Abstract:
:In addition to Z-coniferyl and Z-sinapyl alcohols, bark extracts of Fagus grandifolia also contain significant amounts of the glucosides, Z-coniferin, Z-isoconiferin (previously called faguside) and Z-syringin. The corresponding E-isomers of these glucosides do not accumulate to a detectable level. The accumulation of the Z-isomers suggests that either they are not lignin precursors or that they are reservoirs of monolignols for subsequent lignin biosynthesis; it is not possible to distinguish between these alternatives. The co-occurrence of Z-coniferin and Z-isoconiferin demonstrate that glucosylation of monolignols can occur at either the phenolic or the allylic hydroxyl groups.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Lewis NG,Inciong EJ,Ohashi H,Towers GH,Yamamoto Edoi
10.1016/0031-9422(88)80107-9subject
Has Abstractpub_date
1988-01-01 00:00:00pages
2119-21issue
7eissn
0031-9422issn
1873-3700pii
0031-9422(88)80107-9journal_volume
27pub_type
杂志文章相关文献
PHYTOCHEMISTRY文献大全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::Cholestane glycosides, dioseptemlosides A (1) and B (2), together with six spirostane glycosides, dioseptemlosides C-H (3-8), were isolated from the rhizomes of Dioscorea septemloba. Their structures were established on the basis of physical data, spectroscopic analysis (HRESIMS, 1D and 2D NMR), and chemical methods. ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.12.014
更新日期:2008-04-01 00:00:00
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 da...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2006.02.027
更新日期:2006-05-01 00:00:00
abstract::Six acylated delphinidin glycosides (pigments 1-6) and one acylated kaempferol glycoside (pigment 9) were isolated from the blue flowers of cape stock (Heliophila coronopifolia) in Brassicaceae along with two known acylated cyanidin glycosides (pigments 7 and 8). Pigments 1-8, based on 3-sambubioside-5-glucosides of d...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.07.020
更新日期:2011-12-01 00:00:00
abstract::Eleven oleanane-type triterpenoid glycosides, named gordonsaponins A-K, were isolated from the stems of Gordonia kwangsiensis. Their structures were elucidated by spectroscopic and chemical methods. The cytotoxic activities of all eleven were evaluated against five human tumor cell lines (HCT-8, Bel-7402, BGC-823, A54...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2012.08.019
更新日期:2013-01-01 00:00:00
abstract::Landraces of maize (Zea mays ssp. mays) and its wild teosinte relatives (Zea mays spp. parviglumis and mexicana) were surveyed for sensitivity to fumonisin B(1), a phytotoxin produced by the maize pathogen Gibberella moniliformis. Only two of 42 Z. mays samples were highly insensitive to FB(1) (ED(50) = ca. 200 microM...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2005.08.013
更新日期:2005-10-01 00:00:00
abstract::A new bisdesmodic triterpenoid saponin, dulcin was isolated from the seeds of Pithecellobium dulce and was identified as 3-O-[beta-D-glucopyranosyl (1-->2)-alpha-L-arabinopyranosyl]- 28-O-[beta-D-xylopyranosyl (1-->6)-beta-D-glucopyranosyl]-echinocystic acid. The known oleanolic acid saponin PE, oleanolic acid 3-O-bet...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(00)90425-4
更新日期:1994-11-01 00:00:00
abstract::In a chemotaxonomic survey of 57 Pelargonium species, leaf exudate flavonoids were detected in 35% of the sample, mostly in trace amounts. However, chrysin and a related C-methylflavanone were identified as major leaf surface constituents of P. crispum, and a mixture of quercetin and kaempferol mono-, and di- and trim...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(97)00514-1
更新日期:1997-12-01 00:00:00
abstract::Chemical systematics sets out to interpret the phylogenetic implications of the occurrence and distribution of secondary metabolites. In this review, a number of the major contributions from the 1960's and 1970's are identified and re-assessed in the light of recent evidence gained from DNA studies. It is shown that f...
