Chemical constituents and antibacterial activity of Melastoma malabathricum L.

abstract：:Two new norsesquiterpenes were isolated from the extracts of the roots and rhizomes of Ligularia lapathifolia (Franch.) Hand.-Mazz. Their structures were identified as 2-acetyl-3a-methyl-5-(2-methyl-but-2-enoyloxy)-3a,4,5,6,7,7a-hexahydro-H-indene-4-carboxylic acid (1) and 2-acetyl-8a-methyl-2-(2-methyl-but-2-enoyloxy...

journal_title：Natural product research

authors： Li YS,Wang ZT,Zhang M,Chen JJ,Luo SD

更新日期：2004-04-01 00:00:00

abstract：:A new protein detector of 2,4,6-trinitrophenol (TNP, picric acid) is concisely reported herein for the first time. In brief, the gene of a specific scFv fragment, namely 3.5, was fused separately with the gene of β-lactamase and, subsequently, expressed in the periplasmic space of Escherichia coli, affording in such a...

journal_title：Natural product research

authors： Simonovic M,Mix T,Glumac M,Pejin B

更新日期：2020-12-18 00:00:00

abstract：:Essential oils hydrodistilled from the leaves and stem barks of Goniothalamus macrocalyx Ban., Goniothalamus albiflorus Ban. and Goniothalamus tamirensis Pierre ex Fin. & Gagnep. growing in Vietnam were analysed by gas chromatography (GC) and GC-coupled with mass spectrometry. α-Pinene (1.7-50.0%), β-pinene (tr-6.8%),...

journal_title：Natural product research

authors： Thang TD,Huong LT,Dai DN,Ogunwande IA

更新日期：2013-01-01 00:00:00

abstract：:A new phthalide derivative, xylarphthalide A (1), along with two known compounds (-)-5-carboxylmellein (2) and (-)-5-methylmellein (3), were isolated from the endophytic fungus Xylaria sp. GDG-102 cultured from the Chinese medicinal plant Sophora tonkinensis. Their structures were identified by MS and NMR experiments,...

journal_title：Natural product research

authors： Zheng N,Yao F,Liang X,Liu Q,Xu W,Liang Y,Liu X,Li J,Yang R

更新日期：2018-04-01 00:00:00

abstract：:Several Mediterranean shrubs, both autochthonous and naturalized, have been traditionally used as food, flavouring and/or spicing agents, and as phytopharmaceuticals. The interest around 'natural' and 'biological' products is steadily increasing in developed countries. Therefore, it seems reasonable to screen some shr...

journal_title：Natural product research

authors： Sanjust E,Mocci G,Zucca P,Rescigno A

更新日期：2008-05-20 00:00:00

abstract：:The aim of the present study was to evaluate the phenolic contents in capsule and root methanolic extracts of Euphorbia retusa followed by identification of phenolic on capsule extracts through high-performance liquid chromatography (HPLC- DAD) for the first time. Likewise, the antioxidant activity of both extracts wa...

journal_title：Natural product research

authors： Lahmadi S,Belhamra M,Karoune S,Imad K,Bensouici C,Kechebar MSA,Halis Y,Ksouri R

更新日期：2020-12-01 00:00:00

abstract：:Nine lupeol derivatives were synthesised and assayed in vitro for their antitumour activities against three human tumour cells lines, A549, LAC and HepG2. Of lupeol derivaties, six were new compounds, and five compounds against A549 cells, four compounds against HepG2 cells and three compounds against LAC cells were e...

journal_title：Natural product research

authors： Li W,Xiao Y

更新日期：2018-01-01 00:00:00

abstract：:A new bisabolane-type sesquiterpenoid, turmerone Q (1), along with six known compounds (2-7), were isolated from the rhizomes of Curcuma longa L. The structural elucidation of the new compound was conducted using 1H NMR, 13C NMR, HSQC, HMBC and NOESY spectroscopic analyses. The absolute configuration of 1 was elucidat...

journal_title：Natural product research

authors： Yuan T,Zhang C,Qiu C,Xia G,Wang F,Lin B,Li H,Chen L

更新日期：2018-08-01 00:00:00

abstract：:The world's rainforests hold untold potential for drug discovery. Rainforest plants are thought to contain evolved defensive active metabolites of greater diversity compared to plants from temperate regions. In recent years, the interest and overall output from pharmaceutical companies on novel antibacterial agents ha...

journal_title：Natural product research

authors： Othman M,Genapathy S,Liew PS,Ch'ng QT,Loh HS,Khoo TJ,Wiart C,Ting KN

更新日期：2011-11-01 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：:The present study was designed to evaluate the herbicidal activity of Datura metel against the noxious weed parthenium (Parthenium hysterophorus L.). In a laboratory bioassay, the effect of aqueous, methanol and n-hexane shoot and root extracts of 5, 10, 15 and 20% w/v (on a fresh weight basis) concentration of D. met...

