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Sesamum indicum; seeds; furans; lignans; spectral analysis; chemical structure; biosynthesis; biochemical pathways; chemical reactions; chemical constituents of plants
Apiaceae; lignans; lactones; spectral analysis; chemical structure; antineoplastic agents; humans; ovarian diseases; chemical constituents of plants; Tanzania
... Four new abscisic acid related compounds (1-4), together with (+)-abscisic acid (5), (+)-β-D-glucopyranosyl abscisate (6), (6S,9R)-roseoside (7), and two lignan glucosides ((+)-pinoresinol mono-β-D-glucopyranoside (8) and 3-(β-D-glucopyranosyloxymethyl)-2- (4-hydroxy-3-methoxyphenyl)-5-(3-hydroxypropyl)-7-methoxy-(2R,3S)-dihydrobenzofuran (9)) were isolated from the antioxidative ethanol extract o ...
Macaranga tanarius; lignans; glucosides; chemical constituents of plants; chemical structure; spectral analysis; stereochemistry; antioxidant activity; Japan
Abstract:
... A lignan glucoside, (+)-pinoresinol 4-O-[6"-O-galloyl]-β-d-glucopyranoside (1), and two megastigmane glucosides, named macarangiosides E and F (2, 3), together with 15 known compounds (4-18) were isolated from leaves of Macaranga tanarius (L.) Müll.-Arg. (Euphorbiaceae). Their structures were elucidated by spectroscopic and chemical analyses. In addition, the absolute stereochemistry of macarangi ...
Agastache; medicinal plants; lignans; spectral analysis; chemical structure; apoptosis; leukemia; cell lines; chemical constituents of plants; South Korea
... The reversed-phase preparative HPLC analysis of the methanol (MeOH) extract of the seeds of Centaurea americana afforded a dibenzylbutyrolactone lignan, 3"-O-caffeoyl arctiin (named americanin), together with five known lignans, arctiin, arctigenin, matairesinol, matairesinoside and lappaol A, and two known phytoecdysteroids, 20-hydroxyecdysone and makisterone A. While the structures of the known ...
Phyllanthus urinaria; plant extracts; phytochemicals; lignans; chemical structure; chemical analysis; reversed-phase high performance liquid chromatography; nuclear magnetic resonance spectroscopy
Abstract:
... HPLC-SPE-NMR has been applied to the analysis of a number of structurally similar lignans present in Phyllanthus urinaria. A reversed-phase HPLC system, using a C8 column eluted with tetrahydrofuran-water-methanol and detected at 225 nm was developed that gave good resolution for seven lignans from Phyllanthus urinaria. Coupling of this system with SPE-NMR provided clean 1H-NMR spectra for nine li ...
Human immunodeficiency virus 1; Justicia procumbens; Oriental traditional medicine; acetates; antiretroviral properties; chemical structure; cytotoxicity; inhibitory concentration 50; lignans; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... Twenty-one lignans including three new ones (1, 2 and 13) were isolated from Justicia procumbens. The chemical structures of the new lignans were determined by spectroscopic means including 1D and 2D NMR analysis. These compounds were evaluated for their cytotoxic and anti-HIV activities. The new secoisolariciresinol dimethyl ether acetate (13) exhibited anti-HIV-1 activity with an IC50 value of 5 ...
terpenoids; complement; human health; lignans; spectral analysis; hemolysis; medicinal properties; stereochemistry; chemical structure; Styrax japonicus; South Korea
anti-inflammatory activity; nitric oxide synthase; Tripterygium wilfordii; interleukin-1; phytochemicals; immunosuppression; macrophages; medicinal plants; mice; lignans; spectral analysis; prostaglandin synthase; gene expression regulation; stereochemistry; chemical structure; Oriental traditional medicine; China
Abstract:
... The extract of Tripterygium wilfordii Hook F. (TwHF), which showed anti-inflammatory and immunosuppressive activities in human clinical trials for rheumatoid arthritis, was subjected to the activity-guided fractionation and spectroscopic characterization of bioactives. A tetrahydrofuran lignan, tripterygiol (1), and eight known compounds, all capable of suppressing pro-inflammatory gene expression ...
