Diterpenes from the berries of Juniperus excelsa.

abstract：:Pinoresinol/lariciresinol reductase (PLR), an NADPH-dependent reductase that catalyzes the sequential reduction of pinoresinol into secoisolariciresinol via Lariciresinol, can lead to the structural and stereochemical diversity of lignans. The relationship between substrate-selective reaction of PLR and sequence homol...

journal_title：Phytochemistry

authors： Wu Y,Xing D,Ma G,Dai X,Gao L,Xia T

更新日期：2019-06-01 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：:The role and fate of Jasmonoyl-Phenylalanine (JA-Phe), an understudied conjugate in the jasmonate pathway remain to be unraveled. We addressed here the possibility of JA-Phe oxidative turnover by cytochrome P450s of the CYP94 family. Leaf wounding or fungal infection in Arabidopsis resulted in accumulation of JA-Phe, ...

journal_title：Phytochemistry

authors： Widemann E,Grausem B,Renault H,Pineau E,Heinrich C,Lugan R,Ullmann P,Miesch L,Aubert Y,Miesch M,Heitz T,Pinot F

更新日期：2015-09-01 00:00:00

abstract：:Highly specialized chemical defense pathways are a particularly noteworthy metabolic characteristic of sessile organisms, whether terrestrial or marine, providing protection against pests and diseases. For this reason, knowledge of the metabolites involved in these processes is crucial to producing ecologically fit cr...

journal_title：Phytochemistry

authors： Pedras MS,To QH

更新日期：2015-05-01 00:00:00

abstract：:Fractionation of a methanol extract obtained from rhizomes of I. spuria (Zeal) resulted in the isolation of seven iridalglycosides 5a,b, 6a-c, 7, 8. The structures of the aglycons and the position of the glycosidic bonds were elucidated by spectroscopic analyses. The nature of the sugar moieties was determined as gluc...

journal_title：Phytochemistry

authors： Marner FJ,Singab AN,Al-Azizi MM,El-Emary NA,Schäfer M

更新日期：2002-06-01 00:00:00

abstract：:Acid hydrolysis of cell wall-rich material from thalli of the hornwort Anthoceros caucasicus yielded substantial amounts of an unusual disaccharide (1). Hydrolysis of 1 yielded only GlcA, Gal and unhydrolysed 1. Compound 1 was identified as alpha-D-GlcpA-(1-->3)-L-Gal by 1H and 13C NMR spectroscopic analysis and by th...

journal_title：Phytochemistry

authors： Popper ZA,Sadler IH,Fry SC

更新日期：2003-09-01 00:00:00

abstract：:Three bufadienolides, hellebortin A (5-[beta-D-glucopyranosyloxy]-10,14,16-trihydroxy-19-nor-[5beta,10beta,14beta,16beta]-bufa-3,20,22-trienolide [1]), hellebortin B (5-[beta-D-glucopyranosyloxy]-3,4-epoxy-14-hydroxy-19-oxo-bufa-20,22-dienolide [2]) and hellebortin C (5-[beta-D-glucopyranosyloxy]-3,4-epoxy-10,14-dihyd...

journal_title：Phytochemistry

authors： Meng Y,Whiting P,Sik V,Rees HH,Dinan L

更新日期：2001-06-01 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：:Eight previously undescribed ditepenoids, including four oxygenated abietanes (roscotanes A-D) and four oxygenated pimaranes (roscoranes A-D), along with twelve known diterpenoids were isolated from the whole plants of Kaempferia roscoeana. Their structures were elucidated by extensive spectroscopic analysis, and the ...

journal_title：Phytochemistry

authors： Boonsombat J,Mahidol C,Chawengrum P,Reuk-Ngam N,Chimnoi N,Techasakul S,Ruchirawat S,Thongnest S

更新日期：2017-11-01 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：:During the search for new protein tyrosine phosphatase (PTP) 1B inhibitors, EtOH extracts from the aerial parts of Lantana camara L. (lantana) collected at Manado (Indonesia) and two subtropical islands in Japan (Ishigaki and Iriomote Islands, Okinawa) exhibited potent inhibitory activities against PTP1B in an enzyme ...