journal_title：Natural product research

authors： Javaid A,Shafique S,Shafique S

更新日期：2010-09-01 00:00:00

abstract：:Armoracia rusticana (AR) was tested for antimicrobial and antioxidants power. The compound demonstrated to inhibit fish pathogens such as Vibrio anguillarum, V. harvey, V. alginolyticus, Aeromonas hydrophila, A. salmonicida, Photobacterium damselae subspecie piscicida, Tenacibaculum marinum and Pseudomonas anguillisep...

journal_title：Natural product research

authors： Manuguerra S,Caccamo L,Mancuso M,Arena R,Rappazzo AC,Genovese L,Santulli A,Messina CM,Maricchiolo G

更新日期：2020-06-01 00:00:00

abstract：:Seven pentacyclic triterpenoids including 3beta-O-(E)-coumaroyl-15alpha-hydroxy-beta-amyrin (1), 15alpha-hydroxy-beta-amyrin (2), 3beta-taraxerol (3), 3beta-taraxerol formate (4), 3beta-taraxerol acetate (5), 3beta-O-(E)-coumaroyl-taraxerol (6), and 3beta-O-(Z)-coumaroyl-taraxerol (7) were isolated and identified from...

journal_title：Natural product research

authors： Li DL,Li XM,Wang BG

更新日期：2008-06-15 00:00:00

abstract：:The emphasis of the present study is to evaluate a natural product and the potential microbicide activity using a dual chamber infection method. Malva sylvestris extracts and fractions were screened for anti-HIV activity by measuring the virus-antibody neutralization. Plant extracts with strong antiviral activity work...

journal_title：Natural product research

authors： Benso B,Rosalen PL,Pasetto S,Marquezin MCS,Freitas-Blanco V,Murata RM

更新日期：2019-08-20 00:00:00

abstract：:The chemical investigation of the leaves and stem bark of Acacia polyacantha (Fabaceae) led to the isolation of a new oleanane-type triterpenoid saponin named polyacanthoside A 1 together with fifteen known compounds. Their structures were established from spectral , mainly HRESIMS, 1D NMR and 2D NMR and by comparison...

journal_title：Natural product research

authors： Fotso W G,Na-Iya J,Mbaveng T A,Ango Yves P,Demirtas I,Kuete V,Samuel Y,Ngameni B,Efferth T,Ngadjui T B

更新日期：2019-12-01 00:00:00

abstract：:A new pterocarpan, named velucarpin D (1), along with nine known pterocarpans (2-10) were isolated from the stems of Dalbergia velutina. Their structures were determined by spectroscopic analysis. All isolated compounds were evaluated for their cytotoxicity against five human cancer cell lines (KB, HeLa S-3, MCF-7, He...

journal_title：Natural product research

authors： Kaennakam S,Sukandar ER,Hongnak S,Rassamee K,Siripong P,Tip-Pyang S

更新日期：2020-04-05 00:00:00

abstract：:One new havanensin-type limonoid (1) named trisinlin A with two known compounds (4E,8E)-2-[2'-hydroxyhexadecanoyl amino]-4,8-octadecadiene-1,3-diol (2), 9-octadecenoic acid-2',3'-dihydroxypropyl ester (3) were isolated from the roots of Trichilia sinensis. The structure of the new compound was unambiguously determined...

journal_title：Natural product research

authors： Liu SB,Chen HQ,Feng G,Guo ZK,Cai CH,Wang J,Mei WL,Dai HF

更新日期：2018-12-01 00:00:00

abstract：:Two new lanostane triterpnenoids named endertiins A and B (1 and 2) together with two known compounds as ganodecalone A (3) and ergosterol (4) have been successfully isolated from the cultivated fruit bodies of the mushroom Humphreya endertii Stey (Ganodermataceae). Their structures were elucidated by a combination of...

journal_title：Natural product research

authors： Quang DN,Long LD,Tung NQ,Thanh NN,Tham LX

更新日期：2020-08-03 00:00:00

abstract：:A novel tetrahydroxypyrrolizidine alkaloid (6) was obtained from rosmarinine degradation in 23% yield (isolated from Senecio callosas). ...

journal_title：Natural product research

authors： Nieto-Alvarez DA,Calderón JS,Mancilla T

更新日期：2003-01-01 00:00:00

abstract：:Neuroprotection under conditions of oxygen stress of two C21 steroidal glycosides, cynsaccatol Q (1) and saccatol K (2), isolated from Cynanchum auriculatum Royle ex Wight, and their potential mechanisms were studied using the model of H2O2-induced damage on PC12 cells in this paper. Experiments showed that compounds ...

journal_title：Natural product research

authors： Zhang M,Wang D,Li B

更新日期：2019-07-02 00:00:00

abstract：:A novel aromatic compound, grandiuvarone B (5-acetoxy-3-benzoyloxymethyl-5H-oxepin-4-one), along with a known compound grandiuvarone A (5-acetoxy-6-benzoyloxymethyl-5H-oxepin-4-one) were isolated from methanol extracts of Desmos chinensis leaves. Their structures were determined by various spectroscopic techniques inc...

