Functional characterization and correlation analysis of phenylalanine ammonia-lyase (PAL) in coumarin biosynthesis from Peucedanum praeruptorum Dunn.

abstract：:A catechol oxidase from lemon balm (Melissa officinalis) moCO which only catalyzes the oxidation of catechols to quinones without hydroxylating tyrosine was purified. The molecular mass of the M. officinalis enzyme of 39,370 Da was obtained by MALDI mass spectrometry and the isoelectric point was determined to be 3.4....

journal_title：Phytochemistry

authors： Rompel A,Büldt-Karentzopoulos K,Molitor C,Krebs B

更新日期：2012-09-01 00:00:00

abstract：:An extract of leaves and stems of Peperomia villipetiola has been found to contain myristicin (3-methoxy-4,5-methylenedioxy-allylbenzene) and seven chromenes, whose structures are methyl 5-hydroxy-7-methyl-2,2-dimethyl-2H-1-chromene-6-carboxylate (1), methyl 5-methoxy-7-methyl-2,2-dimethyl-2H-1-chromene-8-carboxylate ...

journal_title：Phytochemistry

authors： Malquichagua Salazar KJ,Delgado Paredes GE,Lluncor LR,Young MC,Kato MJ

更新日期：2005-03-01 00:00:00

abstract：:Seven new biotransformation products were isolated from a jar fermentor culture of Eucalyptus perriniana following administration of (+)-camphor. The main product was (1S,4R,6S)-6-hydroxybornan-2-one 6-O-beta-D-glucopyranoside. The minor components were (1S,4R,6R)-6-hydroxybornan-2-one 6-O-beta-D-glucopyranoside, (1R,...

journal_title：Phytochemistry

authors： Orihara Y,Noguchi T,Furuya T

更新日期：1994-03-01 00:00:00

abstract：:Investigation of the aerial parts of Rhyncholacis penicillata afforded the new chromenes, 7-hydroxy-6-(3-methylbutyryl)-5-oxymethyl-chromene (rhynchonin A) and 7-hydroxy-6-(2-methylbutyryl)-6-oxymethylchromene (rhynchonin B). Structures were elucidated by spectroscopic methods and independent synthesis. Rhynchonin A s...

journal_title：Phytochemistry

authors： Burkhardt G,Becker H,Grubert M,Thomas J,Eicher T

更新日期：1994-12-01 00:00:00

abstract：:The ubiquitous glycolipid 1,2-dilinolenoyl-3-galactopyranosylglycerol and a new protolimonoid glucoside, named prieurianoside, were isolated from the leaves of Trichilia prieuriana. The structure of the latter was established, by spectroscopic techniques, as 12beta,21-diacetoxy-29-beta-D-glucopyranosyloxy-23zeta -hydr...

journal_title：Phytochemistry

authors： Olugbade TA,Adesanya SA

更新日期：2000-08-01 00:00:00

abstract：:The methanolic extract from the pericarps of Sapindus rarak DC. was found to show pancreatic lipase inhibitory activity (IC50=ca. 614 microg/mL). From the extract, oleanane-type triterpene oligoglycosides, rarasaponins I-III (1-3), and raraoside A (4), were isolated together with 13 known saponins and four known sesqu...

journal_title：Phytochemistry

authors： Morikawa T,Xie Y,Asao Y,Okamoto M,Yamashita C,Muraoka O,Matsuda H,Pongpiriyadacha Y,Yuan D,Yoshikawa M

更新日期：2009-06-01 00:00:00

abstract：:The influence of solar irradiance and seasons on prostaglandin (PG) and arachidonic acid (AA) content in the marine red alga Gracilaria verrucosa (Huds.) Papenf. (unattached form) was investigated. PGA(2), PGE(2), PGF(2), and 15-keto-PGE(2) were isolated from the alga, quantitatively analyzed as 4-methyl-7-methoxycoum...

journal_title：Phytochemistry

authors： Imbs AB,Vologodskaya AV,Nevshupova NV,Khotimchenko SV,Titlyanov EA

更新日期：2001-12-01 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：:Using a bioassay for inhibition of plant growth and a combination of two countercurrent chromatographies: rotation locular countercurrent chromatography and droplet countercurrent chromatography, two biologically active glycosidal alkaloids, solasonine and solamargine were isolated from fresh ripe fruit of Solanum inc...

