Antifungal highly oxygenated guaianolides and other constituents from Ajania fruticulosa.

abstract：:Examination of the bulbs of Bessera elegans (Liliaceae) led to isolation of nine new and five known steroidal glycosides. The structures of the nine compounds were determined based on the results of spectroscopic analysis, including two-dimensional NMR, and hydrolysis followed by chromatographic and spectroscopic anal...

journal_title：Phytochemistry

authors： Matsuo Y,Akagi N,Hashimoto C,Tachikawa F,Mimaki Y

更新日期：2013-12-01 00:00:00

abstract：:Cyanogenic glucosides are phytoanticipins known to be present in more than 2500 plant species. They are considered to have an important role in plant defense against herbivores due to bitter taste and release of toxic hydrogen cyanide upon tissue disruption. Some specialized herbivores, especially insects, preferentia...

journal_title：Phytochemistry

authors： Zagrobelny M,Bak S,Rasmussen AV,Jørgensen B,Naumann CM,Lindberg Møller B

更新日期：2004-02-01 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：:A single-chain variable antibody fragment (scFv) library tested against the non-structural NSP5 protein of human rotavirus A was screened by a yeast two-hybrid system against three proteins derived from the RNA-dependent RNA polymerase (RdRp) of cucumber mosaic virus (CMV), with the aim of blocking their function and ...

journal_title：Phytochemistry

authors： Matić S,Noris E,Contin R,Marian D,Thompson JR

更新日期：2019-06-01 00:00:00

abstract：:Four flavonoids with 2',4'-di-oxygenated B-rings, cochinchinol A (1), cochinchinol B (2), (2R,3R)-4',7-dihydroxy-2',5-dimethoxydihydroflavonol (3), 4',7-dihydroxy-2',5-dimethoxyflavonol (4), along with 11 known compounds, were isolated from an ethanolic extract of the roots of Cudrania cochinchinensis. Their structure...

journal_title：Phytochemistry

authors： Zhang P,Feng Z,Wang Y

更新日期：2005-12-01 00:00:00

abstract：:From the branches of Microtropis japonica (Celastraceae), nine aliphatic glucosides, named microtropins A-I, were isolated. The 6-position of glucose was esterified with (2S,3R)-2-ethyl-2,3-dihydroxybutyric acid. Microtropins A-D contained a rare natured product nitrile functional group in their aglycones. The absolut...

journal_title：Phytochemistry

authors： Uemura Y,Sugimoto S,Matsunami K,Otsuka H,Takeda Y,Kawahata M,Yamaguchi K

更新日期：2013-03-01 00:00:00

abstract：:Ginseng occupies a prominent position in the list of best-selling natural products in the world. Compared to the long history of use and widespread research on Asian ginseng, the study of American ginseng is relatively limited. In the past decade, some promising advances have been achieved in understanding the chemist...

journal_title：Phytochemistry

authors： Qi LW,Wang CZ,Yuan CS

更新日期：2011-06-01 00:00:00

abstract：:Although the mechanism of accumulation of C8-C16 saturated fatty acids in seed oils has been well-studied, the control of stearic (C18:0) acid deposition in high stearate seed fat is still unclear. We investigated the mechanism that regulates high level of stearate and oleate (C18:1) accumulation in mango (Mangifera i...

journal_title：Phytochemistry

authors： Bhattacharjee A,Ghosh SK,Neogi K,Aich A,Willard B,Kinter M,Sen SK,Ghosh D,Ghosh S

更新日期：2011-02-01 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：:Cultured cells of Eucalyptus perriniana biotransformed (+)-menthol to its gentiobioside and triglucoside [2,6-di-O-(beta-D-glucopyranosyl)-beta-D-glucopyranoside]. The structures of these compounds were determined by means of NMR techniques. ...