... A new flavonolignan, anthelminthicol A (1), together with four known compounds, was isolated from the EtOAc extracts of the seeds of Hydnocarpus anthelminthica. Their structures were elucidated using extensive spectroscopic techniques. Bioassay showed that compounds 3–5 could inhibit nitric oxide production in LPS-stimulated RAW 264.7 macrophage cell lines, with IC₅₀ values of 7.81, 9.38, and 10.5 ...
... Bioactivity-guided separation of an antihyperglycemic extract from the leaves of Dodecadenia grandiflora afforded two phenylpropanoyl esters of catechol glycosides (1 and 4) and two lignane bis(catecol glycoside)esters (2 and 3). Their structures were established on the basis of extensive spectroscopic analysis (1D and 2D-NMR, MS). Compounds 2 and 3 are believed to be derived from dimerization via ...
Zhang, H.J.; Tamez, P.A.; Vu Dinh Hoang.; Ghee Teng Tan.; Nguyen van Hung.; Le Thi Xuan.; Le Mai Huong.; Nguyen Manh Cuong.; Do Thi Thao.; Soejarto, D.D.; Fong, H.H.S.; Pezzuto, J.M.
2,2-diphenyl-1-picrylhydrazyl; Urtica; antioxidants; chemical structure; flavonoids; flowers; lignans; median effective concentration; phenolic acids; spectral analysis
Abstract:
... Eleven compounds (1–11), including two new compounds (1, 2), were isolated from the antioxidant portion of the alcoholic extract of Urtica fissa flowers. Their chemical structures were elucidated from extensive spectroscopic analysis. The results of activity evaluation indicated that some compounds of phenolic acids (3, 4), flavonoids (7, 9, 10), and lignans (1, 6) possess significant activities o ...
Premna; acids; antioxidant activity; bark; catalpol; chemical structure; free radical scavengers; lignans; nuclear magnetic resonance spectroscopy; stems
Abstract:
... Two new furofuran lignans premnadimer (1) and 4β-hydroxyasarinin-1-O-β-glucopyranoside (2) along with 9 known compounds have been isolated from the stem bark of Premna integrifolia. Their chemical structures were elucidated using detailed spectroscopic studies. Their relative configurations were established using analysis of NOESY correlations and coupling constants observed in 1H NMR. Compounds 1 ...
... Sesamin and sesaminol triglucoside in sesame seeds are major lignans that display an abundance of biological activities. Although their antioxidative activity in vitro is weak, they have been reported to suppress oxidative stress in vivo. We investigated the production of new antioxidative lignans from sesame lignans by culturing with the genus Aspergillus to enhance the function of food materials ...
Phyllanthus fraternus; Plasmodium falciparum; Securinega; alkaloids; antimalarials; antiparasitic properties; chemical reactions; chemical structure; inhibitory concentration 50; lignans; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... The chemical investigation of the antimalarial plant Phyllanthus fraternus G. L. Webster (Phyllanthaceae) resulted in the discovery of the Securinega alkaloid (+)-allonorsecurinine (1), previously reported as a synthetic compound, together with the known ent-norsecurinine (2), nirurine (3), bubbialine (4), epibubbialine (5) and the lignan phyllanthin (6). The structure and absolute configuration o ...
Liu Yixi; Young Kelly; Rakotondraibe L. Harinantenaina; Brodie Peggy J.; Wiley Jessica D.; Cassera Maria B.; Callmander Martin W.; Rakotondrajaona R.; Rakotobe Etienne; Rasamison Vincent E.; TenDyke Karen; Shen Yongchun; Kingston David G. I.
... The two new lignans 3α-O-(β-d-glucopyranosyl)desoxypodophyllotoxin (1) and 4-O-(β-d-glucopyranosyl)dehydropodophyllotoxin (2) were isolated from Cleistanthus boivinianus, together with the known lignans deoxypicropodophyllotoxin (3), (±)-β-apopicropodophyllin (4), (−)-desoxypodophyllotoxin (5), (−)-yatein (6), and β-peltatin-5-O-β-d-glucopyranoside (7). The structures of all compounds were charact ...
