Abstract:
:Three novel polyoxypregnane glycosides, volubiloside A, B and C (1-3), were isolated from the flowers of Dregea volubilis Linn., and their structures were elucidated as drevogenin D-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-cymaropyranoside, drevogenin D-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-digitoxopyranoside and drevogenin P-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-cymaropyranoside, respectively, on the basis of extensive NMR experiments, MALDI-TOF MS, and some chemical strategies.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Sahu N,Panda N,Mandal N,Banerjee S,Koike K,Nikaido Tdoi
10.1016/s0031-9422(02)00260-1subject
Has Abstractpub_date
2002-10-01 00:00:00pages
383-8issue
4eissn
0031-9422issn
1873-3700pii
S0031942202002601journal_volume
61pub_type
杂志文章相关文献
PHYTOCHEMISTRY文献大全abstract::While the myrosinase-glucosinolate system has been reviewed in recent years by a number of authors, little attention has been paid to the enzymic and non-enzymic degradation of glucosinolates. Non-enzymic degradation processes are particularly important in the processing of brassica vegetables with respect to both fla...
journal_title:Phytochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.phytochem.2006.02.024
更新日期:2006-06-01 00:00:00
abstract::Maytenus aquifolium (Celastraceae) and Salacia campestris (Hippocrateaceae) species accumulate friedelane and quinonemethide triterpenoids in their leaves and root bark, respectively. Enzymatic extracts obtained from leaves displayed cyclase activity with conversion of the substrate oxidosqualene to the triterpenes, 3...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)00285-5
更新日期:2000-12-01 00:00:00
abstract::Two new flavanoids, 5,7-dimethoxy-3',4'-methylenedioxyflavanone and isobonducellin along with 2'-hydroxy-2,3,4',6'-tetramethoxychalcone, 5,7-dimethoxyflavone and bonducellin were isolated from the aerial parts of Caesalpinia pulcherrima. The structures of the compounds were settled mainly by interpretation of their 1D...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(03)00325-x
更新日期:2003-08-01 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::An 80% acetone extract of Monarda punctata showed an inhibitory effect on lipase activity in isolated mouse plasma in vitro and carvacrol was obtained as the active constituent. It had an IC₅₀ value of 4.07 mM invitro and suppressed elevations in blood triacylglycerol levels in olive oil-loaded mice. Furthermore, from...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2010.08.009
更新日期:2010-11-01 00:00:00
abstract::From the petroleum ether extract of the rhizomes of Tamus communis, the 7-hydroxy-2,3,4,8-tetramethoxyphenanthrene (1) was isolated, together with the known 2,3,4-trimethoxy-7,8-methylenedioxyphenanthrene (2), 3-hydroxy-2,4,-dimethoxy-7,8-methylenedioxyphenanthrene (3), 2-hydroxy-3,5,7-trimethoxyphenanthrene (4) and 2...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2006.10.028
更新日期:2007-03-01 00:00:00
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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.11.012
更新日期:2005-03-01 00:00:00
abstract::The compositions of the essential oils obtained from ten populations of Thymus caespititius grown on S. Jorge (Azores) were studied by GC and GC-MS. All the oils analysed were dominated by their monoterpene fraction (69-9%). The sesquiterpene fraction was rather small (4-17%) and consisted mainly of oxygen-containing ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)00278-8
更新日期:2000-10-01 00:00:00
abstract::Chemical examination of the ethyl acetate solubles of the CH(3)OH:CH(2)Cl(2) (1:1) extract of the roots of Excoecaria agallocha L. collected from Godavary estuary resulted in the isolation of three more new diterpenoids, agallochins M-O (1-3). The structures of the new diterpenoids were elucidated by a study of their ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00269-8
更新日期:2003-02-01 00:00:00
abstract::From a water extract of whole plants of Sesamum indicum, two new, and six known phenylethanoid glycosides, and three new triglycosides which had the same sugar sequence were isolated. The structures of the new compounds were elucidated from chemical and spectroscopic evidence. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(93)85348-u
更新日期:1993-10-01 00:00:00
abstract::Two new acetogenins, gardnerilins A and B, have been isolated from the roots of Goniothalamus gardneri. Both are C35 acetogenins containing non-tetrahydrofuran rings. Their structures have been established on the basis of spectral evidence. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(97)00959-x
更新日期:1998-11-01 00:00:00
abstract::Four new xanthones have been isolated from the roots of Hypericum roeperanum. Their structures have been established by a combination of spectroscopic and chemical methods as 1,6-dihydroxy-5-methoxy-4',5'-dihydro-4',4',5'-trimethylfurano- (2',3':3,4)-xanthone (5-O-methyl-2-deprenylrheediaxanthone B), 1,6-dihydroxy-5-m...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(96)00284-1
更新日期:1996-09-01 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
pub_type: 杂志文章,评审
doi:10.1016/j.phytochem.2004.03.005
更新日期:2004-04-01 00:00:00
abstract::The formation of the fruit body represents the final phase of the ectomycorrhizal fungus T. borchii life cycle. Very little is known concerning the molecular and biochemical processes involved in the fructification phase. 2-DE maps of unripe and ripe ascocarps revealed different protein expression levels and the compa...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.02.012
