Lanostanes and friedolanostanes from the bark of Garcinia speciosa.

abstract：:Three undescribed isoflavones, derriscandenon A, B, and C, together with seven known isoflavones were isolated and structurally characterized during a study of the chemical constituents in the leaves of Derris scandens (Roxb.) Benth (Leguminosae, Fabaceae) collected in Bangladesh. The inhibitory activity of the compou...

journal_title：Phytochemistry

authors： Ito C,Matsui T,Miyabe K,Hasan CM,Rashid MA,Tokuda H,Itoigawa M

更新日期：2020-07-01 00:00:00

abstract：:A new bidesmosidic triterpenoidal saponin of hederagenin was isolated from the ethanolic extract of the roots of Symphytum officinale L. Its structure was elucidated by using 1H NMR, 1H-1H COSY NMR, heteronuclear 1H-13C correlated spectroscopy (heteroCOSY), 13C NMR, DEPT, FAB mass spectrometry and chemical evidence as...

journal_title：Phytochemistry

authors： Noorwala M,Mohammad FV,Ahmad VU,Sener B

更新日期：1994-05-01 00:00:00

abstract：:Toddaliopsins A-D, four novel 1,2,3-trioxygenated acridone alkaloids, have been isolated from the leaves of Toddaliopsis bremekampii. Toddaliopsins B-D are the first reported acridone alkaloids with substituted N-methyl groups, in the light of which the chemotaxonomic relationship of Toddaliopsis and Vepris is discuss...

journal_title：Phytochemistry

authors： Naidoo D,Coombes PH,Mulholland DA,Crouch NR,van den Bergh AJ

更新日期：2005-07-01 00:00:00

abstract：:Seven new biotransformation products were isolated from a jar fermentor culture of Eucalyptus perriniana following administration of (+)-camphor. The main product was (1S,4R,6S)-6-hydroxybornan-2-one 6-O-beta-D-glucopyranoside. The minor components were (1S,4R,6R)-6-hydroxybornan-2-one 6-O-beta-D-glucopyranoside, (1R,...

journal_title：Phytochemistry

authors： Orihara Y,Noguchi T,Furuya T

更新日期：1994-03-01 00:00:00

abstract：:Contemporary glycobiology reflects the intense interest in glycoproteins and their biological roles. Addition of saccharides by N- or O-glycosylation is precise rather than random and forms a uniquely interactive molecular surface. We designate these well conserved glycomotifs as glycomodules to emphasize their functi...

journal_title：Phytochemistry

authors： Kieliszewski MJ

更新日期：2001-06-01 00:00:00

abstract：:Two new flavanone glycosides, alhagitin and alhagidin, have been isolated from the whole plant of Alhagi pseudalhagi and their structures established respectively as naringenin 5-methyl ether 4'-glucoside and hesperitin 7-galactosyl(1-->2)[rhamnosyl(1-->6)]glucoside by chemical and spectroscopic methods. ...

journal_title：Phytochemistry

authors： Singh VP,Yadav B,Pandey VB

更新日期：1999-06-01 00:00:00

abstract：:A procyanidin dimer xyloside, catechin-(4α→8)-7-O-β-xylopyranosyl-catechin, was isolated from the inner bark of Betula pendula and its structure was determined using 1D and 2D NMR, CD and high-resolution ESIMS. Interestingly, the 7-O-β-xylopyranose unit was found to be present in the lower terminal unit of the dimer. ...

journal_title：Phytochemistry

authors： Liimatainen J,Karonen M,Sinkkonen J

更新日期：2012-04-01 00:00:00

abstract：:Two new triterpenoid glycosides, quinovic acid-3 beta-O-beta-D- glucopyranosyl-(1-->4)-alpha-L-rhamnopyranoside and quinovic acid-3 beta-O-beta-D-glucopyranosyl-(1-->3)-beta-D-fucopyranoside (named rubelloside A and B, respectively), were isolated from roots of Adina rubella. Their structures were elucidated by spectr...