journal_title：Phytochemistry

authors： Abdjul DB,Yamazaki H,Maarisit W,Rotinsulu H,Wewengkang DS,Sumilat DA,Kapojos MM,Losung F,Ukai K,Namikoshi M

更新日期：2017-12-01 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：:Proanthocyanidins (PACs) are natural plant-derived polymers used in leather tanning, wood adhesives, water purification, and mud additives for oil drilling. Quebracho (Schinopsis lorentzii and Schinopsis balansae) heartwood and mimosa (Acacia mearnsii) bark extracts are the major industrial sources of PACs. These comm...

journal_title：Phytochemistry

authors： Venter PB,Senekal ND,Amra-Jordaan M,Bonnet SL,Van der Westhuizen JH

更新日期：2012-06-01 00:00:00

abstract：:The combination of the hyphenated techniques LC-MS and LC-SPE-NMR constitutes a powerful platform for the rapid isolation and identification of minor components from natural sources. Electronic circular dichroism (ECD) is a useful tool to determine the absolute configuration of small quantities of chiral molecules. In...

journal_title：Phytochemistry

authors： Xu YJ,Foubert K,Dhooghe L,Lemière F,Maregesi S,Coleman CM,Zou Y,Ferreira D,Apers S,Pieters L

更新日期：2012-07-01 00:00:00

abstract：:Small molecules (xenobiotics) that inhibit cell-wall-localised enzymes are valuable for elucidating the enzymes' biological roles. We applied a high-throughput fluorescent dot-blot screen to search for inhibitors of Petroselinum xyloglucan endotransglucosylase (XET) activity in vitro. Of 4216 xenobiotics tested, with ...

journal_title：Phytochemistry

authors： Chormova D,Franková L,Defries A,Cutler SR,Fry SC

更新日期：2015-09-01 00:00:00

abstract：:The dichloromethane extract from leaves of Dictyoloma vandellianum afforded five alkaloids 2-(14'-hydroxy-14',15'-dimethylhexadecanyl)-4-quinolone, 2-(12'-hydroxy-12'-methyltridecanyl)-3-methoxy-4-quinolone, 2-(12'-hydroxy-12'-methyltridecanyl)-4-quinolone, 2-(14'-hydroxy-14',15'-dimethylhexadecanyl)-3-methoxy-4-quino...

journal_title：Phytochemistry

authors： Sartor CF,da Silva MF,Fernandes JB,Vieira PC,Fo ER,Garcia Cortez DA

更新日期：2003-05-01 00:00:00

abstract：:Six species of Portuguese Ulex L. in a total of nineteen populations were studied by GC-EIMS as to their content in quinolizidine alkaloids. Sparteine, beta-isosparteine, jussiaeiine A, N-methylcytisine, cytisine, 5,6-dehydrolupanine, rhombifoline, lupanine, jussiaeiine B, N-formylcytisine, N-acetylcytisine, anagyrine...

journal_title：Phytochemistry

authors： Máximo P,Lourenço A,Tei A,Wink M

更新日期：2006-09-01 00:00:00

abstract：:Cistus creticus L., an aromatic species from the Mediterranean area, contains various diterpenes bearing the labdane skeleton. The production of essential oil from this species has potential economic value, but so far, it has not been optimized. In order to contribute to a better knowledge of this species and to its d...

journal_title：Phytochemistry

authors： Paolini J,Falchi A,Quilichini Y,Desjobert JM,Cian MC,Varesi L,Costa J

更新日期：2009-06-01 00:00:00

abstract：:Marine sponges are an unusually rich source of bioactive natural products with clinical potential. They also often harbor rich communities of symbiotic bacteria that have often been suspected as the true producers of sponge-derived compounds. To date, these bacteria can in most cases not be cultivated, but culture-ind...

