Phytochemical analysis and genetic characterization of six Hypericum species from Serbia.

abstract：:Three C-17 diacetylenic compounds (1-3), one monoterpenoid (4), seven ceramides (leucoceramides A-G, 5a-g), six cerebrosides (leucocerebrosides A-F, 6a-f) and nine known compounds were isolated from the methanolic extract of Hydrocotyle leucocephala. Their structures were established by spectroscopic methods. The isol...

journal_title：Phytochemistry

authors： Ramos F,Takaishi Y,Kawazoe K,Osorio C,Duque C,Acuña R,Fujimoto Y,Sato M,Okamoto M,Oshikawa T,Ahmed SU

更新日期：2006-06-01 00:00:00

abstract：:Four lactone diterpenes and two related glucosides with a labdane skeleton have been isolated from the aquatic plant Potamogeton natans. The structures of three new compounds were determined as 19-acetoxy-20-oxo-8(17),13-ent-labdadien-15-->16 lactone, 8(17), 13-ent-labdadien-15-->16,19-->20 dilactone and 6'-acetyl-19-...

journal_title：Phytochemistry

authors： Cangiano T,DellaGreca M,Fiorentino A,Isidori M,Monaco P,Zarrelli A

更新日期：2001-03-01 00:00:00

abstract：:Three novel polyoxypregnane glycosides, volubiloside A, B and C (1-3), were isolated from the flowers of Dregea volubilis Linn., and their structures were elucidated as drevogenin D-3-O-beta-D-glucopyranosyl (1-->4)-6-deoxy-3-O-methyl-beta-D-allopyranosyl (1-->4)-beta-D-cymaropyranosyl (1-->4)-beta-D-cymaropyranoside,...

journal_title：Phytochemistry

authors： Sahu N,Panda N,Mandal N,Banerjee S,Koike K,Nikaido T

更新日期：2002-10-01 00:00:00

abstract：:Seeds of 57 species of the genus Trifolium have been studied for the occurrence and concentration of soyasapogenol B glycosides and flavonoids. It was shown that all tested species contained soyasaponin I and in some species astragaloside VIII and/or 22-O-glucoside and 22-O-diglucoside of soyasaponin I were also prese...

journal_title：Phytochemistry

authors： Oleszek W,Stochmal A

更新日期：2002-09-01 00:00:00

abstract：:The results of a screening study, in which a total of 82 Finnish plant species were studied for their ellagitannin composition and content, are presented. The total ellagitannin content was determined by HPLC-DAD, the detected ellagitannins were further characterized by HPLC-ESI-QTOF-MS and divided into four structura...

journal_title：Phytochemistry

authors： Moilanen J,Koskinen P,Salminen JP

更新日期：2015-08-01 00:00:00

abstract：:A benzoquinone, named alopecuquinone, was isolated from the ethanol extract of the inflorescences of Cyperus alopecuroides. Its structure was primarily elucidated by spectroscopic analysis including 1H, 13C NMR, APT, HMQC, 1H-1H COSY and CIMS. The known flavonoids, vicenin 2, orientin, diosmetin, quercetin 3,3'-dimeth...

journal_title：Phytochemistry

authors： Nassar MI,Abdel-Razik AF,El-Khrisy Eel-D,Dawidar AA,Bystrom A,Mabry TJ

更新日期：2002-06-01 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：:Lycopodium serratene triterpenoids, along with an abietane-type diterpene were isolated from the methanol extract of club moss Lycopodium phlegmaria L. The structures of these hitherto unknown lycopodium terpenoids were elucidated on the basis of spectroscopic analysis. Pentacyclic triterpenoids, 21β-hydroxy-serrat-14...

journal_title：Phytochemistry

authors： Wittayalai S,Sathalalai S,Thorroad S,Worawittayanon P,Ruchirawat S,Thasana N

