Abstract:
:Tetraoxygenated xanthones, cowaxanthones A-E, together with 10 previously reported tetraoxygenated xanthones, were isolated from the crude hexane extract of the fruits of Garcinia cowa. Cowaxanthone B has previously been reported as a synthetic xanthone. Their structures were elucidated by analysis of spectroscopic data, especially by 1D and 2D NMR. The antibacterial activities of the isolated compounds were also evaluated.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Panthong K,Pongcharoen W,Phongpaichit S,Taylor WCdoi
10.1016/j.phytochem.2006.02.027subject
Has Abstractpub_date
2006-05-01 00:00:00pages
999-1004issue
10eissn
0031-9422issn
1873-3700pii
S0031-9422(06)00145-2journal_volume
67pub_type
杂志文章相关文献
PHYTOCHEMISTRY文献大全abstract::Seven pyranocoumarins, clauemarmarins A-G, along with 6 known analogues were isolated from the stems of Clausena emarginata. Their structures were elucidated by extensive spectroscopic analyses, and the absolute stereochemistries at C-6″ of clauemarmarin B, C and D and the absolute configurations of clauemarmarin E, F...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.05.010
更新日期:2016-10-01 00:00:00
abstract::A phytochemical study of the asteraceous herb Pulicaria crispa (Forssk.) Oliv. resulted in the characterisation of three guaianolide sesquiterpenes, 2alpha,4alpha-dihydroxy-7alphaH,8alphaH,10alphaH-guaia-1(5),11(13)-dien-8beta,12-olide (1), 1alpha,2alpha-epoxy-4beta-hydroxy-5alphaH,7alphaH,8alphaH,10alphaH-guaia-11(13...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2008.03.012
更新日期:2008-06-01 00:00:00
abstract::Phenolic composition of Ambrosia artemisiifolia L. pollen and sub-pollen particles (SPP) aqueous extracts was determined, using a novel extraction procedure. Total phenolic and flavonoid content was determined, as well as the antioxidative properties of the extract. Main components of water-soluble pollen phenolics ar...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2014.10.022
更新日期:2015-01-01 00:00:00
abstract::The ubiquitous glycolipid 1,2-dilinolenoyl-3-galactopyranosylglycerol and a new protolimonoid glucoside, named prieurianoside, were isolated from the leaves of Trichilia prieuriana. The structure of the latter was established, by spectroscopic techniques, as 12beta,21-diacetoxy-29-beta-D-glucopyranosyloxy-23zeta -hydr...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00374-x
更新日期:2000-08-01 00:00:00
abstract::Six new steroidal saponins have been isolated from the fresh bulbs of Camassia cusickii. Their structures were determined by spectroscopic analysis and some chemical transformations to be (25R)-5 alpha-spirostan-3 beta,6 alpha-diol (chlorogenin) 6-O-beta-D-glucopyranoside, chlorogenin 6-O-beta-D-glucopyranosyl-(1----2...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(91)80098-l
更新日期:1991-01-01 00:00:00
abstract::A new flavonol tetraglycoside, together with two known flavonol glycosides, kaempferol 7-rhamnoside and kaempferol 3-rhamnosyl(1-->6) galactoside-7-rhamnoside, were isolated from fresh plant material of Cephalocereus senilis. The structure of the new compound was established as kaempferol 3-O-beta-D-glucopyranosyl(1--...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)97043-2
更新日期:1994-05-01 00:00:00
abstract::Microbial transformations of various steroids are reviewed. Developmental studies on immobilization of microbial cells, techniques for selective transformation and better yields of desired metabolites are highlighted. The present position of microbial biotechnology in the steroid drug industry and the future prospects...
journal_title:Phytochemistry
pub_type: 杂志文章,评审
doi:10.1016/s0031-9422(00)90685-x
更新日期:1993-11-01 00:00:00
abstract::The CH(2)Cl(2) extract of dried leaves of Helianthus annuus L. cv. Peredovick(R) has yielded, in addition to the known sesquiterpene lactones annuolide E and leptocarpin, and the sesquiterpenes heliannuols A, C, D, F, G, H, I, the new bisnorsesquiterpene, annuionone E, and the new sesquiterpenes heliannuol L, helibisa...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00370-9
更新日期:2002-11-01 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
pub_type: 杂志文章
doi:10.1016/s0031-9422(03)00516-8
更新日期:2003-11-01 00:00:00
abstract::A rare 16β-H steroidal alkaloid saponin (1), an avenacoside-type saponin (2), two steroidal saponins (4, 5), one revised-structure steroidal saponin (3) and six known compounds (6-11) were isolated from aerial parts of Solanum surattense Burm. f. Their structures were established on the basis of physical data, as well...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.01.028
更新日期:2011-05-01 00:00:00
abstract::The anticancer agents vinblastine and vincristine are bisindole alkaloids derived from coupling vindoline and catharanthine, monoterpenoid indole alkaloids produced exclusively by the Madagascar periwinkle (Catharanthus roseus). Industrial production of vinblastine and vincristine currently relies on isolation from C....
