Trần Hồng Quang
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View article: An Oxazole Alkaloid, Terpenoids, and Cyclodipeptides With Cytotoxic and Nitric Oxide Inhibitory Effects From a Mangrove‐Derived Fungus <i>Trichoderma</i> sp. GXT‐22.1
An Oxazole Alkaloid, Terpenoids, and Cyclodipeptides With Cytotoxic and Nitric Oxide Inhibitory Effects From a Mangrove‐Derived Fungus <i>Trichoderma</i> sp. GXT‐22.1 Open
Chemical investigation of the mangrove‐derived fungus Trichoderma sp. GXT‐22.1 led to the isolation and identification of 10 secondary metabolites, including one new compound, 5′‐(4‐methoxyphenyl)‐1′,3′‐oxazole ( 1 ), one new natural compo…
View article: Culcinoside E, a new sulfated steroidal biglycoside from the starfish <i>Culcita novaeguineae</i>
Culcinoside E, a new sulfated steroidal biglycoside from the starfish <i>Culcita novaeguineae</i> Open
Using various chromatographic separations, six steroid glycoside derivatives, including one new compound named culcinoside E (1), were isolated from the methanol extract of the starfish Culcita novaeguineae. Their structures were confirmed…
View article: In vitro and in silico anti-inflammatory effect of minor constituents from the roots of <i>Polygala arillata</i> Buch.-Ham. ex D. Don
In vitro and in silico anti-inflammatory effect of minor constituents from the roots of <i>Polygala arillata</i> Buch.-Ham. ex D. Don Open
Vietnamese traditional medicine has utilised the roots of Polygala arillata Buch.-Ham. ex D. Don to treat acute arthritis, rheumatism, pain, and as a tonic ingredient. In this study, phytochemical analysis of the roots of P. arillata resul…
View article: Glycoside constituents from <i>Cayratia geniculata</i>
Glycoside constituents from <i>Cayratia geniculata</i> Open
Using various chromatographic separations, six glycoside derivatives (1–6), including one new ent-labdane glucoside named cayratioside (1), were isolated from the methanol extract of Cayratia geniculata stems and leaves. Their structures w…
View article: Caffeoylquinic acid esters, lignans and flavones from <i>Yua thomsonii</i> with cytotoxic and nitric oxide inhibitory activities
Caffeoylquinic acid esters, lignans and flavones from <i>Yua thomsonii</i> with cytotoxic and nitric oxide inhibitory activities Open
Phytochemical study on the aerial parts of Yua thomsonii resulted in the isolation of 11 secondary metabolites, including a new caffeoyl quinic acid derivative, 3-O-trans-caffeoyl-4-O-acetylquinic acid methyl ester (1), a new dihydrobenzof…
View article: Fusarium foetens AQF6 Isolated from Amentotaxus ynnanensis H.L.Li as a Prolific Source of Antioxidant Compounds
Fusarium foetens AQF6 Isolated from Amentotaxus ynnanensis H.L.Li as a Prolific Source of Antioxidant Compounds Open
Amentotaxus yunnanensis H.L.Li is a threatened conifer distributed only in China, Laos, and Vietnam, whose fungal endophytes have not been exploited yet. The aims of this study were to screen and characterize antioxidant metabolites from e…
View article: Cytotoxic and Antimicrobial Secondary Metabolites from Penicillium hetheringtonii IMBC-NMTP04
Cytotoxic and Antimicrobial Secondary Metabolites from Penicillium hetheringtonii IMBC-NMTP04 Open
Chemical investigation of the sesame-associated fungal strain Penicillium hetheringtonii IMBC-NMTP04 resulted in isolation of five compounds, penicitrinone A (1), dihydrocitrinin (2), janthinone (3), coniochaetone B (4), and 9-oxo-10(E),12…
View article: Screening and characterization of paclitaxel-producing fungus \(\textit{Talaromyces wortmannii}\) WQF18 isolated from \(\textit{Cephalotaxus mannii }\)Hook. f..
Screening and characterization of paclitaxel-producing fungus \(\textit{Talaromyces wortmannii}\) WQF18 isolated from \(\textit{Cephalotaxus mannii }\)Hook. f.. Open
Cephalotaxus mannii Hook. f. is a rare evergreen conifer native listed in the International Union for Conservation of Nature (IUCN) Red List, which is utilized for leukemia treatment. Although endophytic fungi from C. mannii was reported b…
View article: \(\textit{Fusarium fujikuroi}\) WQF5 isolated from \(\textit{Cephalotaxus mannii }\)Hook.f. as a producer of antibacterial agent and paclitaxel
\(\textit{Fusarium fujikuroi}\) WQF5 isolated from \(\textit{Cephalotaxus mannii }\)Hook.f. as a producer of antibacterial agent and paclitaxel Open
Cephalotaxus mannii Hook.f is a rare medicinal plant used for the treatment of leukemia, however, its fungal endophytes with antibacterial and anticancer properties have not been exploited yet. In this study, six fungal isolates were recov…
View article: Herrmananes A and B, two new sulfated hydrocarbons from the sea cumber <i>Stichopus herrmanni</i>
Herrmananes A and B, two new sulfated hydrocarbons from the sea cumber <i>Stichopus herrmanni</i> Open
Using various chromatographic separations, two new sulfated hydrocarbons namely herrmananes A and B ( 1 and 2 ) were isolated from the aqueous fraction of the methanol residue of the sea cucumber Stichopus herrmanni . Their chemical struct…
View article: Phenolic glycosides from the peels of durian fruits <i>Durio zibethinus</i> L.