... Eight compounds were isolated from the methanolic extract of the twigs ofCeltis sinensis through repeated silica gel and Sephadex LH-20 column chromatography. Their chemical structures were elucidated as two triterpenoids, germanicol and epifriedelanol, two amide compounds, frans-N-caffeoyltyramine andcis-N-coumaroyltyramine, two lignan glycoside, pinoresinol glycoside and pinoresinol rutinoside, ...
... Natural arylnaphthalene lactones are representative lignans that are found in various dietary and medicinal plants. Their unique structural features and significant pharmacological activity have attracted considerable attention from both synthetic and medicinal chemists. Owing to their unique structural features such as relative rigid tetracyclic skeleton, structural diversity of more than five su ...
Phyllanthus; chemical structure; glycosides; lignans; spectroscopy
Abstract:
... Two new arylnaphthalene lignan glycosides, named reticulatusides A (1) and B (2), together with eight known compounds were isolated from the 95% EtOH extract of the whole plant of Phyllanthus reticulatus. The structures of the new compounds were elucidated by spectroscopic methods. ...
Aristolochiaceae; medicinal plants; phytochemicals; lignans; chemical structure; spectral analysis; Brazil
Abstract:
... Aryltetralol and aryltetralone lignans were isolated from the hexane extracts of the roots of Holostylis reniformis. Their structures were determined by spectroscopic methods and chemical transformations. ...
chemical structure; chromatography; derivatization; lignans; organic chemistry; stereoselective synthesis
Abstract:
... Lignans are a structurally diverse class of natural products with extensive pharmacological effects. Here we report the syntheses of both natural and unnatural dibenzylbutane lignans from a common intermediate, which is prepared in five steps from known materials. Derivatization of this intermediate affords lignans featuring contiguous stereocenters in a high diastereomeric purity after chromatogr ...
... A competent and general asymmetric synthesis of 7′-hydroxydibenzylbutyrolactone lignans such as (7′S)-hydroxymatairesinol and (7′S)-hydroxyarctigenin has been reported from N-succinyl-2-oxazolidinone in six steps where diastereoselective aldol reaction and stereoselective alkylation serve as the key steps. ...
alkylation; chemical structure; lignans; stereoselectivity
Abstract:
... The glycolate alkylation approach for the total synthesis of 8-O.6′ and 8-O.4′-neolignans has been optimized affording the natural products with high overall yields and excellent stereoselectivity. The developed approach can be further utilized towards the synthesis of many natural and unnatural neolignans. This is the first approach for the synthesis of neolignans using asymmetric glycolate alkyl ...
bioactive properties; chemical reactions; chemical structure; lignans; stereochemistry; stereoselectivity
Abstract:
... Furofurans are one of the largest sub-types of classical lignans which have been found to possess a broad range of important biological activities. Tremendous efforts have been directed to develop synthetic methodologies for the synthesis of furofurans, especially in a stereoselective manner, due to their interesting bioactivities associated with the structural and stereochemical complexity. This ...
Oriental traditional medicine; Piper betle; active ingredients; antibiotic resistance; bacteria; bioassays; chemical structure; circular dichroism spectroscopy; cytotoxicity; gel chromatography; growth models; herbs; lignans; methicillin; methicillin-resistant Staphylococcus aureus; norfloxacin; nuclear magnetic resonance spectroscopy; silica gel; synergism; therapeutics; transporters
Abstract:
... This research seeks to address the problem of methicillin-resistant Staphylococcus aureus (MRSA) by discovering synergistic antibacterial natural substances from traditional Chinese herbs using antibacterial bioassays. Six compounds, including three neolignans (−)-acuminatin (1), (−)-denudatin B (2), puberulin D (3), and three benzocyclohexane oxide derivatives ferrudiol (4), ellipeiopsol B (5) an ...
