Abstract:
:Phytochemical investigation of the methanolic extract of Vangueria agrestis aerial parts led to the isolation and characterization of four monoterpene rhamnosides, two ursane saponins, and six flavonoid glycosides. Of these constituents, are three undescribed monoterpene glycosides, vangagrestosides A-C. The reported constituents comprise the monoterpene glycoside [(2E,6Z)-2,6-dimethyl-8-[O-α-L-rhamnopyranosyl-(1→3)-α-L-rhamnopyranosyl)-oxy]-octadien-1-yl α-L-rhamnopyranoside], the saponins [3-O-[α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl]pomolic acid, and 3-O-[α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranosyl]pomolic acid], and the flavonoids [narcissoside, rutin, hyperoside, guajavarin, biorobin, and nicotifloroside].
journal_name
Nat Prod Resjournal_title
Natural product researchauthors
Osman AG,Fantoukh O,Ali Z,Raman V,Ibrahim MA,Khan IAdoi
10.1080/14786419.2020.1731744subject
Has Abstractpub_date
2020-02-24 00:00:00pages
1-9eissn
1478-6419issn
1478-6427pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1080/14786419.2015.1007138
更新日期:2015-01-01 00:00:00
abstract::Phorbol esters (PEs) are diterpenes present in Jatropha curcas L. seeds and have a myriad of biological activities. Since PEs are toxic, they are considered to be futile in Jatropha-based biodiesel production chain. In the present study, the extracted PEs from Jatropha oil were used as a starting material to synthesis...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2012.716057
更新日期:2013-01-01 00:00:00
abstract::Alkylglycerols (AKGs) are bioactive natural compounds that vary by alkyl chain length and degree of unsaturation, and their absolute configuration is 2S. Three AKGs (5l-5n) were synthesised in enantiomerically pure form, and were characterised for the first time together with 12 other known and naturally occurring AKG...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2019.1686370
更新日期:2019-11-04 00:00:00
abstract::Six compounds were isolated from the stems and leaves of Arachis hypogaea, including a new norsesquiterpene, arahyside A (1), and five known compounds, 4-(2-methoxyethyl)benzene-1,2-diol (2), (1(R,S),2(R,S))-1-phenylpropane-1,2-diol (3), tachioside (4), 1,3-benzenediol (5), demethylmedicarpin (6). Extensive spectrosco...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2019.1607860
更新日期:2020-11-01 00:00:00
abstract::A new triterpenic glucoside, lup-1,5,20(29)-trien-3-O-beta-D-glucopyranoside (4), along with three known phytoconstituents: n-octacosane, friedelin and beta-amyrin, has been isolated from the leaves of Clerodendrum inerme (L.) Gaertn. (Verbenaceae). Structure elucidation was carried out on the basis of chemical and ph...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786410902975566
更新日期:2010-01-01 00:00:00
abstract::The methanolic extract of the aerial parts of Datura innoxia afforded a new withanolide, daturacin, the structure of which was elucidated as (20R, 22S)-21,24-epoxy-1,6-dioxo-14alpha-methoxy-5beta-witha-2,25(27)-dienolide (1) by an analysis of the spectroscopic data, including extensive NMR experiments. ...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786410512331330620
更新日期:2005-09-01 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
pub_type: 杂志文章
doi:10.1080/14786410801997125
更新日期:2008-05-20 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
pub_type: 杂志文章
doi:10.1080/14786419.2019.1628751
更新日期:2019-06-14 00:00:00
abstract::The chemical composition of the volatile organic compounds (VOCs) released from the leaves and flowers of Artemisia fragrans Willd. (Asteraceae) was investigated using headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography (GC) and/or GS/mass spectrometry (GC/MS). The efficiency and reliability ...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786410903108951
更新日期:2010-08-01 00:00:00
abstract::To date, despite extensive investigations, full understanding of the endocannabinoid system remains elusive; in particular, anandamide cellular uptake is a current controversial topic. An iodo-arylazido probe was synthesized from commercially available azelaic acid monomethyl ester, in order to shed light on the anand...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786410500057015
更新日期:2005-06-01 00:00:00
abstract::This paper aims to investigate, for the first time, physicochemical characteristics and antioxidant capacity of Psidium myrtoides ripe and unripe fruit. In addition, essential oil was extracted from fresh leaves (PM-EO) collected in dry and rainy seasons to investigate the influence of seasonality and, after that, to ...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2020.1844689
更新日期:2020-11-09 00:00:00
abstract::Essential oils derived from six different phenophases, namely early vegetative stage, late vegetative stage, early flowering stage, full flowering stage (FFS), late flowering stage and seed shattering stage of Origanum vulgare L. grown in Kumaon region of Uttarakhand, India were investigated by GC and GC-MS. A total o...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2011.602017
更新日期:2012-01-01 00:00:00
abstract::Antioxidant, anticholinesterase and antidiabetic activities of three curcuminoids isolated from the Curcuma longa were simultaneously tested and compared in this study. The highest antioxidant power was detected for curcumin with the applied methods. The drug potentials of curcuminoids for Alzheimer's disease were con...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2017.1299727
更新日期:2017-12-01 00:00:00
abstract::The chemical constituents identified in the essential oils hydrodistilled from the leaves of Amomum gagnepainii T.L.Wu, K.Larsen and Turland and Amomum repoense Pierre ex Gagnep (Zingiberaceae) of Vietnam origin are reported. The chemical analyses were performed by means of gas chromatography-flame ionisation detector...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2017.1346643
更新日期:2018-02-01 00:00:00
abstract::In this study, a methanolic extract of Betula pendula leaves (BLE) was investigated for its gastroprotective effects against 90% ethanol-induced ulcer in rats. Oral pretreatment of rats with BLE (100, 200 and 400 mg kg(- 1)) significantly reduced the incidence of gastric lesions induced by ethanol administration as co...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2012.740036