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.07.001
更新日期:2011-11-01 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::Six new and three synthetically known glycosides have been isolated from the leaves of Moringa oleifera, employing a bioassay-directed isolation method on the ethanolic extract. Most of these compounds, bearing thiocarbamate, carbamate or nitrile groups, are fully acetylated glycosides, which are very rare in nature. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(94)00729-d
更新日期:1995-03-01 00:00:00
abstract::A single-chain variable antibody fragment (scFv) library tested against the non-structural NSP5 protein of human rotavirus A was screened by a yeast two-hybrid system against three proteins derived from the RNA-dependent RNA polymerase (RdRp) of cucumber mosaic virus (CMV), with the aim of blocking their function and ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2019.03.006
更新日期:2019-06-01 00:00:00
abstract::Salicinoids are phenolic glycosides (PGs) characteristic of the Salicaceae and are known defenses against insect herbivory. Common examples are salicin, salicortin, tremuloidin, and tremulacin, which accumulate to high concentrations in the leaves and bark of willows and poplars. Although their biosynthetic pathway is...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2014.10.018
更新日期:2015-05-01 00:00:00
abstract::Dried mosses (five moss species) were progressively extracted and subjected to a four-step Craig distribution. Seven pure flavonoids were isolated and identified. The flavonoids were the flavones apigenin, apigenin-7-O-triglycoside, lucenin-2, luteolin-7-O-neohesperidoside, saponarine and vitexin; and the biflavonoid ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00659-3
更新日期:2003-04-01 00:00:00
abstract::This work used Δ5-sterols and their degradation products to compare the efficiency of biotic and abiotic degradation processes in senescent Mediterranean marine (Posidonia oceanica) and terrestrial (Quercus ilex and Smilax aspera) angiosperms. Type II photosensitized oxidation processes appeared to be more efficient i...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2019.112097
更新日期:2019-11-01 00:00:00
abstract::Evidence is presented for the presence of xylogalacturonan (XGA) in Arabidopsis thaliana. This evidence was obtained by extraction of pectin from the seeds, root, stem, young leaves and mature leaves of A. thaliana, followed by treatment of these pectin extracts with xylogalacturonan hydrolase (XGH). Upon enzymatic tr...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.01.016
更新日期:2007-04-01 00:00:00
abstract::Two neolignan glycosides (junipercomnosides A and B) were isolated from aerial parts of Juniperus communis var. depressa along with two known neolignan glycosides and seven flavonoid glycosides. The structures of the isolated compounds were determined by spectral analysis, in particular by 2D-NMR analysis. The signifi...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2003.10.025
更新日期:2004-01-01 00:00:00
abstract::Intra-specific diversity in Liularia vellerea growing in the northwestern to central Yunnan province of China was studied by chemical and genetic approaches. Samples collected in the Jianchuan, Lijiang, and Zhongdian areas contained 6,15-dioxygenated furanoeremophilanes as their major components (type A); whereas samp...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.12.001
更新日期:2008-03-01 00:00:00
abstract::Injury to plant products by harvest and postharvest operations induces respiration rate and increases the demand for respiratory substrates. Alterations in primary carbon metabolism are likely to support the elevated demand for respiratory substrates, although the nature of these alterations is unknown. To gain insigh...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2010.12.016
更新日期:2011-04-01 00:00:00
abstract::During the search for new protein tyrosine phosphatase (PTP) 1B inhibitors, EtOH extracts from the aerial parts of Lantana camara L. (lantana) collected at Manado (Indonesia) and two subtropical islands in Japan (Ishigaki and Iriomote Islands, Okinawa) exhibited potent inhibitory activities against PTP1B in an enzyme ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2017.08.020
更新日期:2017-12-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.09.013
更新日期:2016-12-01 00:00:00
abstract::Passiflora morifolia, which under natural conditions contains cyanohydrin glucosides linamarin, lotaustralin and epilotaustralin, converted cyclopentanecarbonitrile, 2-cyclopentenecarbonitrile and 3-methylbutanenitrile into the corresponding cyanohydrin glucosides. Turnera angustifolia, which normally produces glucosi...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(96)00065-9
更新日期:1996-06-01 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
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00755-0
更新日期:2003-05-01 00:00:00
abstract::Seven dammarane glycosides, gypenosides GC1 to GC7, together with ten known compounds, gypenosides V, XIV, XLII-XLVI, gynosaponins TN-1, -2, and gymnemaside VI, were isolated from the methanol extract of the aerial parts of Gynostemma pentaphyllum. Their structures were elucidated by both analysis of 1D and 2D NMR spe...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.04.003
更新日期:2011-08-01 00:00:00
abstract::Two pimarane diterpenes structurally related to sphaeropsidins were isolated from the liquid culture of Sphaeropsis sapinea f. sp. cupressi, a plant pathogenic fungus causing a form of canker disease of Italian cypress (Cupressus sempervirens L.). The two metabolites, characterised by spectroscopic methods, were named...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00015-8
更新日期:2002-04-01 00:00:00
abstract::Four meroterpenoids, 1-hydroxychevalone C, 1-acetoxychevalone C, 1,11-dihydroxychevalone C, and 11-hydroxychevalone C and two ester epimers, 2S,4S-spinosate and 2S,4R-spinosate, together with seven known compounds, chevalones B, C, and E, tryptoquivaline, nortryptoquivaline, tryptoquivaline L, and quinadoline A were i...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.09.008
更新日期:2016-12-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.12.009
更新日期:2017-03-01 00:00:00
abstract::Five tirucallane-type triterpenes were isolated along with nine known triterpenes from the bark of Juliania adstringens. The structures of the five triterpenes were determined by analysis of their 1H and 13C NMR and mass spectral data, and each compound exhibited growth inhibitory activity against leukemia cells (L-12...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2003.12.012
更新日期:2004-04-01 00:00:00