journal_title：Phytochemistry

authors： Fukuhara K,Kubo I

更新日期：1991-01-01 00:00:00

abstract：:Three iridoid glycosides, picrorosides A (1), B (2) and C (3), and a cucurbitacin glycoside, scrophoside A (4), were isolated from the rhizomes of Neopicrorhiza scrophulariiflora (Scrophulariaceae), along with two known iridoid glycosides, picrosides I (5) and II (6), and three known cucurbitacin glycosides (7-9). The...

journal_title：Phytochemistry

authors： Kim IH,Uchiyama N,Kawahara N,Goda Y

更新日期：2006-12-01 00:00:00

abstract：:The compositions of the essential oils obtained from ten populations of Thymus caespititius grown on S. Jorge (Azores) were studied by GC and GC-MS. All the oils analysed were dominated by their monoterpene fraction (69-9%). The sesquiterpene fraction was rather small (4-17%) and consisted mainly of oxygen-containing ...

journal_title：Phytochemistry

authors： Pereira SI,Santos PA,Barroso JG,Figueiredo AC,Pedro LG,Salgueiro LR,Deans SG,Scheffer JJ

更新日期：2000-10-01 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：: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

abstract：:In addition to hecogenin 3-O-beta-D-glucopyranosyl(1--> 4)-beta-D-galactopyranoside, two new steroidal saponins were isolated from the aerial parts of Tribulus terrestris L. On the basis of chemical and spectroscopic evidence, especially 2D NMR spectroscopic techniques, the structures of the new saponins were establis...

journal_title：Phytochemistry

authors： Wu G,Jiang S,Jiang F,Zhu D,Wu H,Jiang S

更新日期：1996-08-01 00:00:00

abstract：:Four undescribed 23,24-O-isopropylidene-19(18 → 17)-abeo-28-noroleanane-derived spirocyclic triterpenoids and an undescribed 28-noroleanane-derived spirocyclic triterpenoid, together with five known 28-noroleanane-derived spirocyclic triterpenoids, were isolated and identified. In addition, three undescribed iridoid g...

journal_title：Phytochemistry

authors： Le DD,Nguyen DH,Zhao BT,Kim JA,Kim SK,Min BS,Choi JS,Woo MH

更新日期：2018-09-01 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：:2,5-Dimethyl-4-hydroxy-3[2H]-furanone 6'-O-malonyl-beta-D-glucopyranoside was isolated from a glycosidic extract of strawberry fruit (Fragaria x ananassa, cv. Senga Sengana) by means of countercurrent chromatography and reverse-phase HPLC. Identification was achieved by comparison of chromatographic and 1H, 13C and 2D...

journal_title：Phytochemistry

authors： Roscher R,Herderich M,Steffen JP,Schreier P,Schwab W

更新日期：1996-09-01 00:00:00

abstract：:Six bisdesmosidic triterpenoidal saponins, gleditsiosides H-K and gleditsia saponins C' and E', were isolated from the anomalous fruits of Gleditsia sinensis. Their structures were established by a combination of extensive NMR (DEPT, DQF-COSY, HETCOR, HOHAHA, HMBC and ROESY) studies and chemical degradation. ...

journal_title：Phytochemistry

authors： Zhang Z,Koike K,Jia Z,Nikaido T,Guo D,Zheng J

更新日期：1999-10-01 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 qualitative and quantitative compositions of leaf cuticular waxes from potato (Solanum tuberosum) varieties were studied. The principal components of the waxes were very long chain n-alkanes, 2-methylalkanes and 3-methylalkanes (3.1-4.6 microg cm(-2)), primary alcohols (0.3-0.7 microg cm(-2)), fatty acids (0.3-0.6...

journal_title：Phytochemistry

authors： Szafranek BM,Synak EE

更新日期：2006-01-01 00:00:00

abstract：:Alkaline nitrobenzene oxidation, ozonation and methoxyl content determinations were applied to decomposing leaf litter of Ginkgo biloba L., Cinnamomum camphora sieb., Zelkova serrata Makino and Firmiana simplex W. F. Wight, respectively, during mulching to investigate the properties and estimate changes in lignin comp...

