Microbial transformation of the anti-diabetic agent corosolic acid.

abstract：:A new flavanone glycoside, (2S)-dihydrooroxylin A 7-O-[β-D-apiosyl(1 → 2)]-β-D-glucoside (1), and four known compounds (2-5) were isolated from Tournefortia sibirica L. The chemical structures of these compounds were determined by 1 D and 2 D NMR and HR-ESI-MS spectra, and r...

journal_title：Natural product research

authors： Diao S,Jin M,Jin CS,Wei CX,Sun J,Zhou W,Li G

更新日期：2019-10-01 00:00:00

abstract：:A new β-tetralonyl glucoside, methylberchemiaside (1), along with five known compounds (2-6) were isolated from a fungus Colletotrichum sp . GDMU-1 derived from the leaves of Santalum album. Their structures were determined by detailed analysis of spectroscopic data. All compounds were tested for the inhibitory effect...

journal_title：Natural product research

authors： Liu W,Chen S,Li J,Yang X,Yan C,Liu H

更新日期：2019-02-01 00:00:00

abstract：:Tannic acid, a rich of natural and process-derived phenolic compound, has been shown to be an effective antagonist against viruses and bacteria. In this study, we determined the antimicrobial activity and mechanisms of tannic acid against Staphylococcus aureus with emphasis on inhibiting effect on biofilm formation. B...

journal_title：Natural product research

authors： Dong G,Liu H,Yu X,Zhang X,Lu H,Zhou T,Cao J

更新日期：2018-09-01 00:00:00

abstract：:A series of new thiazolyl chalcones, 1-[2-amino-4-methyl-1,3-thiazol-5-yl]-3-aryl-prop-2-en-1-one were prepared by piperidine mediated Claisen-Schmidt condensation of thiazolyl ketone with aromatic aldehyde. These chalcones on cyclisation gave 2-amino-6-(2-amino-4-methyl-1,3-thiazol-5-yl)-4-aryl-4H-pyridine-3-carbonit...

journal_title：Natural product research

authors： Venkatesan P,Maruthavanan T

更新日期：2012-01-01 00:00:00

abstract：:The Stewartia koreana Nakai (SK) had been used in oriental traditional medicine as a remedy for acute gastroenteritis, liver diseases, quadriplegia and pain. The antioxidant activity guided isolation 80% methyl extract from stems of SK yielded eight phenolic compounds. We evaluated the anti-oxidative and anti-inflamma...

journal_title：Natural product research

authors： Kim MH,Jang JH,Oh MH,Heo JH,Lee MW

更新日期：2014-01-01 00:00:00

abstract：:An aroma chemical emitted from Gerris paludum insularis was analyzed by means of GC and GC-MS. The main constituent was identified as iso amyl alcohol (3-methyl-1-butanol). The chemical showed a characteristic aroma of Gerris paludum insularis. ...

journal_title：Natural product research

authors： Ono T,Miyazawa M

更新日期：2004-06-01 00:00:00

abstract：:The biological properties of medicinal plants have been documented worldwide for many centuries. We aimed to evaluate interactions between crude extracts from Psidium guajava, Zingiber officinale, Cymbopogon citratus, Caryophyllus aromaticus, Mikania glomerata and Allium sativum samples and antimicrobial drugs against...

journal_title：Natural product research

authors： Ushimaru PI,Barbosa LN,Fernandes AA,Di Stasi LC,Fernandes A Jr

更新日期：2012-01-01 00:00:00

abstract：:In this study, the batch removal of copper(II) ions from an aqueous solution and wastewater using marine brown alga Sargassum sp. was investigated. Activated carbon prepared from Sargassum sp. by acid decomposition was also used for the removal of copper from the aqueous solution and wastewater. Activated carbon-prepa...

journal_title：Natural product research

authors： Esmaeili A,Ghasemi S,Sohrabipour J

更新日期：2010-03-01 00:00:00

abstract：:Eight known abietane diterpenes (1-8) were isolated for the first time from Abies numidica cones (Pinaceae). The structures of all compounds were established by means of 1D and 2D NMR, and UV spectral analyses. The hydromethanolic extract of A. numidica cones was tested for its antimicrobial activity against 17 gram-p...

journal_title：Natural product research

authors： Belhadj Mostefa M,Abedini A,Voutquenne-Nazabadioko L,Gangloff SC,Kabouche A,Kabouche Z

更新日期：2017-03-01 00:00:00

abstract：:A new diterpenoid glycoside, 14,15-dinor-labdan-13-one-8-O-alpha-L-arabinopyranoside (1), was isolated from Conyza blinii. The structure of this new arabinoside was elucidated on the basis of extensive NMR and HRMS spectroscopy. In addition, the presence of 3R-hydroxyoctadecanoic acid in C. blinii was reported for the...

journal_title：Natural product research

authors： Su Y,Chen L,Wang D,Chai X,Guo D

更新日期：2008-04-15 00:00:00

abstract：:One new neolignan glycoside, dolomiside A (1), together with 11 known phenylpropanoid glycosides were isolated from Dolomiaea souliei (Franch.) Shih. The structures of these isolates were determined by UV, CD, HR-ESI-TOFMS, 1D and 2D NMR analysis. ...

