Antioxidant activity and two new flavonoids from Washingtonia filifera.

abstract：:Using a bioactivity-guided fractionation procedure, five cembranolides, 11-epi-sinulariolide acetate (1), 11-dehydrosinulariolide (2), sinulariolide (3), dihydrosinularin (4), and 3,4:8,11-bisepoxy-7-acetoxycembra-15(17)-en-1,12-olide (5), along with two nucleosides, 2'-deoxyadenosine and thymidine, were isolated from...

journal_title：Natural product research

authors： Hsieh PW,Chang FR,McPhail AT,Lee KH,Wu YC

更新日期：2003-12-01 00:00:00

abstract：:A new indole diterpene, named penicindopene A (1), together with seven known compounds (2 - 8), was isolated from the deep-sea fungus Penicillium sp. YPCMAC1. The structure of penicindopene A was elucidated by extensive spectroscopic analyses (1 D and 2 D NMR, and HRESIMS data), in addition to the ECD calculations for...

journal_title：Natural product research

authors： Liu L,Xu W,Li S,Chen M,Cheng Y,Yuan W,Cheng Z,Li Q

更新日期：2019-10-01 00:00:00

abstract：:This study investigated the in vitro anticancer potential of phytochemical constituents isolated from the methanolic extract of Eriocephalus africanus. One flavanone (hesperidin) and two flavones (luteolin and apigenin) were isolated for the first time from the plant using column chromatography. Standard MTT assay was...

journal_title：Natural product research

authors： Magura J,Moodley R,Maduray K,Mackraj I

更新日期：2020-03-25 00:00:00

abstract：:Aedes aegypti is a primary vector of dengue, a mosquito-borne viral disease infecting 50-100 million people every year. Here, we biosynthesised mosquitocidal silver nanoparticles (AgNP) using the aqueous leaf extract of Crotalaria verrucosa. The green synthesis of AgNP was studied by UV-vis spectroscopy, SEM, EDX and ...

journal_title：Natural product research

authors： Murugan K,Sanoopa CP,Madhiyazhagan P,Dinesh D,Subramaniam J,Panneerselvam C,Roni M,Suresh U,Nicoletti M,Alarfaj AA,Munusamy MA,Higuchi A,Kumar S,Perumalsamy H,Ahn YJ,Benelli G

更新日期：2016-01-01 00:00:00

abstract：:Four xanthones were isolated from Gentianopsis paludosa Ma and were identified by modern spectroscopic methods. Cytotoxicity of the four xanthones was tested on HepG2 cells and HL-60 cells by sulphorhodamine B (SRB) assay. Clonogenic survival assay, trypan blue exclusion method, AO/EB staining and DNA fragmentation as...

journal_title：Natural product research

authors： Ding L,Liu B,Zhang SD,Hou Q,Qi LL,Zhou QY

更新日期：2011-04-01 00:00:00

abstract：:Chronic administration of myricetin (100 and 300 mg kg⁻¹, p.o., for 4 weeks) isolated from Vitis vinifera (Vitaceae) ameliorated hypertension and oxidative stress induced by deoxycorticosterone acetate (DOCA)-salt in rats. Myricetin treatment reduced systolic blood pressure, vascular reactivity changes and reversed th...

journal_title：Natural product research

authors： Borde P,Mohan M,Kasture S

更新日期：2011-09-01 00:00:00

abstract：:Phytochemical investigation of the methylenechloride/methanol extract of the aerial parts of Stachys aegyptiaca afforded a new neoclerodane-type diterpene with a new side chain 1, in addition to two known diterpenes 2 and 3 and a known flavonoid glycoside 4. The structures of the compounds were determined by comprehen...

journal_title：Natural product research

authors： Mohamed Ael-H,Mohamed NS

更新日期：2014-01-01 00:00:00

abstract：:Essential oils from aerial parts of Senecio nutans, Senecio viridis, Tagetes terniflora and Aloysia gratissima were analysed by GC-MS and their antifungal activities were assayed on toxigenic Fusarium and Aspergillus species. Sabinene (27.6 ± 0.1%), α-phellandrene (15.7 ± 0.3%), o-cymene (9.6 ± 0.2%) and β-pinene (6.1...

journal_title：Natural product research

authors： Galvez CE,Jimenez CM,Gomez ALA,Lizarraga EF,Sampietro DA

更新日期：2020-05-01 00:00:00

abstract：:A new citromycetin analogue, ascomycotin A (1), together with eight known compounds, wortmannilactone E (2), orcinol (3), orsellinic acid (4), isosclerone (5), (3R,4S)-( - )-4-hydroxymellein (6), diorcinol (7), chaetocyclinone B (8) and 2,5-dimethoxy-3,6-di(p-methoxypheny1)-1,4-benzoquinone (9), was isolated from the ...

