Characterisation of triterpenes and new phenolic lipids in Cameroonian propolis.

abstract：:Two bromophenols, together with three known compounds, were isolated from the methanolic extract of the marine alga, Rhodomela confervoides. By means of MS and NMR spectroscopic analyses, they were identified as 3-bromo-4-[2,3-dibromo-4,5-dihydroxyphenyl] methyl-5-(hydroxymethyl) 1,2-benzenediol (1) and 3-bromo-4-[2,3...

journal_title：Phytochemistry

authors： Xu N,Fan X,Yan X,Li X,Niu R,Tseng CK

更新日期：2003-04-01 00:00:00

abstract：:The essential oils isolated from leaves of ten and from unripe berries of eight populations of Laurus azorica (Seub.) Franco, collected on five islands of the Azorean archipelago, were analysed by GC and GC-MS. All oil samples were dominated by their monoterpene fraction (60-94%), alpha-pinene (15-37%) and 1,8-cineole...

journal_title：Phytochemistry

authors： Pedro LG,Santos PA,da Silva JA,Figueiredo AC,Barroso JG,Deans SG,Looman A,Scheffer JJ

更新日期：2001-05-01 00:00:00

abstract：:The distribution and biosynthesis of iridoid glucosides in the Oleaceae is reviewed and five distinct biosynthetic pathways to iridoids have been identified in the family, deoxyloganic acid apparently being a common intermediate. Likewise, the distributions of caffeoyl phenylethanoid glycosides (CPGs), i.e. verbascosi...

journal_title：Phytochemistry

authors： Jensen SR,Franzyk H,Wallander E

更新日期：2002-06-01 00:00:00

abstract：:A bioassay-guided fractionation of Agave offoyana leaves led to the isolation of five steroidal saponins (1-5) along with six known saponins (6-11). The compounds were identified as (25R)-spirost-5-en-2α,3β-diol-12-one 3-O-{α-l-rhamnopyranosyl-(1→3)-O-β-d-glucopyranosyl-(1→2)-O-[β-d-xylopyranosyl-(1→3)]-O-β-d-glucopyr...

journal_title：Phytochemistry

authors： Pérez AJ,Simonet AM,Calle JM,Pecio Ł,Guerra JO,Stochmal A,Macías FA

更新日期：2014-09-01 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

authors： Herrmann A,Burman R,Mylne JS,Karlsson G,Gullbo J,Craik DJ,Clark RJ,Göransson U

更新日期：2008-02-01 00:00:00

abstract：:Procyanidins are plant secondary metabolites widely consumed and known to have various physiological functions, but their bioavailability and mechanism of action are still unclear especially for larger oligomers. One of the reasons is scarce information about the detailed structure of oligomeric procyanidins. As for a...

journal_title：Phytochemistry

authors： Nakashima S,Oda C,Masuda S,Tagashira M,Kanda T

更新日期：2012-11-01 00:00:00

abstract：:Carotenoid biosynthesis was examined in a phylloplane yeast identified by ITS, 18S and 28S rDNA analysis as a Dioszegia sp. close to D. takashimae. In well-aerated flask or fermentor cultures, this strain produced essentially a single pigment confirmed as the xanthophyll plectaniaxanthin by NMR analysis, at concentrat...

journal_title：Phytochemistry

authors： Madhour A,Anke H,Mucci A,Davoli P,Weber RW

更新日期：2005-11-01 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

authors： Al-Harrasi A,Khan A,Rehman NU,Al-Shidhani S,Karim N,Khan I,Halim SA,Al-Rawahi A,Hussain J,Csuk R

更新日期：2019-07-01 00:00:00

abstract：:Cassane diterpenoids: pulcherrin A, pulcherrin B, pulcherrin C, neocaesalpin P, neocaesalpin Q and neocaesalpin R, together with eight known compounds: isovouacapenol C, 6beta-cinnamoyl-7beta-hydroxy-vouacapen-5alpha-ol, pulcherrimin E, pulcherrimin C, alpha-cadinol, 7-hydroxycadalene, teucladiol and bonducellin were ...

journal_title：Phytochemistry

authors： Pranithanchai W,Karalai C,Ponglimanont C,Subhadhirasakul S,Chantrapromma K

更新日期：2009-01-01 00:00:00

abstract：:Investigations of the stem and root bark of Myrica arborea (Myricaceae) have yielded two novel diarylheptanoids, myricarborin and 11-O-beta-D-xylopyranosylmyricanol along with the known myricanol and 5-O-beta-D-glucopyranosylmyricanol. The structures of the novel compounds were determined by spectroscopic methods. ...