journal_title:Phytochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.phytochem.2007.06.029
更新日期:2007-11-01 00:00:00
abstract::Five new compounds (three esters and two glycosides) and seven previously reported compounds were isolated as biotransformation products of digitoxigenin by ginseng hairy root cultures. The new esters and glycosides were elucidated as digitoxigenin stearate, digitoxigenin palmitate, digitoxigenin myristate, 3-epidigit...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(90)80029-g
更新日期:1990-01-01 00:00:00
abstract::The degradation of the beta-conglycinin protein reserves in soybean seeds during germination and early growth begins with the proteolysis of its alpha and alpha' subunits by an enzyme called Protease C1. In the pathway, a number of proteolytic intermediates are produced and subsequently degraded. Determination of the ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(95)00896-9
更新日期:1996-05-01 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::Compound-specific hydrogen and carbon isotopic compositions in n-alkanoic acids, phytol and sterols were determined for various plant classes (terrestrial C3-angiosperm; C3-gymnosperm; C4; crassulacean acid metabolism (CAM); and aquatic C3 plants) in order to investigate isotopic fractionations among various plant cla...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2004.03.036
更新日期:2004-05-01 00:00:00
abstract::In order to determine how plant uptake of a sulfur-rich secondary metabolite, sinalbin, affects the metabolic profile of sulfur-deficient plants, gas chromatography time-of-flight mass spectrometry (GC-TOF-MS), in combination with liquid chromatography-mass spectrometry (LC-MS), was used to survey the metabolome of Ar...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2011.06.002
更新日期:2011-10-01 00:00:00
abstract::Glucosinolates are sulphur-containing glycosides found in brassicaceous plants that can be hydrolysed enzymatically by plant myrosinase or non-enzymatically to form primarily isothiocyanates and/or simple nitriles. From a human health perspective, isothiocyanates are quite important because they are major inducers of ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2009.07.035
更新日期:2009-07-01 00:00:00
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::The heterocysts of limnetic nitrogen-fixing filamentous cyanobacteria contain unique glycolipids in their cell wall that create the distinctive gas impermeability of the heterocyst cell wall as well as serve as biomarker lipids for these microbes. It has been assumed that marine free-living and endosymbiotic cyanobact...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2012.09.002
更新日期:2013-01-01 00:00:00
abstract::Two new furostanol saponins, named chinenosides II and III, were isolated along with seven known compounds, from the bulbs of Allium chinese G. Don by a combination of silica gel, Diaion HP-20, and octadecylsilanized (ODS) silica gel column chromatographies and preparative HPLC. On the basis of chemical and spectrosco...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(95)00553-6
更新日期:1996-01-01 00:00:00
abstract::Chemical investigation of stems of the mangrove plant, Pongamia pinnata, resulted in isolation and characterization of five structurally unusual flavonoids pongamones A-E, along with 16 known flavonoid metabolites. Their structures were determined on the basis of spectroscopic analyses and by comparison of their spect...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2006.05.016
更新日期:2006-07-01 00:00:00
abstract::In the course of our continuing exploration for novel bioactive lead compounds (s) from the species Boswellia, we have recently reported incensole derivatives isolated from Boswellia papyrifera Hochst. Given the known antidepressant-like effects of incensole and incensole acetate, we herein present that the low dose i...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2019.04.007
更新日期:2019-07-01 00:00:00
abstract::We have previously reported the purification and partial characterization of two cationic peroxidases from the cell walls of seeds and seedlings of the South American conifer, Araucaria araucana. In this work, we have studied the amino acid composition and NH2-terminal sequences of both enzymes. We also compare the da...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/0031-9422(94)00665-g
更新日期:1995-05-01 00:00:00
abstract::The cyclotides are currently the largest known family of head-to-tail cyclic proteins. The complex structure of these small plant proteins, which consist of approximately 30 amino acid residues, contains both a circular peptide backbone and a cystine knot, the combination of which produces the cyclic cystine knot moti...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2007.10.023
更新日期:2008-02-01 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::Plant cell suspension cultures of Rauvolfia are able to produce a high amount of arbutin by glucosylation of exogenously added hydroquinone. A four step purification procedure using anion exchange, hydrophobic interaction, hydroxyapatite-chromatography and chromatofocusing delivered in a yield of 0.5%, an approximatel...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(99)00539-7
更新日期:2000-01-01 00:00:00
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
pub_type: 杂志文章
doi:10.1016/0031-9422(92)83093-e
更新日期:1992-05-01 00:00:00
abstract::From the aerial parts of Chrozophora obliqua, two phenylpropanoid glucosides: 4-O-methyl guaiacylglycerol 9-O-beta-glucopyranoside (1) and 4-O-methyl guaiacylglycerol 8-O-beta-glucopyranoside (2) together with syringin, benzyl alcohol glucoside, isorhamnetin-3-O-beta-glucopyranoside-7-O-alpha-rhamnopyranoside and quer...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(01)00262-x
更新日期:2001-10-01 00:00:00
abstract::Flavonoids in the petals of several C. ternatea lines with different petal colors were investigated with LC/MS/MS. Delphinidin 3-O-(2"-O-alpha-rhamnosyl-6"-O-malonyl)-beta-glucoside was newly isolated from the petals of a mauve line (wm) together with three known anthocyanins. They were identified structurally using U...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/s0031-9422(03)00504-1
更新日期:2003-11-01 00:00:00
abstract::The Arabidopsis thaliana genome has over 550 protease sequences representing all five catalytic types: serine, cysteine, aspartic acid, metallo and threonine (MEROPS peptidase database, http://merops.sanger.ac.uk/), which probably reflect a wide variety of as yet unidentified functions performed by plant proteases. Re...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2003.09.005
更新日期:2004-01-01 00:00:00
abstract::Seven pairs of undescribed enantiomeric bis-coumarins, (±)-dievodialetins A-G, were separated from the roots of Evodia lepta Merr. Two coumarin nuclei were linked via a 1,4-dimethyl4-vinylcyclohexene moiety in (±)-dievodialetins C-G. The structures of the undescribed compounds, including their absolute configurations ...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2020.112597
更新日期:2021-02-01 00:00:00
abstract::The low-molar-mass (LMM) fraction, only, i.e., the GC-eluting compounds, which are mainly lignans, has been characterized in Norway spruce knotwood hydrophilic extracts previously. Of this fraction, many lignans and sesquilignans and all GC peaks supposedly representing dilignans remain unidentified. In this work, dil...
journal_title:Phytochemistry
pub_type: 杂志文章
doi:10.1016/j.phytochem.2016.05.006
更新日期:2016-10-01 00:00:00