更新日期:2004-04-01 00:00:00
abstract::(-)-Sabinene is the major monoterpene produced by a European strain of the liverwort Conocephalum conicum. A cell-free extract from in vitro cultured plants catalysed the cyclization of geranyl diphosphate to sabinene. The responsible monoterpene cyclase was partially purified and characterized as an operationally sol...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(97)00741-3
更新日期:1998-09-01 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::Five phenylpropanoid esters of sucrose glycosides, trivially named smiglasides A-E, were isolated from the rhizomes of Smilax glabra. Their structures were elucidated on the basis of spectroscopic studies. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00522-1
更新日期:2000-04-01 00:00:00
abstract::The fatty acid compositions of 22 species of marine macrophytes, belonging to the Ceramiales, Cryptonemiales, Nemalionales, Laminariales, Chordariales, Scytosiphonales, Desmarestiales, Dictyosiphonales, Fucales, Dictyotales and Ulvales and collected from the Bohai Sea, were determined by capillary gas chromatography. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(01)00437-x
更新日期:2002-01-01 00:00:00
abstract::Epoxide hydrolases (EH, EC 3.3.2.3) have been proposed to be key enzymes in the biosynthesis of polyether (PE) ladder compounds such as the brevetoxins which are produced by the dinoflagellate Karenia brevis. These enzymes have the potential to catalyze kinetically disfavored endo-tet cyclization reactions. Data minin...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2015.11.002
更新日期:2016-02-01 00:00:00
abstract::Radicinin is a phytotoxic and antibiotic metabolite produced by some phytopathogenic fungi. Precursor administration and cell-free experiments with deoxyradicinin and radicinin were carried out in Bipolaris coicis H13-3. When deoxyradicinin was administered to the fungus, radicinin and 3-epi-radicinin formed. When rad...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.11.010
更新日期:2012-03-01 00:00:00
abstract::Prenylation reactions contribute considerably to the diversity of natural products. Polyprenylated secondary metabolites include hyperforin which is both quantitatively and pharmacologically a major constituent of the medicinal plant Hypericum perforatum (St. John's wort). Cell cultures of the related species Hypericu...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.10.020
更新日期:2005-01-01 00:00:00
abstract::Direct hyphenation of analytical-scale high-performance liquid chromatography, photo-diode array detection, mass spectrometry, solid-phase extraction and nuclear magnetic resonance spectroscopy (HPLC-PDA-MS-SPE-NMR) has been used for accelerated dereplication of crude extract of Haplophyllum acutifolium (syn. Haplophy...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2009.05.004
更新日期:2009-05-01 00:00:00
abstract::Triterpene saponins 1-8 were isolated from the aerial parts of Gynostemma pubescens. Among them, compounds 1-4, 8 possess carboxylic groups at both C-21 and C-29, 5 contains a carboxylic group at C-21 and an aldehyde function at C-29, whereas 6 and 7 contain carboxylic groups at C-21 and hydroxymethylene groups at C-2...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.05.005
更新日期:2007-07-01 00:00:00
abstract::Two saponins and a sapogenin were isolated from the leaves of Ilex brevicuspis. Their structures were established by means of spectroscopic methods as brevicuspisaponin 1 (3-O-alpha-L-arabinopyranosyl-20(S)-19 alpha,24-dihydroxyursolic acid), brevicuspisaponin 2 (3-O-alpha-L-arabinopyranosyl-20(S)-19 alpha,23,24-trihy...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00517-8
更新日期:2000-04-01 00:00:00
abstract::Artemisinin was derivatized to dihydroartemisinin carboxymethylether in three steps, without disturbing the peroxide bridge, and then linked to either thyroglobulin (TGB) or bovine serum albumin (BSA). The artemisinin-TGB and -BSA conjugates were injected in female New Zealand rabbits but only the artemisinin-TGB conj...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(95)00542-0
更新日期:1996-01-01 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::Eleven triterpenoid saponins were isolated from the roots of Gypsophila trichotoma Wender. (G. trichotoma Wender. var. trichotoma) (Caryophyllaceae), together with one known compound. The structures were established on the basis of extensive NMR analysis ((1)H, (13)C NMR, COSY, TOCSY, ROESY, HSQC, and HMBC), completed...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2013.03.001
更新日期:2013-06-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.09.001
更新日期:2011-12-01 00:00:00
abstract::The dichloromethane extract of the wood of Carissa lanceolata R.Br. (Apocynaceae) afforded the eudesmanes carissone, dehydrocarissone and carindone. This is the first account of carissone being isolated from the wood of C. lanceolata, and of carindone being isolated from this Carissa species. Dehydrocarissone has not ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)00343-5
更新日期:2000-11-01 00:00:00
abstract::Stem bark of Hippocratea excelsa afforded six pentacyclic triterpenes, five oleanane and one ursane types. They were identified as 11beta,21beta-dihydroxy-olean-12-ene-3-one (2), 3alpha,11alpha,21beta-trihydroxy-olean-12-ene (3), 3alpha,21beta-dihydroxy-11alpha-methoxy-olean-12-ene (4), 3alpha,21beta-dihydroxy-olean-9...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.10.016
更新日期:2008-02-01 00:00:00