journal_title：Natural product research

authors： Tian YQ,Lin XP,Liu J,Kaliyaperumal K,Ai W,Ju ZR,Yang B,Wang J,Yang XW,Liu Y

更新日期：2015-01-01 00:00:00

abstract：:An alternative method for the synthesis of the 8-methyl-1-tetralone from the commercially available 5-methoxy-1-tetralone has been developed. The transformation involves eight steps and affords an overall yield 25%. ...

journal_title：Natural product research

authors： Poon PS,Bedoya L,Churio GJ,Banerjee AK

更新日期：2014-01-01 00:00:00

abstract：:The aim of this study is to estimate the nutritive values, metabolites of Hass and Reed Avocado cultivars and evaluate their antimicrobial and anticancer activities. Hass was rich in water soluble vitamins, iron and calcium while, Reed contains more fat soluble vitamins. Benzaldehyde and butyl phenol derivatives were ...

journal_title：Natural product research

authors： Younis IY,Hifnawy MS,El-Hawary SS,El Bishbishy MH,Elateek SY

更新日期：2020-09-11 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：:This article investigates the effect of microwaves on the amount of volatile compounds Achillea tenuifolia Lam with two methods, headspace single-drop microextraction and microwave-assisted headspace single-drop microextraction (MA-SDME), for the analysis of essential oil. Solvent selection, solvent volume, microwave ...

journal_title：Natural product research

authors： Piryaei M,Nazemiyeh H

更新日期：2016-01-01 00:00:00

abstract：:Chemical investigation of Penthorum chinense resulted in the isolation of two neolignans (1 and 2) together with two known compounds (3 and 4). The structures of compounds 1 and 2 were determined by interpretation of spectroscopic data, and absolute configurations were made based on electronic circular dichroism (ECD)...

journal_title：Natural product research

authors： Huang D,Dong Z,Sun L,Chen W,Sun L

更新日期：2020-06-01 00:00:00

abstract：:A new cytisine-type alkaloid, along with five known alkaloids was obtained from the seeds of Sophora alopecuroides. Their structures were determined to be (-)-N-(2'-hydroxy-3',5'-di-tert-butyl-toluene)-cytisine (1), (-)-lupanine (2), (+)-matrine (3), (+)-sophoramine (4), (+)-lehmannine (5) and (-)-sophocarpine (6). Th...

journal_title：Natural product research

authors： Rong ZJ,Gao XX,Hu GS,Yan T,Jia JM,Wang AH

更新日期：2020-09-23 00:00:00

abstract：:Two new triterpene saponins, namely notoginsenoside Ng5 (1) and notoginsenoside Ng6 (2) were isolated from the leaves of Panax notoginseng, along with five known ones. Their structures were determined by chemical methods, NMR and X-ray experiments. The absolute configuration of compound 3 with four sugar units was con...

journal_title：Natural product research

authors： Huang JW,Du YQ,Li CJ,Yang JZ,Ma J,Zang YD,Chen NH,Zhang DM

更新日期：2019-10-22 00:00:00

abstract：:Loliolide content was determined in 13 marine algae including red, brown and green algae collected from the Black Sea, the Dardanelles and the Aegean Sea. Identification and quantification were performed by gas chromatography-mass spectrometry. The loliolide content in green alga is 1.76 microg g(-1), ranges from 0.14...

journal_title：Natural product research

authors： Percot A,Yalcin A,Aysel V,Erduğan H,Dural B,Güven KC

更新日期：2009-01-01 00:00:00

abstract：:Extracts obtained from Cyrtocarpa procera Kunth were evaluated to determine their toxicity on Artemia salina Leach. All the extracts showed a significant activity. Bioguided fractionation of these extracts led to the isolation of beta-sitosterol and the identification of 1,3-propyl-dipentadecanoate, 3-hydroxypropyl-9-...

journal_title：Natural product research

authors： Rodríguez-López V,Aguirre-Crespo F,Salazar L,Estrada-Soto S

更新日期：2006-01-01 00:00:00

abstract：:Citrinin dimeric derivatives are bioactive polyketides previously reported from Penicillium, Aspergillus and Monascus fungi species. Due to the large distance between the stereogenic centers of the two monomer units, it was difficult to determine the absolute configuration of the whole molecule (1). In previous work, ...

journal_title：Natural product research

authors： Cao F,Sun TT,Yang JK,Zhao GZ,Liu QA,Hu LD,Ma ZY,Zhu HJ

更新日期：2019-08-01 00:00:00

abstract：:A phytochemical reinvestigation of the whole plant of Euphorbia segetalis yielded five tetracyclic triterpenes: 3beta-hydroxy-cycloart-25-en-24-one (1), cycloart-25-ene-3beta,24-diol (2), cycloart-23-ene-3beta,25-diol (3), lanosta-7,9(11),24-trien-3beta-ol (4) and lanosta-7,9(11),24(31)-trien-3beta-ol (5). beta-acetox...

