Five labdane diterpenoids from the seeds of Aframomum zambesiacum.

abstract：:Radicinin is a phytotoxic and antibiotic metabolite produced by some phytopathogenic fungi. Precursor administration and cell-free experiments with deoxyradicinin and radicinin were carried out in Bipolaris coicis H13-3. When deoxyradicinin was administered to the fungus, radicinin and 3-epi-radicinin formed. When rad...

journal_title：Phytochemistry

authors： Suzuki M,Sakuno E,Ishihara A,Tamura J,Nakajima H

更新日期：2012-03-01 00:00:00

abstract：:Scrokoelziside A, isolated from the aerial parts of Scrophularia koelzii was shown to be 3-O-([alpha-L-rhamnopyranosyl-(1-->3), beta-D-glucopyranosyl-(1-->2)]-beta-D-fucopyranosyl-(1-->4)-beta-D- glucopyranosyl]-13 beta,28-epoxyolean-11-en-23-ol, on the basis one- and two-dimensional NMR homo- and hetero-nuclear spect...

journal_title：Phytochemistry

authors： Bhandari SP,Roy R,Agrawal PK,Garg HS

更新日期：1996-02-01 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：:Two sulfur-containing compounds, (S)-2-amino-5-((R)-1-carboxy-2-((E)-3-(4-hydroxy-3-methoxyphenyl)allylthio)ethyl-amino)-5-oxopentanoic acid (1) and (S)-2-amino-5-((R)-1-(carboxymethylamino)-3-((E)-3-(4-hydroxyphenyl)allylthio)-1-oxopropan-2-ylamino)-5-oxopentanoic acid (2), and one 1H-pyrrole-2-carboxylic acid deriva...

journal_title：Phytochemistry

authors： Zheng ZP,Ma J,Cheng KW,Chao J,Zhu Q,Chang RC,Zhao M,Lin ZX,Wang M

更新日期：2010-12-01 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 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：: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：:Pumpkin (Cucurbita pepo) seeds are used locally in Eritrea to treat tapeworm. Seeds were found to be rich in oil (approximately 35%), protein (38%), alpha-tocoferols (3 mg/100 g) and carbohydrate content (approximately 37%). The physico-chemical properties and fatty acid composition of the seed oil were examined. The ...

journal_title：Phytochemistry

authors： Younis YM,Ghirmay S,al-Shihry SS

更新日期：2000-05-01 00:00:00

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：:Plant cell suspension cultures of Rauvolfia are able to produce a high amount of arbutin by glucosylation of exogenously added hydroquinone. A four step purification procedure using anion exchange, hydrophobic interaction, hydroxyapatite-chromatography and chromatofocusing delivered in a yield of 0.5%, an approximatel...

journal_title：Phytochemistry

authors： Arend J,Warzecha H,Stöckigt J

更新日期：2000-01-01 00:00:00

abstract：:Four new allose-containing triterpenoid saponosides, scabriosides A, B, C and D were isolated from the roots of Scabiosa rotata. Their structures were established as 3-O-beta-D-xylopyranosyl-28-O-[beta-D-allopyranosyl (1-->6)-beta-D-glucopyranosyl]-pomolic acid, 3-O-[alpha-L-rhamnopyranosyl (1-->2)-beta-D-xylopyranosy...

journal_title：Phytochemistry

authors： Baykal T,Panayir T,Tasdemir D,Sticher O,Calis I

更新日期：1998-07-01 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：:The enzymatic glucose cleavage of palicoside revealed the biosynthetic pathway to akagerine, whereas the conversion of dolichantoside led to a new quaternary heteroyohimbine alkaloid named N(b)-methyl-21-beta-hydroxy-mayumbine. The hypothetical models of reactions occurring after the conversion of both substrates are ...

journal_title：Phytochemistry

authors： Brandt V,Tits M,Penelle J,Frédérich M,Angenot L

更新日期：2001-07-01 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：:Ragi bifunctional α-amylase-trypsin inhibitor (RBI) of Eleusine coracana (L.) Gaertn. (finger millet) simultaneously inhibits α-amylase and trypsin. In continuation of previous work on the cloning, expression and characterization of RBI, a bidirectional promoter from finger millet was explored on the basis of experime...

journal_title：Phytochemistry

authors： Sen S,Dutta SK

更新日期：2016-09-01 00:00:00

abstract：:Five p-terphenyl derivatives named thelephantins D-H (1-5) together with nine known compounds, thelephantins A-C (6-8), ganbajunin E (9), p-hydroxylbenzoic acid (10), ganbajunin C (11), thelephorin A (12), 2-O-methylatromentin (13) and atromentin (14), were isolated from the methanolic extract of fruit bodies of the T...

journal_title：Phytochemistry

authors： Ngoc Quang D,Hashimoto T,Hitaka Y,Tanaka M,Nukada M,Yamamoto I,Asakawa Y

