from mycelium of the wild strain 74A of the mould Neurospora crassa, after growth on sucrose and in the presence of saturating amounts of inorganic phosphate (Pi) for 72 hr at 30 degrees. The M(r) was ca 20,000 as determined by HPLC a...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(95)00531-5
更新日期:1996-02-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2017.09.006
更新日期:2017-12-01 00:00:00
abstract::The new concept that Na/K-ATPase acts as a receptor prompted us to look for new ligands from Callicarpa kwangtungensis Chun. Using column chromatography, an undescribed phenethyl alcohol glycoside, callicarpanoside A, and an undescribed benzyl alcohol glycoside, callicarpanoside B, along with twelve known polyphenols ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2020.112577
更新日期:2021-01-01 00:00:00
abstract::Bioassay guided fractionation of the lipophilic extract of the marine cyanobacterium Phormidium ectocarpi yielded a new natural product hierridin B and the previously described compound 2,4-dimethoxy-6-heptadecyl-phenol. Both structures were secured by extensive spectroscopic analysis (1D and 2D NMR, MS, GC-MS, IR). T...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(98)00440-3
更新日期:1998-12-01 00:00:00
abstract::Two novel styrl-pyrones, (+)-garvensintriol and (+)-etharvendiol, together with a known cytotoxic furano-furone, (+)-goniofufurone, have been isolated from the stem bark of Goniothalamus arvensis. A different relative configuration, cis-erythro-erythro for garvensintriol and cis-threo-erythro for etharvendiol, is esta...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(97)00770-x
更新日期:1998-04-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2015.05.011
更新日期:2015-08-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2012.08.004
更新日期:2012-12-01 00:00:00
abstract::Four cucurbitacins, bacobitacin A-D (1-4) as well as, a known cytotoxic, cucurbitacin E (5) together with three known phenylethanoid glycosides, monnieraside I, III and plantioside B were isolated form the aerial part of Bacopa monnieri. Their structures were elucidated on the basis of extensive spectroscopic investig...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.03.013
更新日期:2007-05-01 00:00:00
abstract::Coumarins and meroterpene from the fruits of Cullen corylifolium were evaluated for their ability to bind and activate human estrogen receptor α (hERα) by a combination of in vitro studies and molecular dynamics simulations. The recombinant hERα ligand binding domain (hERα-LBD) was produced in BL21 (DE3)pLysS and the ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2018.05.010
更新日期:2018-08-01 00:00:00
abstract::The Madagascar periwinkle produces a large palette of Monoterpenoid Indole Alkaloids (MIAs), a class of complex alkaloids including some of the most valuable plant natural products with precious therapeutical values. Evolutionary pressure on one of the hotspots of biodiversity has obviously turned this endemic Malagas...
journal_title:Phytochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.phytochem.2014.07.023
更新日期:2015-05-01 00:00:00
abstract::Two mulinane-type diterpenoids were isolated from Azorella compacta; namely 20-hydroxymulin-11,13-dienyl acetate and 13,14-dihydroxymulin-11-en-20-oic acid. The structures were elucidated by analysis of their spectroscopic data. These compounds, as well as three previously isolated diterpenes, were evaluated as potent...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.06.011
更新日期:2004-07-01 00:00:00
abstract::ent-19-Hydroxykaur-16-en-15-one is transformed to ent-3 beta,16 beta,19-trihydroxykauran-15-one by Cephalosporium aphidicola. The structure of this metabolite was established by X-ray crystallography. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(94)85065-8
更新日期:1994-09-01 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
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)00237-5
更新日期:2000-12-01 00:00:00
abstract::Twenty withanolides, including previously unknown nicanlodes A-M, were isolated from aerial parts of Nicandra physalodes. Their structural elucidations were unambiguously achieved through interpretation of extensive spectroscopic data (NMR and HRMS) and by comparison with literature data. Nicanlodes A and B have an un...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2017.02.009
更新日期:2017-05-01 00:00:00
abstract::Dietary intake of proanthocyanidins (PAs) has been largely unknown because of the lack of reliable values for their content in foods. Recent development of an analytical method for PAs has allowed the quantification of individual oligomers and polymers. This method has been employed to analyze food samples collected u...
journal_title:Phytochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.phytochem.2005.03.025
更新日期:2005-09-01 00:00:00
abstract::Two cell wall proteins from chickpea, known to be rapidly insolubilised by an elicitor-stimulated oxidative burst in-vivo, were purified from suspension cells. N-terminal protein sequencing revealed them as a proline-rich protein and an extensin-like protein. Oxidative cross-linking could be modelled in an in vitro sy...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00463-x
更新日期:2000-01-01 00:00:00
abstract::Two bitter stigmastane derivatives, vernoguinosterol (1) and vernoguinoside (2), have been isolated from the stem bark of Vernonia guineensis and their structures eludicated using spectroscopic methods. The new compounds exhibit trypanocidal activity. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(01)00448-4
更新日期:2002-02-01 00:00:00
abstract::Aconitum carmichaelii has long been used as a traditional Chinese medicine, and its processed lateral roots are known commonly as fuzi. Aconitine-type C19-diterpenoid alkaloids accumulating in the lateral roots are some of the main toxicants of this species, yet their biosynthesis remains largely unresolved. As a firs...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2018.04.022
更新日期:2018-08-01 00:00:00
abstract::In this study we were mirroring suggested in vivo phenomena of lignin-hemicellulose complex formation in vitro, by cross-linking Norway spruce (Picea abies) galactoglucomannans, xylans and lignin moieties to high molecular weight complexes by laccase treatment. We were able to observe the oxidation and cross-linking o...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2014.10.027
更新日期:2015-03-01 00:00:00
abstract::Two polyacetylene glycosides, lobetyol 9-O-glc(6)-(1)rha (pratialin-A) and lobetyol 9-O-glc(6)-(1)glc(6)-(1)glc (pratialin-B), were isolated from Pratia nummularia (Campanulaceae) callus and hairy root cultures and their chemical structures were determined by analysis of spectroscopic data. From the methanol extract o...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00669-6
更新日期:2003-02-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2006.05.011
更新日期:2006-07-01 00:00:00
abstract::The brown-rot fungus Gloeophyllum odoratum was collected from spruce stumps in southern Finland. The volatiles in the fruiting body and fungal cultures grown in malt extract and liquid medium were investigated. Chitin, chitosan and D-(+)-glucosamine at a concentration of 450 mgl-1 medium were used as elicitors. Chitos...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)90463-1
更新日期:1994-07-01 00:00:00
abstract::Cell-wall polysaccharides of bamboo shoots were extracted with chelating reagent (CDTA, trans-1,2-cyclohexanediamine-N,N,N',N'-tetraacetic acid), Na(2)CO(3) and KOH solutions. Glycosyl composition and glycosyl linkage analyses showed that the hemicellulose was composed of arabinoxylan, (1-->3, 1-->4)-beta-D-glucan, xy...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(98)00237-4
更新日期:1998-11-20 00:00:00
abstract::Lotus japonicus roots, cultured in a modified B5 medium, produced and secreted germination stimulants that induced Striga hermonthica seed germination. The germination-inducing activity was detected both in the roots and the culture filtrate. Following bioassay-guided purification procedures, an active compound was is...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.06.011
更新日期:2008-01-01 00:00:00