更新日期：2012-04-01 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

authors： Nasini G,Arnone A,Assante G,Bava A,Moricca S,Ragazzi A

更新日期：2004-07-01 00:00:00

abstract：:Two natural Diels-Alder type adducts, cathayanon A (1) and cathayanon B (2), resembling sanggenon C (4) and O (3), were isolated from the root bark of Morus cathayana. Their structures were elucidated on the basis of spectroscopic evidence. The structure of 1 was confirmed by the results of X-ray crystallographic anal...

journal_title：Phytochemistry

authors： Shen RC,Lin M

更新日期：2001-08-01 00:00:00

abstract：:The behavior of glutathione reductase (GR, EC 1.6.4.2) activity and isoforms were analyzed in wheat (Triticum aestivum L.) leaves and roots exposed to a chronic treatment with a toxic cadmium (Cd) concentration. A significant growth inhibition (up to 55%) was found in leaves at 7, 14 and 21 days, whereas roots were af...

journal_title：Phytochemistry

authors： Yannarelli GG,Fernández-Alvarez AJ,Santa-Cruz DM,Tomaro ML

更新日期：2007-02-01 00:00:00

abstract：:We investigated impacts of early and mild biotic stress on Biogenic Volatile Organic Compounds (BVOC) emissions from tomato in order to test their potential for early (biotic) stress detection. Tomato plants were exposed to two common fungal pathogens, Botrytis cinerea and Oidium neolycopesici and the sap-sucking aphi...

journal_title：Phytochemistry

authors： Kasal-Slavik T,Eschweiler J,Kleist E,Mumm R,Goldbach HE,Schouten A,Wildt J

更新日期：2017-12-01 00:00:00

abstract：:Twelve previously undescribed polyketide derivatives, heterocornols A-L, and seven known analogues were isolated from a culture of the fungus Pestalotiopsis heterocornis associated with sponge. Their structures were elucidated by a comprehensive spectroscopic data analysis and CD Cotton effects. These compounds were e...

journal_title：Phytochemistry

authors： Lei H,Lin X,Han L,Ma J,Dong K,Wang X,Zhong J,Mu Y,Liu Y,Huang X

更新日期：2017-10-01 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：:The major vacuolar flavonoid of a greenhouse-grown plant of Becium grandiflorum has been identified as the 8-O-glucoside of isothymusin (5,8,4'-trihydroxy-6,7-dimethoxyflavone), while the major external flavonoids in the diethyl ether surface wash of the same plant are found to be isothymusin and cirsimaritin (5,4'-di...

journal_title：Phytochemistry

authors： Grayer RJ,Veitch NC

更新日期：1998-03-01 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

authors： McIntosh C

更新日期：2012-03-16 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：:Telomeres are nucleoprotein structures ensuring the stability of eukaryotic chromosome ends. Two protein families, TRFL (TFL-Like) and SMH (Single-Myb-Histone), containing a specific telobox motif in their Myb domain, have been identified as potential candidates involved in a functional nucleoprotein structure analogo...

journal_title：Phytochemistry

authors： Mozgová I,Schrumpfová PP,Hofr C,Fajkus J

更新日期：2008-06-01 00:00:00

abstract：:The composition of two bromoallenic aliphatic fatty acids obtained from lichens collected around Lake Issyk-Kul (central Asia) is described. These compounds were identified by means of 1H and 13C NMR, MS and IR spectra. ...

journal_title：Phytochemistry

authors： Rezanka T,Dembitsky VM

更新日期：2001-04-01 00:00:00

abstract：:Four cucurbitacins, bacobitacin A-D (1-4) as well as, a known cytotoxic, cucurbitacin E (5) together with three known phenylethanoid glycosides, monnieraside I, III and plantioside B were isolated form the aerial part of Bacopa monnieri. Their structures were elucidated on the basis of extensive spectroscopic investig...

journal_title：Phytochemistry

authors： Bhandari P,Kumar N,Singh B,Kaul VK

更新日期：2007-05-01 00:00:00

abstract：:S-limonene synthase is a model monoterpene synthase that cyclizes geranyl pyrophosphate (GPP) to form S-limonene. It is a relatively specific enzyme as the majority of its products are composed of limonene. In this study, we converted it to pinene or phellandrene synthases after introducing N345A/L423A/S454A or N345I ...