journal_title：Phytochemistry

authors： Jin Z,Akiyama T,Chung BY,Matsumoto Y,Iiyama K,Watanabe S

更新日期：2003-11-01 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：:Glucosinolates are secondary plant compounds typically found in members of the Brassicaceae and a few other plant families. Usually each plant species contains a specific subset of the ∼ 130 different glucosinolates identified to date. However, intraspecific variation in glucosinolate profiles is commonly found. Sinal...

journal_title：Phytochemistry

authors： de Graaf RM,Krosse S,Swolfs AE,te Brinke E,Prill N,Leimu R,van Galen PM,Wang Y,Aarts MG,van Dam NM

更新日期：2015-02-01 00:00:00

abstract：:Valerophenone synthase (VPS) is a polyketide synthase that catalyzes the formation of the phloroglucinol derivatives in the synthesis of the bitter acids in hop (Humulus lupulus). The reaction uses isovaleryl-CoA or isobutyryl-CoA, but otherwise it is identical to that of the chalcone synthase in flavonoid biosynthesi...

journal_title：Phytochemistry

authors： Zuurbier KW,Leser J,Berger T,Hofte AJ,Schröder G,Verpoorte R,Schröder J

更新日期：1998-12-01 00:00:00

abstract：:Six new methyl angolensate type (1-6) and three new mexicanolide-type (7-9) limonoids, along with six known limonoids (10-15), were isolated from the seeds of Cipadessa baccifera. The structures of all these compounds were established by extensive 1D, 2D NMR, and HRESIMS experiments, and structures of 11 and 13 were f...

journal_title：Phytochemistry

authors： Siva B,Poornima B,Venkanna A,Prasad KR,Sridhar B,Nayak VL,Ramakrishna S,Babu KS

更新日期：2014-02-01 00:00:00

abstract：:Four cycloartane- (hareftosides A-D) and oleanane-type triterpenoids (hareftoside E) were isolated from Astragalus hareftae along with fifteen known compounds. Structures of the compounds were established as 3,6-di-O-β-D-xylopyranosyl-3β,6α,16β,24(S),25-pentahydroxycycloartane, 3,6,24-tri-O-β-D-xylopyranosyl-3β,6α,16β...

journal_title：Phytochemistry

authors： Horo I,Bedir E,Masullo M,Piacente S,Ozgökçe F,Alankuş-Çalışkan O

更新日期：2012-12-01 00:00:00

abstract：:In plant terpene biosynthesis, oxidation of the hydrocarbon backbone produced by terpene synthases is typically carried out by cytochrome P450 oxygenases (CYPs). The modifications introduced by CYPs include hydroxylations, sequential oxidations at one position and ring rearrangements and closures. These reactions sign...

journal_title：Phytochemistry

authors： Bathe U,Tissier A

更新日期：2019-05-01 00:00:00

abstract：:Landraces of maize (Zea mays ssp. mays) and its wild teosinte relatives (Zea mays spp. parviglumis and mexicana) were surveyed for sensitivity to fumonisin B(1), a phytotoxin produced by the maize pathogen Gibberella moniliformis. Only two of 42 Z. mays samples were highly insensitive to FB(1) (ED(50) = ca. 200 microM...

journal_title：Phytochemistry

authors： Desjardins AE,Plattner RD,Stessman RJ,McCormick SP,Millard MJ

更新日期：2005-10-01 00:00:00

abstract：:Although it is well known that solar ultraviolet B (UV-B) radiation enhances plant defenses, there is less knowledge about traits that define insect resistance in field-grown soybean. Here we study the effects of solar UV-B radiation on: a) the induction of phenolic compounds and trypsin proteinase inhibitors (TPI) in...

journal_title：Phytochemistry

authors： Dillon FM,Chludil HD,Zavala JA

更新日期：2017-09-01 00:00:00

abstract：:The Madagascar periwinkle produces a large palette of Monoterpenoid Indole Alkaloids (MIAs), a class of complex alkaloids including some of the most valuable plant natural products with precious therapeutical values. Evolutionary pressure on one of the hotspots of biodiversity has obviously turned this endemic Malagas...

journal_title：Phytochemistry

authors： Dugé de Bernonville T,Clastre M,Besseau S,Oudin A,Burlat V,Glévarec G,Lanoue A,Papon N,Giglioli-Guivarc'h N,St-Pierre B,Courdavault V

更新日期：2015-05-01 00:00:00