journal_title：Phytochemistry

authors： Tene M,Wabo HK,Kamnaing P,Tsopmo A,Tane P,Ayafor JF,Sterner O

更新日期：2000-08-01 00:00:00

abstract：:Activity guided fractionations led to the isolation of two antitumor compounds 5 alpha,8 alpha-epidioxy-24(R)-methylcholesta-6,22-dien-3 beta-D-glucopyranoside and 5,6-epoxy-24(R)-methylcholesta-7,22-dien-3 beta-ol from the methanol extract of Cordyceps sinensis. Two previously known compounds, ergosteryl-3-O-beta-D-g...

journal_title：Phytochemistry

authors： Bok JW,Lermer L,Chilton J,Klingeman HG,Towers GH

更新日期：1999-08-01 00:00:00

abstract：:Acylation is a prevalent chemical modification that to a significant extent accounts for the tremendous diversity of plant metabolites. To catalyze acyl transfer reactions, higher plants have evolved acyltransferases that accept beta-acetal esters, typically 1-O-glucose esters, as an alternative to the ubiquitously oc...

journal_title：Phytochemistry

authors： Stehle F,Brandt W,Stubbs MT,Milkowski C,Strack D

更新日期：2009-10-01 00:00:00

abstract：:Diterpene esters of the phorbol and ingenol types are known to be highly active tumor promoting agents that typically occur in members of the Euphorbiaceae. In the present work, Euphorbia leuconeura, a rare indoor plant, is analyzed for its tumor promoting potential. Latex as well as total leaf extracts exhibited Epst...

journal_title：Phytochemistry

authors： Vogg G,Mattes E,Rothenburger J,Hertkorn N,Achatz S,Sandermann H Jr

更新日期：1999-05-01 00:00:00

abstract：:Two new long chain alkyl p-coumaric acid esters (2-3) along with eicosanyl trans-p-coumarate (1) were isolated from chloroform extract of the roots of Tanacetum longifolium. The structures of new compounds were assigned as 21'-hydroxyheneicosanyl-4-hydroxy-(cis and trans) p-coumarate (2a, 2b) and 27'-hydroxy heptacosa...

journal_title：Phytochemistry

authors： Mahmood U,Kaul VK,Acharya R,Jirovetz L

更新日期：2003-10-01 00:00:00

abstract：:Leaves, stem bark and root of Lonchocarpus xuul and Lonchocarpus yucatanensis were studied separately. A chalcone, 2',4-dimethoxy-6'-hydroxylonchocarpin (), and the flavones 5,4'-dihydroxy-3'-methoxy-(6:7)-2,2-dimethylpyranoflavone (2) and 5,4'-dimethoxy-(6:7)-2,2-dimethylpyrano-flavone (3), together with the known ca...

journal_title：Phytochemistry

authors： Borges-Argáez R,Peña-Rodríguez LM,Waterman PG

更新日期：2002-07-01 00:00:00

abstract：:Salvia is the largest genus of the Lamiaceae family, with over 900 species in the world which about 60 species are distributed in Iran, 17 of them are endemic. In Iran, Salvia species have been used to treat various diseases with a wide spectrum of pharmacological activity in vitro and in vivo. The present review summ...

journal_title：Phytochemistry

authors： Askari SF,Avan R,Tayarani-Najaran Z,Sahebkar A,Eghbali S

更新日期：2020-12-26 00:00:00

abstract：:Four cycloartane-type saponins, kahiricosides II-V (1-4), were isolated from the aerial parts of Astragalus kahiricus of Egyptian origin. Their structures were established as 9beta,19-cyclolanost-24E-ene-3beta,6alpha,16beta,27-tetraol-3-O-beta-D-glucopyranoside, 9beta,19-cyclolanost-24E-ene-3beta,6alpha,16beta,27-tetr...

journal_title：Phytochemistry

authors： Radwan MM,El-Sebakhy NA,Asaad AM,Toaima SM,Kingston DG

更新日期：2004-11-01 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

authors： Williams DJ,Critchley C,Pun S,Chaliha M,O'Hare TJ

更新日期：2009-07-01 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

authors： Eckermann C,Matthes B,Nimtz M,Reiser V,Lederer B,Böger P,Schröder J

更新日期：2003-11-01 00:00:00

abstract：:Biotransformation of 20(S)-protopanaxatriol (1) by the fungus Mucor spinosus AS 3.3450 gave 10 metabolites (2-10), of which 2-5 were previously known. On the basis of NMR and MS analyses, structures 6-10 were established as 12-oxo-23beta-hydroxyl-20(S)-protopanaxatriol (6), 20S,24R-epoxy-dammaran-3beta,6alpha,25-triol...

