Bromoallenic lipid compounds from lichens of central Asia.

abstract：:Chemical investigation of the traditional Chinese medicine, Murraya kwangsiensis, led to the isolation of 16 undescribed biscarbazole alkaloids, kwangsines A-M, two undescribed natural products, (+/-)-bispyrayafoline C, and 19 known monomeric analogues. (±)-Bispyrayafoline C and (±)-kwangsines A-C are four pairs of bi...

journal_title：Phytochemistry

authors： Chen Y,Cao N,Lv H,Zeng K,Yuan J,Guo X,Zhao M,Tu P,Jiang Y

更新日期：2020-02-01 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

authors： Liu L,Zhu XM,Wang QJ,Zhang DL,Fang ZM,Wang CY,Wang Z,Sun BS,Wu H,Sung CK

更新日期：2010-09-01 00:00:00

abstract：:The adverse effect of glucosinolates on diverse phytophagous insects is well documented, but its impact on insect physiology has remained enigmatic. Here we report insights into detrimental effects of plant glucosinolate molecule, sinigrin, on Helicoverpa armigera growth and development. In-silico screening of multipl...

journal_title：Phytochemistry

authors： Agnihotri AR,Hulagabali CV,Adhav AS,Joshi RS

更新日期：2018-01-01 00:00:00

abstract：:Fractionation of an HIV-inhibitory organic extract of Geniostoma antherotrichum afforded a glycoside derivative, which has been characterized as 2-hydroxy-3-O-beta-D-glucopyranosyl-benzoic acid (1) on the basis of spectral analyses. The HIV-inhibitory activity of the extract was traced to polymeric tannins, while 1 wa...

journal_title：Phytochemistry

authors： Rashid MA,Gustafson KR,Cardellina JH 2nd,Boyd MR

更新日期：1996-03-01 00:00:00

abstract：:The biosynthetic origin of 9-phenylphenalenones and the sequence according to which their oxygen functionalities are introduced were studied using nuclear magnetic resonance (NMR) spectroscopy and high-resolution electrospray ionization mass spectrometry (HRESIMS). (13)C-labelled precursors were administered to root c...

journal_title：Phytochemistry

authors： Munde T,Maddula RK,Svatos A,Schneider B

更新日期：2011-01-01 00:00:00

abstract：:The biotransformation of 7alpha-hydroxy-ent-kaur-16-ene (epi-candol A) by the fungus Gibberella fujikuroi gave 7alpha,16alpha,17-trihydroxy-ent-kaur-16-ene and a seco-ring B derivative, fujenoic acid, whilst the incubation of candicandiol (7alpha,18-dihydroxy-ent-kaur-16-ene) and canditriol (7alpha,15alpha,18-trihydro...

journal_title：Phytochemistry

authors： Fraga BM,Bressa C,González P,Guillermo R,Hernández MG,Suárez S

更新日期：2007-06-01 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

authors： Bhatia A,Bharti SK,Tewari SK,Sidhu OP,Roy R

更新日期：2013-09-01 00:00:00

abstract：:While a long shelf life for fruit products is highly desired, enzymatic browning is the main cause of quality loss in fruits and is therefore a main problem for the food industry. In this study polyphenol oxidase (PPO), the main enzyme responsible for browning was isolated from mamey fruit (Pouteria sapota) and charac...

journal_title：Phytochemistry

authors： Palma-Orozco G,Ortiz-Moreno A,Dorantes-Alvarez L,Sampedro JG,Nájera H

更新日期：2011-01-01 00:00:00

abstract：:Extracts from the lignifying xylem of Sitka spruce that were enriched in cell-wall-associated glycoproteins contained peroxidase and oxidase activity and readily formed lignin-like water-insoluble dehydrogenation polymers (DHPs) from coniferyl alcohol (CA) when supplied with H2O2. During the formation of DHPs, the abu...

journal_title：Phytochemistry

authors： McDougall GJ

更新日期：2001-05-01 00:00:00

abstract：:Three neogrifolin derivatives, 3-hydroxyneogrifolin, 1-formylneogrifolin and 1-formyl-3-hydroxyneogrifolin along with grifolin and neogrifolin were isolated from the Japanese mushroom Albatrellus ovinus belonging to Scutigeraceae. Their structures were established by a combination of two-dimensional NMR spectroscopic ...