humans; cell growth; cytotoxicity; Peperomia; plant extracts; cultured cells; lignans; spectral analysis; chemical constituents of plants; chemical structure; Oriental traditional medicine; anticarcinogenic activity; China
biochemical pathways; chemical reactions; chemical structure; lignans; organic chemistry; stereoselectivity
Abstract:
... A bioinspired asymmetric total synthesis of a structurally unique subtype of lignan, namely, (−)-gymnothelignan V, was achieved. The key synthetic sequences involved reduction of the eupomatilone skeleton leading to (−)-gymnothelignan J followed by the formation of the corresponding oxocarbenium ion and stereoselective intramolecular Friedel–Crafts reaction. Our synthetic approach provides the inf ...
biochemical pathways; chemical reactions; chemical structure; lignans; phenol
Abstract:
... Bioinspired total synthesis of gymnothelignan N was accomplished in 13 steps and 6.7% overall yield. The synthesis features a syn Evans aldol reaction, an intramolecular hydrogenative dehydration reaction, and a phenol oxidative dearomatization/Friedel–Crafts reaction, which provides a new plausible biosynthetic pathway for the gymnothelignans and other symbiotic members. Meanwhile, another tetrah ...
Arctium lappa; Thanatephorus cucumeris; anti-inflammatory activity; anti-inflammatory agents; biocatalysts; biotransformation; chemical reactions; chemical structure; enzymatic hydrolysis; high performance liquid chromatography; lignans; methanol; monitoring; pesticides; screening; sugars
Abstract:
... In the preliminary screening for the plant-derived pesticides against Rhizoctonia solani Kühn AG-4 (RS AG-4), the indicator compounds arctiin (1) and arctigenin (2) in methanol extracts of Arctium lappa L. were consumed and transformed to other compounds. Thus, in the present study RS AG-4 was used as a biocatalyst and the biotransformation of arctiin (1) was investigated. Conversion of arctiin (1 ...
biosynthesis; isotope labeling; stems; chemical reactions; beta-glucosidase; chemical structure; Liriodendron tulipifera; lignans; resinols; phenylalanine; glucosides; leaves; Japan
Abstract:
... To clarify the biosynthesis of syringyl lignans and lignan formation by stereoselective coupling of monolignols, formation of (+)-syringaresinol and (+)-pinoresinol inLiriodendron tulipifera were investigated by means of feeding experiments. Following individual administration ofL-[U-¹⁴C]phenylalanine and [8-¹⁴C]sinapyl alcohol to excised shoots ofL. tulipifera and their subsequent metabolism for ...
Barleria; aerial parts; chemical reactions; chemical structure; lignans; spectral analysis
Abstract:
... Two novel 4,8,8-trimethylcyclooct-2-enone derivatives, chakyunglupulins A and B, together with six known lignans were isolated from the aerial part of Barleria lupulina. The structures of new compounds were established by extensive spectroscopic data and HR-MS, and their absolute configurations were determined by a combination of NOE experiment and application of the modified Mosher’s method. ...
Aspergillus fumigatus; Plasmodium falciparum; Staphylococcus aureus; Zanthoxylum; alkaloids; bark; chemical analysis; chemical composition; chemical structure; inhibitory concentration 50; leaves; lignans; spectroscopy
Abstract:
... From the leaves and bark of Zanthoxylum monophyllum, a new lignan, 3-methoxy-3′,4′-methylenedioxylignan-4,8,9,9′-tetraol (1), has been isolated along with 22 known compounds (2-23), fifteen of them reported for the first time from Z. monophyllum. Their chemical structures were elucidated using detailed spectroscopic studies and chemical analysis. All compounds were evaluated for antimicrobial and ...
... The stem of Siam weed, an invasive exotic plant, was delignified by Acetosolv and Milox processes. The lignin products, Acetosolv lignin (AL) and Milox lignin (ML), were characterized in order to investigate the chemical structures and thermal characteristics. It was found that the weed lignin was syringyl-guaiacyl (GS) type lignin. Both lignins showed similarity in elemental components, functiona ...