journal_title：Natural product research

authors： Yi M,Meng FC,Qu SY,Tao YY,Liao ZH,Chen M

更新日期：2020-04-01 00:00:00

abstract：:From the ethanolic extract of Lentinus edodes (Shiitake) eight known sterols were isolated and identified: ergosterol, ergosterol peroxide, (22E)-ergosta-5,7,9(11), 22-tetraen-3beta-ol, (22E)-ergosta-7,9(11),22-trien-3beta-ol, (22E)-ergosta-6,8,22-trien-3beta-ol, (22E)-norergosta-5,7,9,22-tetraen-3beta-ol, 3beta,5alph...

journal_title：Natural product research

authors： Rivera A,Benavides OL,Rios-Motta J

更新日期：2009-01-01 00:00:00

abstract：:The compositions of phenolic compounds in 10 cultivars of two mulberry species (Morus atropurpurea Roxb. and Morus alba Linn.) grown in four regions of China were analysed using HPLC-TOF-MS. Results showed that a total of 27 phenolic compounds were identified in these mulberry cultivars. The Taiwan cultivar from the J...

journal_title：Natural product research

authors： Yang J,Zhang X,Jin Q,Gu L,Liu X,Li J,Ni Y

更新日期：2017-05-01 00:00:00

abstract：:Cedronella canariensis is a lemon-scented species of the family Lamiaceae endemic to the Canary Islands where it is used in the traditional medicine to prepare infusions or inhalations for anti-catarrhal, tonic, diuretic, hypoglycaemiant, hypotensive, anti-inflammatory and decongestant of the respiratory tract. In thi...

journal_title：Natural product research

authors： Zorzetto C,Sánchez-Mateo CC,Rabanal RM,Lupidi G,Bramucci M,Quassinti L,Iannarelli R,Papa F,Maggi F

更新日期：2015-01-01 00:00:00

abstract：:Bioassay guided chemical investigation of the gorgonian Pacifigorgia senta led to the discovery of a new 19-oxygenated steroid, cholesta-5,24-diene-3β,7β,19-triol (1), as well as three known steroids (2-4). The structure of 1 was determined by extensive spectroscopic analysis, including NMR and MS spectra. All of the ...

journal_title：Natural product research

authors： Chen M,Han L,Zhang XL,Wang CY

更新日期：2016-06-01 00:00:00

abstract：:The aim of this study was to explore the extract/fractions and compounds of Diospyros lotus against various Gram-positive and Gram-negative bacteria strain. The results showed marked susceptibility of extract and its fractions against test pathogens. Among them, chloroform fraction was most dominant and effective agai...

journal_title：Natural product research

authors： Rauf A,Uddin G,Khan H,Arfan M,Siddiqui BS

更新日期：2016-01-01 00:00:00

abstract：:A phytochemical study of Asplenium ruta-muraria L. (Aspleniaceae) led to the isolation of a new caffeic acid glycoside, 2-O-caffeoyl-β-D-fructofuranosyl-(2 → 1)-α-D-glucopyranoside and an (α, β)-isomeric pair of 2E-caffeoyl-D-glucopyranoside, together with kaempferol-3-O-β-D-[6-E-caffeoyl-β-D-glucopyranosyl-(1 → 2)glu...

journal_title：Natural product research

authors： Fan P,Zhao L,Hostettmann K,Lou H

更新日期：2012-01-01 00:00:00

abstract：:The optimisation of nutritional requirements for dopamine (DA) synthesis by calcium alginate-entrapped mutant variant of Aspergillus oryzae EMS-6 using submerged fermentation technique was investigated. A total of 13 strains were isolated from soil. Isolate I-2 was selected as a better producer of DA and improved by e...

journal_title：Natural product research

authors： Ali S,Nawaz W

更新日期：2017-02-01 00:00:00

abstract：:A new prenylated xanthone, mangostanaxanthone VIII (7) and six known metabolites: gartanin (1), 1,3,8-trihydroxy-2-(3-methyl-2-butenyl)-4-(3-hydroxy-3-methylbutanoyl)-xanthone (2), rubraxanthone (3), 1,3,6,7-tetrahydroxy-8-prenylxanthone (4), garcinone C (5), and xanthone I (9-hydroxycalabaxanthone) (6) were separated...

journal_title：Natural product research

authors： Ibrahim SRM,Abdallah HM,El-Halawany AM,Nafady AM,Mohamed GA

更新日期：2019-01-01 00:00:00

abstract：:Two new C13-norsesquiterpenes claulanterpene A (1) and B (2), together with two known sesquiterpenes (3-4), were isolated from methanol extract of the stem and leaf of Clausena lansium collected from Qingyuan county, Guangdong Province, China. Their structures were elucidated on the base of extensive spectroscopic ana...