journal_title：Phytochemistry

authors： Zhang J,Guo H,Tian Y,Liu P,Li N,Zhou J,Guo D

更新日期：2007-10-01 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：:Coumarins exhibit many biological activities and are the main specialised metabolites of Peucedanum praeruptorum Dunn, an important plant used in traditional Chinese medicine. In preliminary studies, we cloned several genes involved in coumarin biosynthesis in P. praeruptorum, such as 4-coumarate: CoA ligase (4CL), p-...

journal_title：Phytochemistry

authors： Sui Z,Luo J,Yao R,Huang C,Zhao Y,Kong L

更新日期：2019-02-01 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

authors： Olsen CE,Huang XC,Hansen CIC,Cipollini D,Ørgaard M,Matthes A,Geu-Flores F,Koch MA,Agerbirk N

更新日期：2016-12-01 00:00:00

abstract：:The first seco-uleine alkaloids, manilamine (1) (18-hydroxy-19,20-dehydro-7,21-seco-uleine) and N4-methyl angustilobine B (2), were isolated from the (pH 5) alkaloid extract of Philippine Alstonia scholaris leaves together with the known indole alkaloids 19,20-(E)-vallesamine (3), angustilobine B N4-oxide (4), 20(S)-t...

journal_title：Phytochemistry

authors： Macabeo AP,Krohn K,Gehle D,Read RW,Brophy JJ,Cordell GA,Franzblau SG,Aguinaldo AM

更新日期：2005-05-01 00:00:00

abstract：:Unlike most Nicotiana species, leaf tissues of the globally significant weed Nicotiana glauca Grah. (Argentinian tree tobacco) contains anabasine as the main component of its alkaloid pool, with concentrations typically increasing several fold in response to wounding of plants. The Δ(1)-piperidinium ring of anabasine ...

journal_title：Phytochemistry

authors： DeBoer KD,Dalton HL,Edward FJ,Ryan SM,Hamill JD

更新日期：2013-02-01 00:00:00

abstract：:The ether extract of the Chilean liverwort Lepicolea ochroleuca yielded three sesquiterpenoids, ent-4 beta-Hydroxy-10 alpha-methoxyaromadendrane, ent-3 beta-Hydroxyspathulenol, and 1,10-Dioxotayloriane, as minor components. The major components were ledol and 13-epi-neoverrucosan-5 beta-ol, four other minor fusicoccan...

journal_title：Phytochemistry

authors： Liu HJ,Wu CL,Becker H,Zapp J

更新日期：2000-04-01 00:00:00

abstract：:A benzil, calophione A, 1-(6'-Hydroxy-1',3'-benzodioxol-5'-yl)-2-(6''-hydroxy-2''-isopropenyl-2'',3''-dihydro-benzofuran-5''-yl)-ethane-1,2-dione and three coumestan derivatives, tephcalostan B, C and D were isolated from the roots of Tephrosia calophylla. Their structures were deduced from spectroscopic data, includi...

journal_title：Phytochemistry

authors： Ganapaty S,Srilakshmi GV,Pannakal ST,Rahman H,Laatsch H,Brun R

更新日期：2009-01-01 00:00:00

abstract：:Human kidney-type glutaminase (KGA) is an important target that is often over expressed in many cancer cells but very few effective inhibitors of this enzyme have yet reached clinical trials. Caudatan A and caudatan B, two undescribed tetracyclic flavans with an unusual ether bond between the C-4 and C-2' were isolate...

journal_title：Phytochemistry

authors： Sun Y,Feng X,Liu X,Qian C,Che X,Cao F,Jin S,Meng D

更新日期：2018-08-01 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

authors： Zandleven J,Sørensen SO,Harholt J,Beldman G,Schols HA,Scheller HV,Voragen AJ

更新日期：2007-04-01 00:00:00

abstract：:The dichloromethane extract from leaves of Juniperus brevifolia, through chromatographic fractionations yield six compounds: 3beta-hydroxy-abieta-8,11,13-trien-7-one, 18-hydroxy-sandaracopimara-8(14),15-dien-7-one, sandaracopimara-8(14),15-dien-18-yl formate; and the first examples of sandaracopimaranes and abieta-8,1...

journal_title：Phytochemistry

authors： Seca AM,Silva AM,Bazzocchi IL,Jimenez IA

更新日期：2008-01-01 00:00:00