journal_title：Phytochemistry

authors： Orihara Y,Miyatake H,Furuya T

更新日期：1991-01-01 00:00:00

abstract：:Three novel 3 alpha-hydroxy-oleanane-type triterpene oligoglycosyl esters, spinoside C1, C4 and C5, were isolated from the leaves of Acanthopanax spinosus. The structures were established to be 28-O-alpha-L-rhamnopyranosyl(1-->4)-beta-D-glucopyranosyl (1-->6)-beta-D-glucopyranosyl esters of 3 alpha, 29-dihydroxy-olean...

journal_title：Phytochemistry

authors： Miyakoshi M,Ida Y,Isoda S,Shoji J

更新日期：1993-12-01 00:00:00

abstract：:Nine cycloartane triterpenoids, including two new derivatives 22,25-dihydroxy-cycloart-23E-en-3-one and 24-methylenecycloartane-3 beta,22-diol have been isolated from leaves of Guarea macrophylla. The structures were elucidated by interpretation of spectral data, mainly 1H and 13C NMR, including bidimensional analysis...

journal_title：Phytochemistry

authors： Lago JH,Roque NF

更新日期：2002-06-01 00:00:00

abstract：:Putrescine N-methyltransferase (PMT) catalyses S-adenosylmethionine (SAM) dependent methylation of the diamine putrescine. The product N-methylputrescine is the first specific metabolite on the route to nicotine, tropane, and nortropane alkaloids. PMT cDNA sequences were cloned from tobacco species and other Solanacea...

journal_title：Phytochemistry

authors： Biastoff S,Brandt W,Dräger B

更新日期：2009-10-01 00:00:00

abstract：:The dichloromethane extract of the wood of Carissa lanceolata R.Br. (Apocynaceae) afforded the eudesmanes carissone, dehydrocarissone and carindone. This is the first account of carissone being isolated from the wood of C. lanceolata, and of carindone being isolated from this Carissa species. Dehydrocarissone has not ...

journal_title：Phytochemistry

authors： Lindsay EA,Berry Y,Jamie JF,Bremner JB

更新日期：2000-11-01 00:00:00

abstract：:A high purity of β-D-glucan (80.8%) from hull-less barley (Hordeum vulgare L. var. nudum Hook. f.) (HBBG) was isolated by alkali extraction and multi-precipitation with ethanol. The molecular weight (Mw) of HBBG was determined as 571.4 kDa with a broad distribution (Mw/Mn = 1.6) by using HPSEC. According to methylatio...

journal_title：Phytochemistry

authors： Zhang H,Zhang N,Xiong Z,Wang G,Xia Y,Lai P,Ai L

更新日期：2018-11-01 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：: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

authors： Williams CA,Harborne JB,Newman M,Greenham J,Eagles J

更新日期：1997-12-01 00:00:00

abstract：:Eight sesquiterpenes, including four guaiane-types containing an interesting epoxy unit (1-4), a rare tricyclic carbon skeleton-type (5) and three eudesmane-types (6-8), along with five known compounds, were isolated from rhizomes of Atractylodes lancea. The structures and relative configurations of 1-8 were determine...

journal_title：Phytochemistry

authors： Wang HX,Liu CM,Liu Q,Gao K

更新日期：2008-07-01 00:00:00

abstract：:The twigs of Garcinia hombroniana yielded six compounds: two 17,14-friedolanostanes (garcihombronanes K-L, 1-2) and four xanthones (garcihombronones A-D, 3-6) together with 14 known compounds including four friedolanostanes, one lanostane, six xanthones, two benzoic acid derivatives and one biflavonoid. Their structur...

journal_title：Phytochemistry

authors： Klaiklay S,Sukpondma Y,Rukachaisirikul V,Phongpaichit S

更新日期：2013-01-01 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：: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：:Bioassay-guided fractionation of an extract prepared from the fruits of Cordia sebestena led to the isolation of sebestenoids A-D (1-4). Their structures were elucidated on the basis of extensive NMR experiments and mass spectroscopic measurements. Compounds 1-4 exhibited moderate inhibition of the aspartic protease B...