Epimedium koreanum; aerial parts; chemical composition; chemical structure; chemotaxonomy; flavonoids; lignans; mass spectrometry; nuclear magnetic resonance spectroscopy; phenols
Abstract:
... In this study, 21 compounds were isolated from the aerial parts of Epimedium koreanum Nakai, including 6 phenols (1–5 and 10), 4 lignans (6–9) and 11 flavonoids (11–21). The chemical structures of those isolates were established after extensive one-and two-dimensional nuclear magnetic resonance and mass spectroscopy analyses. This is the first report of compounds 2, 3, 4 and 9 in E. koreanum and o ...
Saussurea; medicinal plants; chemical constituents of plants; acetylene; glycosides; lignans; phytochemicals; chemical structure; spectral analysis; stereochemistry; cytotoxicity; anticarcinogenic activity; human diseases; human health; China
Abstract:
... Thirty-six naturally occurring compounds, including four C10-acetylenic glycosides and a lignan, were isolated from the whole plants of Saussurea cordifolia. Their structures were elucidated by means of spectroscopic and chemical methods to be 4,6-decadiyne-1-O-β-d-apiofuranosyl-(1 leads to 6)-β-d-glucopyranoside (1), 4,6-decadiyne-1-O-α-l-rhamnopyranosyl-(1 leads to 6)-β-d-glucopyranoside (2), (8 ...
Solidago canadensis; chemical composition; chemical structure; hamsters; high fat diet; lignans; lipemic effect; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... Two new compounds, 8-dehydroxymethylvisanol (1) and 9-O-[3-O-acetyl-β-d-glucopyranosyl]-4-hydroxy-cinnamic acid (4), together with two known lignans, visanol (2) and 9-aldehydevibsanol (3), were isolated from the 80% EtOH extract of Solidago canadensis. The structures of the two new compounds were elucidated on the basis of 1D, 2D NMR, and mass spectral analysis. All the lignans exhibited moderate ...
Polyalthia; alkaloids; antineoplastic activity; branches; chemical composition; chemical structure; cytotoxicity; ethanol; gossypol; human cell lines; humans; inhibitory concentration 50; lignans; neoplasm cells; spectroscopy
Abstract:
... Twelve known compounds, including eight alkaloids, three lignans and one gossypol derivative, were isolated from the branches of Polyalthia rumphii (Blume ex Hensch.) Merr., Annonaceae. The chemical structures were determined by spectroscopic methods and comparison with literature data. All the isolates were evaluated the cytotoxicity against three human cancer cell lines: Hela, MCF-7 and A549, th ...
Crataegus pinnatifida; carbon; chemical composition; chemical structure; chemotaxonomy; coumaric acids; flavonoids; leaves; lignans; nuclear magnetic resonance spectroscopy; spectral analysis; stable isotopes; triterpenoids
Abstract:
... The phytochemical investigations on the leaves of Crataegus pinnatifida led to the isolation of 20 compounds, including seven triterpenoids (1-7), three hydroxycinnamic acids (8-10), three lignans (11-13) and seven flavonoids (14-20). All chemical structures were established on the basis of NMR (1H NMR, 13C NMR) spectroscopic data. Meanwhile, compounds 3-12 are reported for the first time from Crat ...
Sanguisorba officinalis; chemical composition; chemical structure; chemotaxonomy; flavonoids; glycosides; lignans; monoterpenoids; phenols; roots; spectral analysis; triterpenoids
Abstract:
... Phytochemical investigation of the roots of Sanguisorba officinalis L. led to the isolation of thirty-eight compounds, including seventeen triterpenoids (1–17), six monoterpenoid glycosides (18–23), six flavonoids (24–29), six phenols (30–35), two glycosides (36–37), and one lignan (38). The chemical structures of these compounds were elucidated on the basis of spectral data and by comparisons of ...