journal_title：Phytochemistry

authors： Hochmuth T,Piel J

更新日期：2009-10-01 00:00:00

abstract：:Chemical investigation of the glandular trichome exudate from Silene gallica L. (Caryophyllaceae) resulted in isolation of 10 cyclic fatty acyl glycosides (gallicasides A-J). The cyclic structures were characterized by a glycosidic linkage of the glucose moiety to either the C-12 or the C-13 position of the octadecano...

journal_title：Phytochemistry

authors： Asai T,Fujimoto Y

更新日期：2010-08-01 00:00:00

abstract：:From the aerial parts of Chrozophora obliqua, two phenylpropanoid glucosides: 4-O-methyl guaiacylglycerol 9-O-beta-glucopyranoside (1) and 4-O-methyl guaiacylglycerol 8-O-beta-glucopyranoside (2) together with syringin, benzyl alcohol glucoside, isorhamnetin-3-O-beta-glucopyranoside-7-O-alpha-rhamnopyranoside and quer...

journal_title：Phytochemistry

authors： Mohamed KM

更新日期：2001-10-01 00:00:00

abstract：:In Central America aerial parts of the Asteraceae Milleria quinqueflora are used in traditional medicine as a remedy for skin infections. Reinvestigation of this plant afforded thirteen sesquiterpene lactones (Sls), three of them are new. All isolated Sls were studied for their anti-inflammatory activity using the tra...

journal_title：Phytochemistry

authors： Castro V,Rüngeler P,Murillo R,Hernandez E,Mora G,Pahl HL,Merfort I

更新日期：2000-01-01 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：:A phytochemical investigation of the leaf exudate of Aloe marlothii has resulted in the isolation of a new chromone (7-O-methylaloeresin A) and a new anthrone (5-hydroxyaloin A 6'-O-acetate). Furthermore 7-O-methylaloesin was isolated as a natural product for the first time from the leaf exudate of Aloe rupestris. The...

journal_title：Phytochemistry

authors： Bisrat D,Dagne E,van Wyk BE,Viljoen A

更新日期：2000-12-01 00:00:00

abstract：:As part of a project to characterise plant-derived natural products that modulate bacterial multidrug resistance (MDR), bioassay-guided fractionation of a chloroform extract of the aerial parts of Rosmarinus officinalis led to the characterisation of the known abietane diterpenes carnosic acid (1), carnosol (2) and 12...

journal_title：Phytochemistry

authors： Oluwatuyi M,Kaatz GW,Gibbons S

更新日期：2004-12-01 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：:Nine pregnane glycosides containing peroxy functions in their sugar moieties (1-5 and 11-14), five oligosaccharides (6-10), six pregnane glycosides (15-20), and five cardiac glycosides (21-25) were isolated from the root barks of Periploca sepium Bge. (Asclepiadaceae) and the roots of Periploca forrestii Schltr. (Ascl...

journal_title：Phytochemistry

authors： Feng J,Zhang R,Zhou Y,Chen Z,Tang W,Liu Q,Zuo JP,Zhao W

更新日期：2008-11-01 00:00:00

abstract：:Six undescribed triterpenoids, schincarins A‒F, categorized as the preschisanartane (schincarin A), 3,4-secocycloartane (schincarins B‒D), 3,4; 9,10-disecocycloartane (schincarin E), and 3,4-secolanostane (schincarin F) classes, along with twelve known analogues, were obtained from the stems and leaves of Schisandra i...

journal_title：Phytochemistry

authors： Zhou M,Peng X,Zhou J,Liu Y,Meng X,Ruan H

更新日期：2020-09-01 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：:Three alkaloids, neoharringtonine, homoneoharringtonine and 3'S-hydroxyneoharringtonine, were isolated from the leaves and stems of Cephalotaxus harringtonia var. drupacea. Their structures were established by spectroscopic methods, including two-dimensional NMR and CD spectra, and their antileukaemic activity was eva...

journal_title：Phytochemistry

authors： Takano I,Yasuda I,Nishijima M,Yanagi Y,Takeya K,Itokawa H

更新日期：1997-02-01 00:00:00