journal_title：Phytochemistry

authors： Nukata M,Hashimoto T,Yamamoto I,Iwasaki N,Tanaka M,Asakawa Y

更新日期：2002-04-01 00:00:00

abstract：:Non-targeted LC-MS metabolomics on fruit of three wild and domesticated apple species (Malus sylvestris, M. sieversii and M. domestica) showed that two crab apple (M. sylvestris) accessions were distinguished by high concentrations of an ascorbic acid glycoside (AAG). This was partly purified, but key NMR signals were...

journal_title：Phytochemistry

authors： Richardson AT,Cho J,McGhie TK,Larsen DS,Schaffer RJ,Espley RV,Perry NB

更新日期：2020-05-01 00:00:00

abstract：:Three-day-old soybean (Glycine max) seedlings were exposed to 0.4 M sorbitol solution for 4 h to induce amidinotransferase activity, with the corresponding enzyme being purified to homogeneity by chromatographic separation on DEAE-Sephacel, Sephacryl S-300 and L-arginine Sepharose 4B. The purified enzyme used L-argini...

journal_title：Phytochemistry

authors： Lee GT,Kim WJ,Cho YD

更新日期：2002-12-01 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

authors： Waffo-Téguo P,Voutquenne L,Thoison O,Dumontet V,Nguyen VH,Lavaud C

更新日期：2004-03-01 00:00:00

abstract：:A lipophilic extract of the root bark of Stereospermum kunthianum revealed antiplasmodial activity in vitro. Bioassay-guided fractionation led to the isolation of four novel naphthoquinones (sterekunthals A and B, pyranokunthones A and B) and one novel anthraquinone (anthrakunthone) together with the known naphthoquin...

journal_title：Phytochemistry

authors： Onegi B,Kraft C,Köhler I,Freund M,Jenett-Siems K,Siems K,Beyer G,Melzig MF,Bienzle U,Eich E

更新日期：2002-05-01 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 protein phosphatase (WbPP) has been purified from the soluble fraction of the winged bean (Psophocarpus tetragonolobus) shoot extract. The preparation is essentially homogenous as shown by the constant specific activity of the enzyme across the peak fractions, eluted from the thiophosphorylated histone-Sepharose aff...

journal_title：Phytochemistry

authors： Ganguly S,Singh M

更新日期：1999-09-01 00:00:00

abstract：:The chemical structures, syntheses, metabolism and biological activities of the cruciferous phytoalexins discovered to date, with particular focus on the latest results dealing with their biosynthesis and detoxification are reviewed. ...

journal_title：Phytochemistry

authors： Pedras MS,Yaya EE

更新日期：2010-08-01 00:00:00

abstract：:A new highly oxygenated triterpene named ganoderic acid alpha has been isolated from a methanol extract of the fruiting bodies of Ganoderma lucidum together with twelve known compounds. The structures of the isolated compounds were determined by spectroscopic means including 2D-NMR. Ganoderiol F and ganodermanontriol ...

journal_title：Phytochemistry

authors： el-Mekkawy S,Meselhy MR,Nakamura N,Tezuka Y,Hattori M,Kakiuchi N,Shimotohno K,Kawahata T,Otake T

更新日期：1998-11-01 00:00:00

abstract：:Fibrillins (FBNs) constitute a plastid-lipid-associated protein family that plays a role in chloroplast development, lipids metabolism and stress responses in plants. Until now, FBNs have been functionally characterized in stability of thylakoid and responses to the different stress stimuli. Consequently, phylogeny, d...

journal_title：Phytochemistry

authors： Li J,Li X,Khatab AA,Xie G

更新日期：2020-07-01 00:00:00

abstract：:The flavonoid profiles of two monotypic genera, Teucridium and Tripora, have been studied by analytical methods. These genera were formerly placed in the Verbenaceae, but are now classified in the Lamiaceae, subfamily Ajugoideae. The major flavonoids of both genera were identified as glycosides of scutellarein 4'-meth...