journal_title：Natural product research

authors： Liu XY,Fu XX,Li YY,Xiong ZH,Li BT,Peng WW

更新日期：2020-03-25 00:00:00

abstract：:A series of 4-hydroxy-3,4-dialkyl-2,6-diaryl-piperidine (7-12) have been synthesised by reduction of 3-alkyl-2,6-diarylpiperidin-4-one using the Grignard reagent. Structural assignments and conformational analysis of the compounds were established based on the spectral studies. All the piperdin-4-ol derivatives (7-12)...

journal_title：Natural product research

authors： Maruthavanan T,Venkatesan P

更新日期：2013-01-01 00:00:00

abstract：:The purpose of this study is to identify the quantity and antibacterial activity of the individual phenolic compounds in Brazilian red propolis. Quantitative analysis of the 12 phenolic compounds in Brazilian red propolis was carried out using reversed-phase high-performance liquid chromatography. The main phenolic co...

journal_title：Natural product research

authors： Inui S,Hatano A,Yoshino M,Hosoya T,Shimamura Y,Masuda S,Ahn MR,Tazawa S,Araki Y,Kumazawa S

更新日期：2014-01-01 00:00:00

abstract：:A novel alkaloid named oleraciamide C (1), with six known compounds, hydroxydihydrobovolide (2), uracil (3), catechol (4), 4-aminophenol (5), vanillic acid (6) as well as 3-hydroxypyridine (7), were isolated from Portulaca oleracea L. Additionally, hydroxydihydrobovolide (2), 4-aminophenol (5), 3-hydroxypyridine (7) w...

journal_title：Natural product research

authors： Xu L,Ying Z,Wei W,Hao D,Wang H,Zhang W,Li C,Jiang M,Ying X,Liu J

更新日期：2017-04-01 00:00:00

abstract：:This study describes the in vitro inhibition of protein denaturation of extract/fractions of Withania somnifera and isolated withanolides including 20β hydroxy-1-oxo(22R)-witha-2,5,24 trienolide (1), (20R,22R-14α,20α)-dihydroxy-1-oxowitha-2,5,16,24 tetraenolide (2). The results showed that the extract/fractions of the...

journal_title：Natural product research

authors： Khan MA,Khan H,Rauf A,Ben Hadda T

更新日期：2015-01-01 00:00:00

abstract：:Two new flavans, named (2S)-2',4'-dihydroxy-7-methoxy-8-methylflavan (1) and (2S)-2'-hydroxy-4',7-dimethoxy-8-methylflavan (2) were isolated from the roots of Dianella ensifolia. Their structures were elucidated by extensive spectroscopic measurements and comparison with data reported in literatures. Compounds 1 and 2...

journal_title：Natural product research

authors： Tang BQ,Huang SS,Liang YE,Sun JB,Ma Y,Zeng B,Lee SM,Lu JL

更新日期：2017-07-01 00:00:00

abstract：:From the fermentation broths of the actinomycete Micromonospora rhodorangea, four anthraquinone derivatives (1-4) were isolated, of which 2-ethyl-1,8-dihydroxy-3-methyl-anthraquinone (1) and 3,8-dihydroxy-1-propylanthraquinone (3) were determined as new compounds. Their structures were established by using extensive s...

journal_title：Natural product research

authors： Xue CM,Tian L,Lin WH,Deng ZW

更新日期：2009-01-01 00:00:00

abstract：:The present study explored the schizonticidal potential of traditionally used Magnolia champaca (L.) Baill. ex. Pierre flowers, identifying constituents of interest. The extraction of phytoconstituents was carried out by microwave-assisted technique, isolated via column chromatography, and characterised by various phy...

journal_title：Natural product research

authors： Mehrotra E,Vishwakarma J,Tripathi AC,Sonar PK,Saraf SK

更新日期：2019-02-01 00:00:00

abstract：:A new thiodiketopiperzaine, tedanizaine A (1), together with six known ones, were isolated from the marine sponge Tedania sp. Their structures were determined by spectroscopic analyses. The absolute configuration of 1 was established by ECD calculation. Compound 1 was the second example of thiodiketopiperazine bearing...

journal_title：Natural product research

authors： Zhang H,Lai W,Guan ZB,Liao XJ,Zhao BX,Xu SH

更新日期：2020-04-01 00:00:00

abstract：:Phenolics were extracted from powdered pomegranate peel using water, methanol, acetone and ethyl acetate (EtOAc), respectively. The antiliperoxidant activity of the extracts on lard was studied by peroxide value method. All the extracts showed enhanced inhibitory effect on lard peroxidation with the increase of phenol...

journal_title：Natural product research

authors： Zhang Q,Jia D,Yao K

更新日期：2007-03-01 00:00:00

abstract：:This research work involves the dyeing of acrylic fabric with natural dye extracted from date pits powders using Soxhlet extraction process. The effect of dye bath pH, salt concentration, dyeing time and temperature were studied. The optimal dyeing conditions where pH 4, 0 g/L salt, 60 min, and 80 °C. The COD and the ...

journal_title：Natural product research

authors： Dhahri H,Guesmi A,Ben Hamadi N

更新日期：2019-05-01 00:00:00