Abstract:
:A new sterol with a non-conventional side chain has been isolated from the whole plant of Anoectochilus koshunensis, together with four known sterols, a megastigmane glucoside and 2'-deoxyadenosine. The structure of the new sterol was elucidated as 26-methylstigmasta-5,22,25, (27)-trien-3 beta-ol based on chemical and detailed spectroscopic evidence.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Ito A,Yasumoto K,Kasai R,Yamasaki Kdoi
10.1016/s0031-9422(00)89743-5subject
Has Abstractpub_date
1994-08-01 00:00:00pages
1465-7issue
6eissn
0031-9422issn
1873-3700pii
S0031-9422(00)89743-5journal_volume
36pub_type
杂志文章相关文献
PHYTOCHEMISTRY文献大全abstract::Five cucurbitacins, kuguacins A-E (1-5), together with three known analogues, 3beta,7beta,25-trihydroxycucurbita-5,(23E)-diene-19-al (6), 3beta,25-dihydroxy-5beta,19-epoxycucurbita-6,(23E)-diene (7), and momordicine I (8), were isolated from roots of Momordica charantia. Structures of 1-5 were elucidated by NMR and MS...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.10.020
更新日期:2008-02-01 00:00:00
abstract::Withania somnifera (L.) Dunal (Solanaceae), commonly known as Ashwagandha, is one of the most valued Indian medicinal plant with several pharmaceutical and nutraceutical applications. Metabolic profiling was performed by GC-MS and NMR spectroscopy on the fruits obtained from four chemotypes of W. somnifera. A combinat...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2013.03.013
更新日期:2013-09-01 00:00:00
abstract::Taxol content in the bark of Taxus baccata trees growing in a homogenous (uniform) environment at Jageshwar, District Almora in Central Himalaya has been quantified. The average taxol concentration in the bark of sampled trees was 0.0558+/-0.008% (of dry wt.) and was about 64% higher for male plants (averaged across t...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00115-2
更新日期:2002-07-01 00:00:00
abstract::Phytochemical investigation of the flowers of Inula japonica led to isolation of nine sesquiterpenoids, inujaponins A-I, as well as eighteen known ones. These sesquiterpenoids belong to six skeletal-types, including eudesmane, 1,10-seco-eudesmane, germacrane, guaiane, 4,5-seco-guaiane, and pseudoguaiane sesquiterpenoi...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.07.008
更新日期:2016-09-01 00:00:00
abstract::Carrageenans extracted from gametophytic and sporophytic Chondrus crispus were analysed by hydrolysis, KCl fractionation and 1H NMR spectroscopy. The carrageenan from gametophytic plants is composed predominantly of two KCl insoluble fractions which contain kappa-carrageenan as the major component with 1-carrageenan a...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(92)90032-l
更新日期:1992-02-01 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
pub_type: 杂志文章
doi:10.1016/s0031-9422(01)00085-1
更新日期:2001-07-01 00:00:00
abstract::Anthocyanins are naturally occurring flavonoids derived from the phenylpropanoid pathway. There is increasing evidence of the preventative and protective roles of anthocyanins against a broad range of pathologies, including different cancer types and metabolic diseases. However, most of the fresh produce available to ...
journal_title:Phytochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.phytochem.2018.05.013
更新日期:2018-09-01 00:00:00
abstract::20(S)-protopanaxadiol (PPD(S)) and 20(R)-protopanaxadiol (PPD(R)), the main metabolites of ginsenosides Rg3(S) and Rg3(R) in black ginseng, are potential candidates for anti-cancer therapy due to their pharmacological activities such as anti-tumor properties. In the present study, we report the preparation of PPD(S, R...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2010.05.007
更新日期:2010-09-01 00:00:00
abstract::Examination of the bulbs of Bessera elegans (Liliaceae) led to isolation of nine new and five known steroidal glycosides. The structures of the nine compounds were determined based on the results of spectroscopic analysis, including two-dimensional NMR, and hydrolysis followed by chromatographic and spectroscopic anal...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2013.09.023
更新日期:2013-12-01 00:00:00
abstract::Vanadium-dependent peroxidase activity in extracts of Ascophyllum nodosum growing in the intertidal region close to Roscoff/France, and algal vanadium levels, followed approximately similar seasonal variation, as deduced from a study lasting from April 2005 to March 2006. High peroxidase (PO) activity was found in ext...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2008.09.004
更新日期:2008-11-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.11.007
更新日期:2012-04-01 00:00:00
abstract::In addition to hecogenin 3-O-beta-D-glucopyranosyl(1--> 4)-beta-D-galactopyranoside, two new steroidal saponins were isolated from the aerial parts of Tribulus terrestris L. On the basis of chemical and spectroscopic evidence, especially 2D NMR spectroscopic techniques, the structures of the new saponins were establis...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(96)00182-3
更新日期:1996-08-01 00:00:00
abstract::In search for new or chemo-taxonomically relevant bioactive compounds from chemically unexplored Hypericum species, four previously undescribed natural products, named peplidiforones A-D were isolated and characterized from Hypericum peplidifolium A. Rich., together with six known compounds. The structures of all comp...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.02.003
更新日期:2016-04-01 00:00:00