journal_title：Natural product research

authors： Madureira AM,Ascenso JR,Valdeira L,Duarte A,Frade JP,Freitas G,Ferreira MJ

更新日期：2003-10-01 00:00:00

abstract：:The structure of pregnane oligoglycosides, namely rocinine (1) and marsdinine (11), which have been isolated from the chloroform soluble extract of the dried stem of Marsdenia roylei, were elucidated using MS, (1)H NMR, (13)C NMR, (1)H-(1)H COSY, HSQC and TOCSY experiments as well as chemical degradation and derivatis...

journal_title：Natural product research

authors： Gupta V,Kumar A,Khare A,Khare NK

更新日期：2009-01-01 00:00:00

abstract：:Peperomia obtusifolia is a herbaceous perennial plant native to the Americas reported as a traditional medicine to treat snake bites and as a skin cleanser. The bioassay-guided fractionation of crude extracts from aerial parts of P. obtusifolia against a panel of clinically important fungi and bacteria, showed that he...

journal_title：Natural product research

authors： Ruiz Mostacero N,Castelli MV,Cutró AC,Hollmann A,Batista JM Jr,Furlan M,Valles J,Fulgueira CL,López SN

更新日期：2019-06-14 00:00:00

abstract：:A new sesquiterpenoid, malayscaphiol (1), and three known compounds, lupeol (2), lupenone (3) and stigmasterol (4), were isolated from the methanolic extract of the stem bark of Scaphium macropodum. The structures of the isolated compounds were determined using several spectroscopic methods, including UV-vis, FT-IR, 1...

journal_title：Natural product research

authors： Al Muqarrabun LM,Ahmat N,Aris SR,Shamsulrijal N,Baharum SN,Ahmad R,Rosandy AR,Suratman MN,Takayama H

更新日期：2014-01-01 00:00:00

abstract：:Two new fatty acid esters of triterpenoids (1-2) together with eleven known compounds (3-13) were obtained after investigation of the CH2Cl2-MeOH (1:1) crude extract from the leaves of Schefflera barteri Harms. All these compounds (1-13) were isolated for the first time from this plant among which compounds 3, 4, 6 an...

journal_title：Natural product research

authors： Mbougnia JFT,Bitchagno GTM,Wouamba SCN,Jouda JB,Awouafack MD,Tene M,Lenta BN,Kouam SF,Tane P,Sewald N

更新日期：2020-11-18 00:00:00

abstract：:Herein we report the regioselective synthesis of podophyllotoxin-Glycosyl triazole hybrids catalysed by Ag(I)-N-heterocyclic carbene (Ag(I)-NHC) in a short reaction time (∼30 min) at ambient conditions. In principle, it is the first report of Click alkyne-azide cycloaddition catalysed by Ag(I)-NHC catalyst and moreove...

journal_title：Natural product research

authors： Nerella S,Kankala S,Gavaji B

更新日期：2021-01-01 00:00:00

abstract：:Three new flavonol glycosides (1-3), hippophins K-M, were isolated from the seed residue of Hippophae rhamnoides subsp. sinensis. The chemical structures of these three new compounds were identified by 1D, 2D NMR, mass spectroscopy and high resolution electrospray ionization mass spectrometry spectroscopic data and by...

journal_title：Natural product research

authors： Chen C,Gao W,Ou-Yang DW,Zhang J,Kong DY

更新日期：2014-01-01 00:00:00

abstract：:Two new flavanone glycosides have been isolated from the water soluble part of Veratrum nigrum L., belonging to the family Lilica. The structures of 3',4'-dimethoxyl-quercitrin and 4'-methoxyl-glucotricin have been established with the aid of extensive NMR spectroscopic studies. ...

journal_title：Natural product research

authors： Li HL,Tang J,Liu RH,Zhang C,Zhang WD

更新日期：2009-01-01 00:00:00

abstract：:(+)-7-O-Methylisomiroestrol (MeI), a novel chromene, was discovered as a phytoestrogen in the Pueraria candollei var. mirifica (Airy Shaw & Suvat.) Niyomdham (PM) root having been used as an active agent against oestrogen depletion disorders. The identification of PM phytochemicals is crucial for the development of st...

journal_title：Natural product research

authors： Yusakul G,Juengsanguanpornsuk W,Sritularak B,Phaisan S,Juengwatanatrakul T,Putalun W

更新日期：2020-02-20 00:00:00

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：:From the leaves of Mallotus apelta two new benzopyran compounds (1,2) were obtained and their structures were determined using spectroscopic methods. ...

journal_title：Natural product research

authors： An TY,Hu LH,Cheng XF,Chen ZL

更新日期：2003-10-01 00:00:00