journal_title：Phytochemistry

authors： Fang SY,He ZS,Gao JH,Wang P

更新日期：1995-07-01 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

authors： Bugos RC,Chiang VL,Campbell WH

更新日期：1992-05-01 00:00:00

abstract：:Three previously undescribed compounds, maneonenes and isomaneonene derivatives; in addition to five known compounds, two cuparene, one chamigrene, and two cis-maneonenes were isolated from the Red Sea red alga Laurencia obtusa. The chemical structures of all unknown metabolites were characterized employing spectrosco...

journal_title：Phytochemistry

authors： Bawakid NO,Alarif WM,Ismail AI,El-Hefnawy ME,Al-Footy KO,Al-Lihaibi SS

更新日期：2017-11-01 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

authors： Huang GY,Cui H,Lu XY,Zhang LD,Ding XY,Wu JJ,Duan LX,Zhang SJ,Liu Z,Zhang RR

更新日期：2021-02-01 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

authors： Allwood JW,Clarke A,Goodacre R,Mur LA

更新日期：2010-04-01 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

authors： Fobofou SA,Harmon CR,Lonfouo AH,Franke K,Wright SM,Wessjohann LA

更新日期：2016-04-01 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

authors： Makino M,Motegi T,Fujimoto Y

更新日期：2004-04-01 00:00:00

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 ...

journal_title：Phytochemistry

authors： Lewis NG,Inciong EJ,Ohashi H,Towers GH,Yamamoto E

更新日期：1988-01-01 00:00:00

abstract：:From the roots of Bupleurum wenchuanense 14 derivatives of saikosaponin were isolated and identified as 2"-O-beta-D-xylopyranosylsaikosaponin b2, 3",6"-O O-diacetylsaikosaponin b2, 2"-O-beta-D-glucopyranosylsaikosaponin b2, saikosaponin b2, 6"-O-acetylsaikosaponin b2, saikosaponin d, 2"-O-acetylsaikosaponin d, 3"-O-ac...

journal_title：Phytochemistry

authors： Luo SQ,Lin LZ,Cordell GA

更新日期：1993-07-01 00:00:00

abstract：:In a chemosystematic investigation of tribe Veroniceae (Plantaginaceae), representatives of Camptoloma, Sibthorpia, Veronica subg. Pentasepalae and subg. Hebe, Veronicastrum, Wulfenia, and the related Ellisiophyllum and Globularia were examined for non-flavonoid glycosides. From the 14 species studied, 28 different ir...

journal_title：Phytochemistry

authors： Taskova RM,Gotfredsen CH,Jensen SR

更新日期：2006-02-01 00:00:00

abstract：:Alkaline nitrobenzene oxidation, ozonation and methoxyl content determinations were applied to decomposing leaf litter of Ginkgo biloba L., Cinnamomum camphora sieb., Zelkova serrata Makino and Firmiana simplex W. F. Wight, respectively, during mulching to investigate the properties and estimate changes in lignin comp...

journal_title：Phytochemistry

authors： Jin Z,Akiyama T,Chung BY,Matsumoto Y,Iiyama K,Watanabe S

更新日期：2003-11-01 00:00:00

abstract：:An in vitro aggregation of washed lutoid membrane and rubber particles, respectively, prepared from the bottom (lutoid) fraction and rubber layer of centrifuged fresh latex, leading to the formation of rubber coagulum necessary for a latex coagulation was demonstrated. A Triton X-100 extract of washed lutoid membrane ...

journal_title：Phytochemistry

authors： Wititsuwannakul R,Pasitkul P,Kanokwiroon K,Wititsuwannakul D

更新日期：2008-01-01 00:00:00

abstract：:A new sweet triterpene glycoside, periandrin V, was isolated from the roots of Periandra dulcis and identified as 3 beta-O-[beta-D-xylopyranosyl-(1-->2)-beta-D-glucuronopyranosyl]-25 -al-olean-18(19)-en-30-oic acid on the basis of chemical and spectral evidence. The structure of an acid-rearranged product of periandri...