abstract::Four new oleanane-type saponins 3-O-α-L-rhamnopyranosyl-(1 → 4)-β-D-glucuronopyranosyl-22-O-β,β-dimethylacryloylA1-barrigenol (1), 3-O-α-L-rhamnopyranosyl-(1 → 4)-β-D-glucuronopyranosyl-22-O-angeloylA1-barrigenol (2), 3-O-β-D-glucopyranosyl-(1 → 2)-[β-D-glucopyranosyl-(1 → 6)]-β-D-glucopyranosyl-21,22,28-O-triacetyl-(...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2014.11.017
更新日期:2015-02-01 00:00:00
abstract::Although the mechanism of accumulation of C8-C16 saturated fatty acids in seed oils has been well-studied, the control of stearic (C18:0) acid deposition in high stearate seed fat is still unclear. We investigated the mechanism that regulates high level of stearate and oleate (C18:1) accumulation in mango (Mangifera i...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2010.11.004
更新日期:2011-02-01 00:00:00
abstract::From the pro-inflammatory active extract of Euphorbia peplus, a new diterpene polyester (1) based on the jatrophane skeleton was isolated together with the known compounds 2-5. The irritant activities of some jatrophane diterpenes (2, 3 and 6-9) were also investigated: only compound 2 was found to exert a weak pro-inf...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00088-6
更新日期:1999-07-01 00:00:00
abstract::Three monoamine oxidase (MAO) inhibitors were isolated from Gentiana lutea. Their structures were elucidated to be 3-3''linked-(2'-hydroxy-4-O-isoprenylchalcone)-(2'''-hydroxy-4''-O-isoprenyldihydrochalcone) (1), 2-methoxy-3-(1,1'-dimethylallyl)-6a,10a-dihydrobenzo(1,2-c)chroman-6-one and 5-hydroxyflavanone. These com...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.06.025
更新日期:2004-08-01 00:00:00
abstract::This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2012.03.001
更新日期:2012-03-16 00:00:00
abstract::Investigation of the extracts of a culture of Cladosporium tenuissimum, a known hyperparasite of several rust fungi, gave rise to the isolation of cladosporols B-E (2-5). Their structure and stereochemistry were elucidated on the basis of 1H and 13C NMR evidence and CD measures. Cladosporols 1-5 were active in inhibit...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.03.013
更新日期:2004-07-01 00:00:00
abstract::Anti-inflammatory activity guided fractionation of the n-hexane soluble fraction of a 70% aqueous methanolic extract of the dried fruits of Forsythia suspensa afforded two new triterpenes. The structures of these compounds were elucidated as 3beta-acetyl-20,25-epoxydammarane-24alpha-ol (1) and 3beta-acetyl-20,25-epoxy...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(01)00028-0
更新日期:2001-04-01 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::Terpene synthases (TPS) require divalent metal ion co-factors, typically magnesium, that are bound by a canonical DDXXD motif, as well as a putative second, seemingly less well conserved and understood (N/D)DXX(S/T)XXXE motif. Given the role of the Ser/Thr side chain hydroxyl group in ligating one of the three catalyt...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2008.12.022
更新日期:2009-02-01 00:00:00
abstract::From the hexane extract of berries of Juniperus excelsa, one new and four known diterpenes were isolated besides a known sesquiterpene. The structures of the known diterpenes were identified as isopimaric, isocommunic, (-)ent-trans communic and sandracopimaric acids, along with the sesquiterpene 4a-hydroxycedrol and t...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(98)00675-x
更新日期:1999-04-01 00:00:00
abstract::During a study on the chemistry and biological activity of Kuwaiti plants, new metabolites including 4,6-dihydroxy-3-[3'-methyl-2'-butenyl]-5-[4''-hydroxy-3''-methyl-2''-butenyl]-cinnamic acid (1), the 3R,8R stereoisomer of the C17 polyacetylene dehydrofalcarindiol (2) and a C10 polyacetylene glucoside (3) were charac...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.11.010
更新日期:2005-01-01 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
pub_type: 杂志文章
doi:10.1016/j.phytochem.2019.112225
更新日期:2020-02-01 00:00:00
abstract::Cinnamyl alcohol dehydrogenase (CAD) (EC 1.1.1.195) from a dicot, Aralia cordata, was purified to homogeneity and its properties were characterized. The enzyme shows a preference for cinnamyl alcohols and cinnamyl aldehydes as substrates. The M(r) is estimated at 72,000. The enzyme is composed of two heterogeneous sub...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)95137-9
更新日期:1993-02-01 00:00:00
abstract::Phytochemical re-investigation of the aerial parts of Bonamia spectabilis (Convolvulaceae) led to the isolation of four minor tetrahydrofuran-type sesquilignans (bonaspectins E-H) together with the known neolignan virolongin A and the known lignan rel-(7S,8R,7'R,8'R)-3,3',4,4',5,5'-hexamethoxylignan. Their structures ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(02)00101-2
更新日期:2002-05-01 00:00:00
abstract::Nine new bidesmosidic 3-O-glucuronide oleanane triterpenoid saponins were isolated from the stem bark of Symplocos glomerata King along with two known saponins, salsoloside C and copteroside E, and two major lignans, (-)-pinoresinol and (-)-pinoresinol-4'-O-beta-D-glucopyranoside. The structures of the new saponins we...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.01.012
更新日期:2004-03-01 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::Fractionation of an ethanol extract of a Madagascar collection of the leaves and fruit of Cassipourea lanceolata Tul. led to the isolation of three euphane triterpenoids 1-3. The (1)H and (13)C NMR spectra of all compounds were fully assigned using a combination of 2D NMR experiments, including COSY, TOCSY, HSQC (HMQC...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2009.12.009
更新日期:2010-04-01 00:00:00