Scorzonera divaricata; benzene derivatives; caffeic acid; chemical composition; chemical structure; chemotaxonomy; electrospray ionization mass spectrometry; lignans; nuclear magnetic resonance spectroscopy; phenylpropanoids; phytochemicals; roots; scopoletin; sterols
Abstract:
... The phytochemical study of the roots of Scorzonera divaricata Turcz led to the isolation of 27 compounds, including eight sterols (1–8), one lignan (9), two cumarins (10, 11), five phenylpropanoids (12–16), six benzene derivatives (17–22), methyl-β-D-fructofuranoside (23), monolinolein (24), and three aliphatic acids (25–27). The structures of isolated compounds were identified using NMR and ESI-M ...
Elsholtzia; X-ray diffraction; apigenin; chemical composition; chemical structure; glycosides; lignans; luteolin; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... A new lignan glycoside, 7α, 7′β-bis-(4-hydroxy-3-methoxyphenyl)-7,9′:7′,9-diepoxylignan-8αH,8′α-O-β-d-(2″,7′α-epoxy)-glucopyranoside, named elshrugulosain (1), has been isolated from the EtOH extract of Elsholtzia rugulosa, together with six known compounds, ( − )-bornyl (E)-3,4,5-trimethoxycinnamate, apigenin, luteolin, apigenin-7-O-β-d-glucopyranoside, luteolin-7-O-β-d-glucopyranoside, and luteo ...
Alzheimer disease; Galanthus; acetylcholinesterase; bioactive properties; bulbs; chemical composition; chemical structure; cholinesterase; cholinesterase inhibitors; indigenous species; isoquinoline alkaloids; lignans; ornamental value; plant extracts; research
Abstract:
... Amaryllidaceae family, consisting of economically important plants with ornamental value, is very well-known for its isoquinoline alkaloids with variable biological activities and chemical structures. Among these alkaloids, an effective acetylcholinesterase inhibitor galanthamine, is prescribed widely in the treatment of Alzheimer's disease. Plants of the Amaryllidaceae family are therefore, subje ...
Coix lacryma-jobi; chemical structure; chromatography; circular dichroism spectroscopy; glycosides; lignans; nuclear magnetic resonance spectroscopy; roots; spectral analysis
Abstract:
... A new lignan glycoside, 1-[3,6-(4,4⿲-dihydroxy-3,3⿲-dimethoxy-δ-truxinyl)-β-fructofuranosyl]-α-glucopyranoside (1), named coixlachryside A, together with nine known simple phenolic compounds (311) were isolated from the roots of Coix lachryma-jobi var. ma-yuen using various chromatographic methods. Their chemical structures were determined based on the spectroscopic data interpretation, particula ...
2,2-diphenyl-1-picrylhydrazyl; Sesamum indicum; acetonitrile; antioxidant activity; chemical structure; color; cultivars; lignans; nuclear magnetic resonance spectroscopy; oils; seeds; sesame seed; solvents
Abstract:
... The compositional components (lignan, protein, and oil) as well as antioxidant properties of white and black sesame seeds from different crop years were evaluated. Various solvent extracts of sesame seeds possessed two major peaks and their chemical structures were confirmed as sesamin (1) and sesamolin (2) using NMR spectroscopy and HPLC–DAD–ESI/MS technique. Moreover, their optimal extraction wa ...
Kadsura; phytochemicals; triterpenoids; lactones; lignans; chemical structure; spectral analysis; stereochemistry; medicinal properties; antiviral properties; Human immunodeficiency virus 1
Abstract:
... Phytochemical investigation of the stems of Kadsura heteroclita led to isolation of 16 compounds, including the triterpenoid named longipedlactone J (2), and two dibenzocyclooctadiene type lignans named heteroclitin I and J (3, 4). Compounds 8-10, 14, and 15 were weakly active as anti-HIV agents, whereas compounds 6 and 12 exhibited moderate anti-HIV activity with EC50 values of 1.6 μg/mL, and 1.4 ...