journal_title：Phytochemistry

authors： Grayer RJ,Veitch NC,Kite GC,Paton AJ,Garnock-Jones PJ

更新日期：2002-08-01 00:00:00

abstract：:The major component (35-65%) of the volatile oil obtained by steam distillation of the leaves of Melaleuca triumphalis has been identified as (rel)-1beta-pentyl-1alpha,6alpha-dihydroxy-3,3,5,5-tetramethylcyclohexa-2,4-dione (trivial name triumphalone). Relative stereochemistry was established by nuclear Overhauser exp...

journal_title：Phytochemistry

authors： Brophy JJ,Craig DC,Goldsack RJ,Fookes CJ,Leach DN,Waterman PG

更新日期：2006-09-01 00:00:00

abstract：:A new guaiane sesquiterpenoid glycoside together with known sesquiterpenoids and iridoid glycosides have been isolated from the rhizomes and roots of Valeriana fauriei. The 13C NMR assignments of the isolated compounds are presented. ...

journal_title：Phytochemistry

authors： Nishiya K,Kimura T,Takeya K,Itokawa H

更新日期：1992-10-01 00:00:00

abstract：:Dietary intake of proanthocyanidins (PAs) has been largely unknown because of the lack of reliable values for their content in foods. Recent development of an analytical method for PAs has allowed the quantification of individual oligomers and polymers. This method has been employed to analyze food samples collected u...

journal_title：Phytochemistry

authors： Prior RL,Gu L

更新日期：2005-09-01 00:00:00

abstract：:The effects of sewage sludges were investigated on the symbiotic interactions between the model plant Medicago truncatula and the arbuscular mycorrhizal fungus Glomus mosseae or the rhizobial bacteria Sinorhizobium meliloti. By comparison to a control sludge showing positive effects on plant growth and root symbioses,...

journal_title：Phytochemistry

authors： Bestel-Corre G,Gianinazzi S,Dumas-Gaudot E

更新日期：2004-06-01 00:00:00

abstract：:The genuine major benzylisoquinoline alkaloid occurring in the traditional medicinal plant greater celandine (Chelidonium majus L.) is 13,14-dihydrocoptisine and not - as described previously - coptisine. Structure of 13,14-dihydrocoptisine was elucidated. The discrepancy between the alkaloid pattern of the living pla...

journal_title：Phytochemistry

authors： Paulsen J,Yahyazadeh M,Hänsel S,Kleinwächter M,Ibrom K,Selmar D

更新日期：2015-03-01 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

abstract：:The kaempferol derivative 3,7-di-O-methyl-4'-O-beta-[alpha rhamnosyl (1 --> 6)]-glucopyranoside (siparunoside) was isolated from the leaves of Sparuna apiosyce. Its structure was established by extensive NMR studies. The alkaloids reticuline and liriodenine were also isolated from the leaves along with the kaempferol ...

journal_title：Phytochemistry

authors： Leitão GG,Soares SS,Brito TD,Delle Monache F

更新日期：2000-11-01 00:00:00

abstract：:Abscisic acid (ABA) has been implicated as a mediator in plant responses to various environmental stresses. To evaluate the transcriptional and metabolic events downstream of ABA perception, Arabidopsis thaliana seedlings were analyzed by transcript and metabolite profiling, and results were integrated, using the rece...

journal_title：Phytochemistry

authors： Ghassemian M,Lutes J,Chang HS,Lange I,Chen W,Zhu T,Wang X,Lange BM

更新日期：2008-12-01 00:00:00

abstract：:In continuation of our phytochemical studies on Caryopteris x clandonensis (Lamiaceae), three further iridoids were isolated from the methanolic extract of the stems. Their structures were established by 1D and 2D NMR and MS analysis as a C-6 epimer of 8-O-acetylharpagide (6-epi-8-O-acetylharpagide), a derivative of h...

journal_title：Phytochemistry

authors： Hannedouche S,Stanislas E,Moulis C,Fourasté I

更新日期：2000-08-01 00:00:00

abstract：:Three saponins, including two dimeric triterpenoid glucosides possessing an unusual skeleton, ivorenosides A and B, and a monomeric triterpenoid saponin (ivorenoside C), together with the known sericoside, were isolated from the bark of Terminalia ivorensis. Their structures were established on the basis of 1D and 2D ...

journal_title：Phytochemistry

authors： Ponou BK,Teponno RB,Ricciutelli M,Quassinti L,Bramucci M,Lupidi G,Barboni L,Tapondjou LA

更新日期：2010-12-01 00:00:00