journal_title：Phytochemistry

authors： Suttisri R,Chung MS,Kinghorn AD,Sticher O,Hashimoto Y

更新日期：1993-09-01 00:00:00

abstract：:The effects of UVB radiation on plant growth rate, gene expression and flavonoid content in wild-type, and in transgenic and mutant F3'H deficient Petunia lines have been studied for the first time. In wild-type Petunia, UVB induced an increase in total levels of flavonols and this was due to an up-regulation of sever...

journal_title：Phytochemistry

authors： Ryan KG,Swinny EE,Markham KR,Winefield C

更新日期：2002-01-01 00:00:00

abstract：:The tetrahydroanthraquinones (1S,3S)-austrocortilutein (4) and (1S,3S)-austrocortirubin (7) are octaketides formed in the fruit bodies of the fungus Dermocybe splendida via the gentiobioside 2 of the dihydroanthracenone (S)-torosachrysone (1). ...

journal_title：Phytochemistry

authors： Elsworth C,Gill M,Saubern S

更新日期：2000-09-01 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

authors： Rouf AS,Ozaki Y,Rashid MA,Rui J

更新日期：2001-04-01 00:00:00

abstract：:Eight pairs of meroterpenoid enantiomers and four achiral meroterpenoids were isolated from Rhododendron anthopogonoides Maxim. Seventeen of them, named (+)-/(-)-anthoponoids A-G, (+)-daurichromene D, and anthoponoids H and I, are undescribed compounds with structural diversity. Their structures were characterized her...

journal_title：Phytochemistry

authors： Shi Q,Li TT,Wu YM,Sun XY,Lei C,Li JY,Hou AJ

更新日期：2020-12-01 00:00:00

abstract：:Leaf sheath cuticular waxes on wild-type Sorghum bicolor were approximately 96% free fatty acids, with the C28 and C30 acids being 77 and 20% of these acids, respectively. Twelve mutants with markedly reduced wax load were characterized for chemical composition. In all of the 12 mutants, reduction in the amount of C28...

journal_title：Phytochemistry

authors： Jenks MA,Rich PJ,Rhodes D,Ashwort EN,Axtell JD,Din CK

更新日期：2000-07-01 00:00:00

abstract：:A study of wheat (Triticum aestivum L.) leaves phenolome was carried out during cold acclimation of the winter (Claire) and spring (Bounty) varieties using a combination of HPLC-ESI-MS techniques. A total of 40 phenolic and flavonoid compounds were identified, and consisted mainly of two coumarin derivatives, eight si...

journal_title：Phytochemistry

authors： Moheb A,Ibrahim RK,Roy R,Sarhan F

更新日期：2011-12-01 00:00:00

abstract：:The botanical classification of the huge genus Drosera remains controversial since long. In the present study, the pattern of major phenolic compounds in ten Drosera species belonging to seven different subgenera and/or sections of the genus was investigated for chemotaxonomic allocation. The composition of flavonoids...

journal_title：Phytochemistry

authors： Braunberger C,Zehl M,Conrad J,Wawrosch C,Strohbach J,Beifuss U,Krenn L

更新日期：2015-10-01 00:00:00

abstract：:Plant defensive serine proteinase inhibitors (PIs) are known to have negative impact on digestive physiology of herbivore insects and thus have a crucial role in plant protection. Here, we have assessed the efficacy and specificity of three previously characterized inhibitory repeat domain (IRD) variants from Capsicum...

journal_title：Phytochemistry

authors： Joshi RS,Gupta VS,Giri AP

更新日期：2014-05-01 00:00:00

abstract：:Changes in specialized metabolites were analyzed in wheat leaves inoculated with Bipolaris sorokiniana, the causal agent of spot blotch of Poaceae species. HPLC analysis detected the accumulation of six compounds in B. sorokiniana-infected leaves. Of these, we purified two compounds by silica gel and ODS column chroma...

journal_title：Phytochemistry

authors： Ube N,Harada D,Katsuyama Y,Osaki-Oka K,Tonooka T,Ueno K,Taketa S,Ishihara A

更新日期：2019-11-01 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

authors： Yang Z,Chen Q,Hu L

更新日期：2007-07-01 00:00:00