Xiaojuan Wang; Jiabao Liu; Pankaj Pandey; Frank R. Fronczek; Robert J. Doerksen; Jiabao Chen; Xinzhu Qi; Peicheng Zhang; Daneel Ferreira; Frederick A. Valeriote; Hua Sun; Shuai Li; Mark T. Hamann
Kadsura; X-ray diffraction; acetaminophen; carbon; chemical reactions; chemical structure; chemoprevention; circular dichroism spectroscopy; crystallography; cytotoxicity; hepatoprotective effect; lignans; nuclear magnetic resonance spectroscopy; roots
Abstract:
... Kadsuraols A–C (1–3), which are tetrahydrocyclobutaphenanthrofuranone-type lignans with a new carbon skeleton comprising a four-membered ring across C-1′–C-8, have been isolated from the roots of Kadsura longipedunculata. Their structures and absolute configurations were unambiguously determined using nuclear magnetic resonance, X-ray diffraction crystallography, DP4+ calculations, and computed an ...
lignans; spectral analysis; chemical constituents of plants; chemical structure; stereochemistry; Aristolochia; Brazil
Abstract:
... (8S,8'R,9S)-, (8R,8'R,9R)-, and (8R,8'R,9S)-cubebins, together with (8R,8'R,8"R,8'''R,9R,9"S)-bicubebin, were isolated from Aristolochia lagesiana and Aristolochia pubescens. Their structures were determined by spectroscopic methods, including 1H and 13C NMR spectroscopy at low temperatures, and by chemical transformations. ...
branches; lignans; spectral analysis; chemical structure; bioassays; cell differentiation; antineoplastic agents; disease prevention; chemical constituents of plants; Indonesia
Quercus petraea; bitterness; chemical reactions; chemical structure; detection limit; heartwood; lignans; quantitative analysis; sensory evaluation; taste; wines; wood
Abstract:
... The modification of wine taste during oak ageing is due to the release of non-volatile compounds from wood. Among these molecules, some lignans have been previously described as exhibiting bitterness. However, the lack of knowledge concerning this class of compounds in oak wood led us to explore both their structural diversity and their sensory properties. Nine lignans were isolated from extracts ...
Oriental traditional medicine; Zanthoxylum schinifolium; anticarcinogenic activity; apoptosis; chemical structure; colorectal neoplasms; common cold; coumarins; diarrhea; humans; inhibitory concentration 50; jaundice; leaves; leukemia; lignans; methanol; mitogen-activated protein kinase; nuclear magnetic resonance spectroscopy; pericarp; prostatic neoplasms; shrubs; stems; stomach
Abstract:
... Zanthoxylum schinifolium is an aromatic shrub, and its pericarp and leaves are widely used in culinary applications in East Asian countries. It has also long been used in traditional Oriental medicine for treating the common cold, stomach ache, diarrhea, and jaundice. In this study, we identified two new compounds, zanthoxyloside (1) and schinifolisatin A (13), along with 23 known coumarins (2–12) ...
Klausmeyer, Paul; Zhou, Qin; Scudiero, Dominic A.; Uranchimeg, Badarch; Melillo, Giovanni; Cardellina, John H. II; Shoemaker, Robert H.; Chang, Ching-jer; McCloud, Thomas G.
... Examination of the aerial parts of Achillea clavennae afforded eight guaianolides (1-8), three bisabolenes (9-11), four flavonols (12-15), sesamin (lignan) and isofraxidin (coumarin). The structures of the new compounds (2, 4, 5, 7 and 10) were determined by spectroscopic methods. The antiproliferative action of 2, 8, 9 and 12 were tested to HeLa, K562 and Fem-X human cancer cell lines. Guaianolid ...
DNA damage; Garcinia subelliptica; phenols; lignans; spectral analysis; heartwood; Justicia; chemical structure; stereochemistry; Taiwan
Abstract:
... Five 2,4,6-prenylated phloroglucinols, garcinielliptones HA (1), HB (2), HC (3), HD (4) and HE (5), were isolated from the heartwood of Garcinia subelliptica Merr. Their structures, including relative configurations, were elucidated by means of spectroscopic data analysis. The ability of phloroglucinols, 1-5 and lignans, tuberculatin (8), justicidin A (9), procumbenoside A (10) and ciliatosides A ...