journal_title：Phytochemistry

authors： Xu J,Ai Y,Wang J,Xu J,Zhang Y,Yang D

更新日期：2017-05-01 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：:Intra-specific diversity in Liularia vellerea growing in the northwestern to central Yunnan province of China was studied by chemical and genetic approaches. Samples collected in the Jianchuan, Lijiang, and Zhongdian areas contained 6,15-dioxygenated furanoeremophilanes as their major components (type A); whereas samp...

journal_title：Phytochemistry

authors： Tori M,Nakamizo H,Mihara K,Sato M,Okamoto Y,Nakashima K,Tanaka M,Saito Y,Sono M,Gong X,Shen Y,Hanai R,Kuroda C

更新日期：2008-03-01 00:00:00

abstract：:The concentration of 7-methyljuglone was studied in the round-leaved sundew Drosera rotundifolia L. collected from different regions in Northern Finland. Samples for analysis were collected from peat bogs and sandpit habitats. The mean concentration of 7-methyljuglone varied from 1.0 to 2.3% of dry weight. Variation b...

journal_title：Phytochemistry

authors： Kämäräinen T,Uusitalo J,Jalonen J,Laine K,Hohtola A

更新日期：2003-06-01 00:00:00

abstract：:A ring-cleaved sesquiterpene, named seco-laurokamurone, four laurane-type sesquiterpenes, laurepoxyene, 3β-hydroperoxyaplysin, 3α-hydroperoxy-3-epiaplysin, and 8,10-dibromoisoaplysin, one laurokamurane-type sesquiterpene, laurokamurene D, and one bisabolane-type sesquiterpene, (5S)-5-acetoxy-β-bisabolene, have been is...

journal_title：Phytochemistry

authors： Yu XQ,He WF,Liu DQ,Feng MT,Fang Y,Wang B,Feng LH,Guo YW,Mao SC

更新日期：2014-07-01 00:00:00

abstract：:The cuticle of higher plants functions primarily as a protective barrier for the leaves and fruits, controlling microbial attack as well as the diffusion of water and chemicals from the outside environment. Its major chemical constituents are waxes (for waterproofing) and cutin (a structural support polymer). However,...

journal_title：Phytochemistry

authors： Fang X,Qiu F,Yan B,Wang H,Mort AJ,Stark RE

更新日期：2001-07-01 00:00:00

abstract：:From the roots of various Stemona species four new dehydrotocopherols (chromenols) were isolated and their structures and stereochemistry elucidated by spectroscopic methods. The double bond between C-3 and C-4 proved to be a typical chemical character of the genus found in most of the species. Various C-methylations ...

journal_title：Phytochemistry

authors： Brem B,Seger C,Pacher T,Hartl M,Hadacek F,Hofer O,Vajrodaya S,Greger H

更新日期：2004-10-01 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

authors： Waterman PG

更新日期：2007-11-01 00:00:00

abstract：:Petunia hybrida and Citrus paradisi have significantly different flavonoid accumulation patterns. Petunia sp. tend to accumulate flavonol glycosides and anthocyanins while Citrus paradisi is known for its accumulation of flavanone diglycosides. One possible point of regulation of flavanone metabolism is flavanone 3-hy...

journal_title：Phytochemistry

authors： Pelt JL,Downes WA,Schoborg RV,McIntosh CA

更新日期：2003-09-01 00:00:00

abstract：:Five pregnane glycosides were isolated from Caralluma tuberculata (1-5), in addition to a known one (russelioside E, 6). The structures of the isolated compounds were elucidated by the analysis of NMR data and FAB-MS experiments. All the isolated compounds were tested for their antimalarial and antitrypanosomal activi...

journal_title：Phytochemistry

authors： Abdel-Sattar E,Harraz FM,Al-ansari SM,El-Mekkawy S,Ichino C,Kiyohara H,Ishiyama A,Otoguro K,Omura S,Yamada H

更新日期：2008-08-01 00:00:00