journal_title：Phytochemistry

authors： Dai J,Sorribas A,Yoshida WY,Williams PG

更新日期：2010-12-01 00:00:00

abstract：:Dried mosses (five moss species) were progressively extracted and subjected to a four-step Craig distribution. Seven pure flavonoids were isolated and identified. The flavonoids were the flavones apigenin, apigenin-7-O-triglycoside, lucenin-2, luteolin-7-O-neohesperidoside, saponarine and vitexin; and the biflavonoid ...

journal_title：Phytochemistry

authors： Basile A,Sorbo S,López-Sáez JA,Castaldo Cobianchi R

更新日期：2003-04-01 00:00:00

abstract：:Amaranthus hypochondriacus L. infected with Ageratum enation virus (AEV) was investigated for identifying alteration in the anatomical structures, sap translocation and metabolomic variations using light microscopy, magnetic resonance imaging, NMR spectroscopy and GC-MS, respectively. Combination of GC-MS and NMR spec...

journal_title：Phytochemistry

authors： Srivastava S,Bisht H,Sidhu OP,Srivastava A,Singh PC,Pandey RM,Raj SK,Roy R,Nautiyal CS

更新日期：2012-08-01 00:00:00

abstract：:A 13-membered N-formylcyclopeptide alkaloid, nummularine-T, has been isolated from the bark of Zizyphus nummularia and its structure established by spectroscopic and chemical methods. It provides the fourth example of a naturally occurring N-formyl cyclopeptide alkaloid. ...

journal_title：Phytochemistry

authors： Singh B,Pandey VB

更新日期：1995-01-01 00:00:00

abstract：:Crotaoprostrin, a chalcone not yet known as a plant constituent, was isolated from the aerial parts of the Indian medicinal plant Crotalaria prostrata. The structures of the chalcone polyarvin and the partially hydrogenated naturally occurring derivatives crotaramin, crotaramosmin, and crotin were confirmed by chemica...

journal_title：Phytochemistry

authors： Krohn K,Steingröver K,Srinivasa Rao M

更新日期：2002-12-01 00:00:00

abstract：:The glucosinolate content of various organs of the model plant Arabidopsis thaliana (L.) Heynh., Columbia (Col-0) ecotype, was analyzed at different stages during its life cycle. Significant differences were noted among organs in both glucosinolate concentration and composition. Dormant and germinating seeds had the h...

journal_title：Phytochemistry

authors： Brown PD,Tokuhisa JG,Reichelt M,Gershenzon J

更新日期：2003-02-01 00:00:00

abstract：:Two new flavone glucosides, nevadensin 5-O-beta-D-glucoside and nevadensin 5-O-beta-D-glucosyl(1-->6)beta-D-glucoside, have been isolated from the aerial parts of Lysionotus pauciflorus. The structures have been determined by means of UV, mass spectral and one- and two-dimensional 1H and 13C NMR techniques. ...

journal_title：Phytochemistry

authors： Liu Y,Wagner H,Bauer R

更新日期：1996-07-01 00:00:00

abstract：:From the roots of Silene jenisseensis a new trans-p-methoxycinnamoyl triterpene saponin has been isolated along with its cis-p-methoxycinnamoyl isomer as an inseparable mixture. Their structures were established by chemical means and spectroscopic methods including 1D- and 2D-homonuclear and heteronuclear correlation ...

journal_title：Phytochemistry

authors： Lacaille-Dubois MA,Hanquet B,Cui ZH,Lou ZC,Wagner H

更新日期：1995-09-01 00:00:00

abstract：:Schizolobium parahyba seed chymotrypsin inhibitor (SPC) is a protein with M(r) of 20,000 and four half-cystine residues and no free thiol group. SPC is stable at temperatures up to 75 degrees at pH 7 but gradually loses activity when kept at 95 degrees for 1 hr and total inactivation occurs after 5 hr. Amino acid anal...

journal_title：Phytochemistry

authors： Souza EM,Mizuta K,Sampaio MU,Sampaio CA

更新日期：1995-06-01 00:00:00