journal_title：Natural product research

authors： Zhi QQ,Yan QH,Wang Q,Sun PF,Zhou HY,He ZM

更新日期：2020-04-01 00:00:00

abstract：:The essential oils of sage leaves (Salvia aucheri Bentham var. canescens Boiss. & Heldr.), growing wild in South Anatolia, were extracted by hydrodistillation and analysed by GC and GC-MS. The percentage yields of the essential oils from sage leaves harvested at different years were 1.0%, 1.3%, 1.3%, 1.0%, 1.4%, 1.5% ...

journal_title：Natural product research

authors： Figueredo G,Chalchat JC,Chalard P,Özcan MM,Al Juhaimi FY

更新日期：2012-01-01 00:00:00

abstract：:One new sesqui-neolignan compound, namely, sesqui-illisimonan A (1), one new neolignan, illisimonan A (2), and one new phenylpropanoid compound, illisimoid A (3) were isolated from the fruits of Illicium simonsii Maxim. The structures and absolute configurations of these compounds were determined by extensive spectros...

journal_title：Natural product research

authors： Zhuang PY,Chen MH,Wang YN,Wang XX,Feng YJ,Zhang DY

更新日期：2018-10-01 00:00:00

abstract：:One new naturally occurring quinone, 3',4'-dihydroxy-1,2,6-trimethoxy-[1,1'-biphenyl]-4(1H)-one (1), one new diarylpropane, emarginone A (2), and one new neolignan, emarginone B (3), along with eighteen known compounds have been isolated from the chemical investigation of the EtOAc-soluble fraction of the Vaccinium em...

journal_title：Natural product research

authors： Tu PC,Liang YC,Kao MC,Chao LK,Tseng MH,Lu TL,Sung PJ,Kuo YH

更新日期：2019-09-09 00:00:00

abstract：:The mechanism of inhibition of jack bean and Bacillus pasteurii ureases was investigated by triacontanyl palmitate (1) which is a long-chain fatty ester and has been isolated from Symplocos racemosa Roxb. Lineweaver-Burk, Dixon plots, and their secondary replots showed that 1 is a non-competitive inhibitor of these en...

journal_title：Natural product research

authors： Lodhi MA,Abbasi MA,Choudhary MI,Ahmad VU

更新日期：2007-07-10 00:00:00

abstract：:A flavanone has been isolated first time from the stem of Bauhinia variegata, and its structure was identified by colour reactions and spectral analysis. In a search for novel anticancer compounds from medicinal plants, the isolated flavanone was tested for cytotoxic activity against 57 human tumour lines, representin...

journal_title：Natural product research

authors： Rajkapoor B,Murugesh N,Rama Krishna D

更新日期：2009-01-01 00:00:00

abstract：:One new limonoid, named siamensinolide (1), together with two known limonoids (2 and 3) and eight carbazole alkaloids (4-11) were isolated from the twigs of Chalcas siamensis Tanaka. Their structures were elucidated by spectroscopic methods, mainly 1D and 2D NMR spectroscopy. O-methylclausenolide (2) displayed strong ...

journal_title：Natural product research

authors： Boonyaketgoson S,Rukachaisirikul V,Phongpaichit S,Trisuwan K

更新日期：2020-05-25 00:00:00

abstract：:The crystal structure and unambiguous absolute configuration of meleagrin (1) isolated from fungus Emericella dentata Nq45 is reported herein to first time on the bases of single crystal X-ray diffraction. Together with 1, haenamindole (2), isorugulosuvine (3), secalonic acid D (4), ergosterol (5) and cerebroside A (6...

journal_title：Natural product research

authors： Hamed A,Abdel-Razek AS,Araby M,Abu-Elghait M,El-Hosari DG,Frese M,Soliman HSM,Stammler HG,Sewald N,Shaaban M

更新日期：2020-03-19 00:00:00

abstract：:This study was carried out to investigate the biomedicinal potential of aqueous extract (1.25 and 2.5%) of three henna ecotypes (Shahdad, Roodbar and Bam) against Two types of Gram positive and negative bacteria, Staphylococcus aureus (ATCC 25923), Streptococcus agalactiae (ATCC 29933), Bacillus cereus (ATCC 14579), C...

journal_title：Natural product research

authors： Pasandi Pour A,Farahbakhsh H

更新日期：2020-12-01 00:00:00

abstract：:The chemical composition of the essential oil of Kurzamra pulchella (Lamiaceae) was determined. Twelve compounds were identified, with isomenthone (60.6%) and pulegone (37.1%) predominating. Chemotaxonomical considerations were discussed. ...

journal_title：Natural product research

authors： Echeverría J,Niemeyer HM

更新日期：2017-01-01 00:00:00