更新日期:2013-01-01 00:00:00
abstract::A new γ-pyrone derivative, acrepyrone A (1), and three known sorbicillinoids, trichodimerol (2), dihydrotrichodimerol (3) and tetrahydrotrichodimerol (4) were isolated from an endophytic fungus, Acremonium citrinum SS-g13, harboured in the roots of the Chinese medicinal plant Fructus mori. Their structures were determ...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2018.1548462
更新日期:2020-04-01 00:00:00
abstract::The antimicrobial activities of plant extracts have formed the basis of many alternative medicines. In this context, the genus Schinus L. (Anacardiaceae), exhibits many traditional uses in medicine. However, a few studies on the antimicrobial properties of Schinus areira essential oils were conducted. The essential oi...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2019.1675065
更新日期:2019-10-12 00:00:00
abstract::Antibacterial activities of prenylated xanthones from Garcinia mangostana and their synthetic analogues were investigated, and their structure-activity relationships have been studied. γ-Mangostin has shown antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), methicillin sensitive Staphyl...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2012.678348
更新日期:2013-01-01 00:00:00
abstract::A phytochemical investigation of Ajuga forrestii Diels led to the isolation of 14 compounds, including eight neo-clerodane diterpenes (1-8), two phytoecdysteroids (9, 11), one stigmastane sterol (10) and three iridoid glycosides (12-14). The structures of these compounds were identified by spectroscopic methods and a ...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2017.1371161
更新日期:2018-04-01 00:00:00
abstract::Ten compounds (1-10) were purified from the extract of lichens C. faveomaculata, and among these one new triterpenoid, cryptothecin A (1) was characterized through mass spectrometric and 2D NMR spectroscopic analyses. Some of the isolated compounds were assessed for their antimicrobial (1, 6, and 8) and cytotoxic acti...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2019.1648466
更新日期:2019-08-02 00:00:00
abstract::GC/FID and GC-MS analysis revealed germacrene D, bicyclogermacrene, α-cadinol and cubenol as major compounds from aril. Germacrene D, bicyclogermacrene, trans-caryophyllene and δ-elemene are major compounds in fruits. Germacrene D, spathulenol, trans-caryophyllene and caryophyllene oxide are major compounds in leaves....
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2014.987145
更新日期:2015-01-01 00:00:00
abstract::The volatile components of Tuber liyuanum were determined by HS-SPME with GC-MS for the first time. The effects of different fibre coating, extraction time, extraction temperature and sample amount were studied to get optimal extraction conditions. The optimal conditions were SPME fibre of Carboxen/PDMS, extraction ti...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2016.1253082
更新日期:2017-04-01 00:00:00
abstract::A new protopine alkaloid, protomexicine and a new isoflavonoid, mexitin, together with 8-methoxydihydrosanguinarine, 13-oxoprotopine, rutin and quercetrin have been isolated from the aerial part of the methanolic extract of Argemone mexicana. The structures of these compounds have been established by various spectral ...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2010.529809
更新日期:2012-01-01 00:00:00
abstract::A new flavonoid, dihydroglychalcone-A, was isolated from the leaves extract of Glycosmis chlorosperma in addition to two known sulphur-containing amides, dambullin and gerambullin. The structure of the new compound was assigned as 2'-hydroxy-4,6'-dimethoxy-3',4'-(2",2"-dimethylpyrano)dihydrochalcone. The extract of th...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/1057563031000122121
更新日期:2004-02-01 00:00:00
abstract::Moringa oleifera Lam. family Moringaceae is well known for a wide range of biological activities and a complex phytochemical composition. The current study investigates tissue culture protocols for Moringa oleifera leaves and seeds. For static culture initiation, Murashige and skooge (MS) as a basal medium with hormon...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2020.1744137
更新日期:2020-03-25 00:00:00
abstract::This study was designed to investigate possible antidepressant-like effects of the extract prepared from the flowers of Hypericum montbretti Spach. (Guttiferae, Clusiaceae). Phytochemical constituents of the methanolic extract were analysed by HPLC method. The main flavonoid component was detected as rutin, and anothe...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2011.557800
更新日期:2011-09-01 00:00:00
abstract::Two new neoclerodane diterpenoids, barbatin F (1), barbatin G (2) together with four known compounds, scutebata A (3), scutebata B (4), scutebata C (5) and scutebata P (6) were isolated from the whole plant of Scutellaria barbata D.Don. Their structures were elucidated on the basis of spectroscopic studies. In vitro c...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2018.1514399
更新日期:2020-05-01 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
pub_type: 杂志文章
doi:10.1080/14786419.2018.1493590
更新日期:2019-08-01 00:00:00
abstract::Fourteen wild strains of Staphylococcus aureus positive for gene sea were tested for enterotoxins production and the minimum inhibitory concentration of Leptospermum scoparium, Origanum majorana, Origanum vulgare, Satureja montana and Thymus vulgaris essential oils (EOs) were determined. After this trial, bacteria str...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2017.1338284
更新日期:2018-03-01 00:00:00
abstract::Three new aconitine-type C19-diterpenoid alkaloids, taipeinines A-C (1-3), were isolated from the roots of Aconitum taipaicum. The chemical structures of these three compounds were established as (1α,6α,8α,14α,16α)-20-ethyl-8,14-dihydroxy-1,6,16-trimethoxy-4-(methoxymethyl)-aconitane (1), (1α,6α,8α,14α,16β)-20-ethyl-8...
journal_title:Natural product research
pub_type: 杂志文章
doi:10.1080/14786419.2013.861832
更新日期:2014-01-01 00:00:00