更新日期：2003-08-01 00:00:00

abstract：:Allelopathy is the chemical mediated communication among plants. While on one hand there is growing interest in the field, on the other hand it is still debated as doubts exist at different levels. A number of compounds have been reported for their ability to influence plant growth, but the existence of this phenomeno...

journal_title：Phytochemistry

authors： Scognamiglio M,Fiumano V,D'Abrosca B,Esposito A,Choi YH,Verpoorte R,Fiorentino A

更新日期：2014-10-01 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：: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：:Seven saponins named pithedulosides A-G were isolated from the seeds of Pithecellobium dulce. Their structures were established through spectral analyses as echinocystic acid 3-O-alpha-L-arabinopyranosyl-(1-->6)-beta-D-glucopyranoside, echinocystic acid and oleanolic acid 3-O-alpha-L-arabinopyranosyl- (1-->2)-alpha-L-...

journal_title：Phytochemistry

authors： Nigam SK,Gopal M,Uddin R,Yoshikawa K,Kawamoto M,Arihara S

更新日期：1997-04-01 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 study of the chemistry and antibacterial activity of Scrophularia deserti led to the isolation of eight compounds, including the metabolite 3(zeta)-hydroxy-octadeca-4(E),6(Z)-dienoic acid (1). The known compounds ajugoside (2), scropolioside B (3), 6-O-alpha-L-rhamnopyranosylcatalpol (4), buddlejoside A(8) (5), scro...

journal_title：Phytochemistry

authors： Stavri M,Mathew KT,Gibbons S

更新日期：2006-07-01 00:00:00

abstract：:Phytoalexins are inducible chemical defenses produced by plants in response to diverse forms of stress, including microbial attack. Our search for phytoalexins from cruciferous plants resistant to economically important fungal diseases led us to examine stinkweed or pennycress (Thlaspi arvense), a potential source of ...

journal_title：Phytochemistry

authors： Pedras MS,Chumala PB,Suchy M

更新日期：2003-11-01 00:00:00

abstract：:An early development-specific soluble 55 kDa Ca(2+)-dependent protein kinase has been purified to homogeneity from sandalwood somatic embryos and biochemically characterized. The purified enzyme, swCDPK, resolved into a single band on 10% polyacrylamide gels, both under denaturing and non-denaturing conditions. swCDPK...

journal_title：Phytochemistry

authors： Anil VS,Sankara Rao K

更新日期：2001-09-01 00:00:00

abstract：:Green tissues of spikemoss Selaginella martensii Spring possessed the complex oxylipins patterns. Major oxylipins were the products of linoleic and α-linolenic acids metabolism via the sequential action of 13-lipoxygenase and divinyl ether synthase (DES) or allene oxide synthase (AOS). AOS products were represented by...

journal_title：Phytochemistry

authors： Ogorodnikova AV,Mukhitova FK,Grechkin AN

更新日期：2015-10-01 00:00:00

abstract：:In order to study the evolution of pathways of plant secondary metabolism, we use the biosynthesis of pyrrolizidine alkaloids (PAs) as a model system. PAs are regarded as part of the plant's constitutive defense against herbivores. Homospermidine synthase (HSS) is the first specific enzyme of PA biosynthesis. The gene...

journal_title：Phytochemistry

authors： Nurhayati N,Gondé D,Ober D

更新日期：2009-03-01 00:00:00

abstract：:A new bisdesmodic triterpenoid saponin, dulcin was isolated from the seeds of Pithecellobium dulce and was identified as 3-O-[beta-D-glucopyranosyl (1-->2)-alpha-L-arabinopyranosyl]- 28-O-[beta-D-xylopyranosyl (1-->6)-beta-D-glucopyranosyl]-echinocystic acid. The known oleanolic acid saponin PE, oleanolic acid 3-O-bet...

journal_title：Phytochemistry

authors： Sahu NP,Mahato SB

更新日期：1994-11-01 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：:Germacrene D is considered as a precursor of many sesquiterpene hydrocarbons. We have investigated the acid catalyzed as well as the photochemically and thermally induced rearrangement processes of germacrene D isolated from several Solidago species, which contain both enantiomers of germacrene D. Enantiomeric mixture...

journal_title：Phytochemistry

authors： Bülow N,Konig WA

更新日期：2000-09-01 00:00:00

abstract：:Further investigation of the leaves and stems of Zygophyllum album afforded four triterpene glycosides which were characterized as 14-decarboxyquinovic acid-3 beta-O-beta-D-quinovopyranosyl (1-->4)-quinovopyranoside, quinovic acid 28-O-beta-D-glucopyranosyl (2-->1)beta-D-glucopyranosyl ester, quinovic acid 27-O-beta-D...

journal_title：Phytochemistry

authors： Hassanean HA,el-Hamouly MM,el-Moghazy SA,Bishay DW

更新日期：1993-06-01 00:00:00