Phenolic glycosides from the peels of durian fruits <i>Durio zibethinus</i> L. Open
In the present study, six phenolic glycosides, including one new durianol F ( 1 ) and five known compounds, durianol A ( 2 ), syringaresinol glucoside ( 3 ), 4‐ O ‐ β ‐glucopyranosyl sinapic acid methyl ester ( 4 ), quercetin‐3‐glucopyrano…
View article: Triterpene Tetraglycosides From <i>Stichopus Herrmanni</i> Semper, 1868
Triterpene Tetraglycosides From <i>Stichopus Herrmanni</i> Semper, 1868 Open
Using various column chromatographic methods, 5 triterpene tetraglycosides (1−5), including one new compound, namely holothurin A 6 (1), were obtained from the water soluble part of the methanol extract of the sea cucumber Stichopus herrma…
View article: Sulfated Naphthopyrones and Anthraquinones from the Vietnamese Crinoid <i>Comanthus delicata</i>
Sulfated Naphthopyrones and Anthraquinones from the Vietnamese Crinoid <i>Comanthus delicata</i> Open
Three new sulfated naphthopyrone derivatives namely delicapyrons F-H (1-3) and two new sulfated anthraquinone derivatives namely delicaquinons A (4) and B (5), together with 6-methoxycomaparvin-5-methylether-8-O-sodium sulfate (6), 6-metho…
View article: Vietnam in transition : education, culture and ethics : a reader and curriculum
Vietnam in transition : education, culture and ethics : a reader and curriculum Open
This book reflects on the process of constructing a curriculum for Vietnam studies designed for educators and researchers in the field of social studies. Based on a selection of scholarly works, proceeds of seminars and conferences on educ…
View article: Secondary metabolites from the tubers of <i>Dioscorea persimilis</i>
Secondary metabolites from the tubers of <i>Dioscorea persimilis</i> Open
Seven secondary metabolites were isolated from the aqueous fraction of Dioscorea persimilis tubers using combined chromatographic techniques. Their structures were identified as 4‐ O ‐(6′‐ O ‐glucosyl‐4′′‐hydroxybenzoyl)‐4‐hydroxybenzyl al…
View article: Cytotoxic and antimicrobial benzodiazepine and phenolic metabolites from <i>Aspergillus ostianus</i><scp>IMBC‐NMTP03</scp>
Cytotoxic and antimicrobial benzodiazepine and phenolic metabolites from <i>Aspergillus ostianus</i><span>IMBC‐NMTP03</span> Open
Six benzodiazepine alkaloids and two phenolics were isolated from an ethyl acetate extract of the fungal strain Aspergillus ostianus IMBC‐NMTP03 fermentation culture. Their chemical structures were elucidated as circumdatins D ( 1 ), E ( 2…
View article: Anti‐inflammatory metabolites from a marine sponge‐associated fungus <i>Aspergillus</i> sp. <scp>IMBC‐FP2</scp>.05
Anti‐inflammatory metabolites from a marine sponge‐associated fungus <i>Aspergillus</i> sp. <span>IMBC‐FP2</span>.05 Open
Chemical investigation of the marine sponge‐derived fungal strain Aspergillus sp. IMBC‐FP2.05 resulted in isolation of five compounds, including JBIR‐74 ( 1 ), homogentisic acid ( 2 ), methyl (2,5‐dihydroxyphenyl)acetate ( 3 ), 3‐chloro‐2,…
View article: Secondary metabolites from a marine sponge‐associated fungus <i>Xenomyrothecium</i> sp. <scp>IMBC‐FP2</scp>.11
Secondary metabolites from a marine sponge‐associated fungus <i>Xenomyrothecium</i> sp. <span>IMBC‐FP2</span>.11 Open
In the study, seven compounds were isolated from an EtOAc extract of the marine‐derived fungal strain Xenomyrothecium sp. IMBC‐FP2.11, including (3 R ,4 R )‐4‐hydroxymellein ( 1 ), (3 R ,4 S )‐4‐hydroxymellein ( 2 ), trans ‐3,4‐dihydro‐3,4…
View article: Chemical Constituents from the Branches and Leaves of <i>Alchornea trewioides</i>
Chemical Constituents from the Branches and Leaves of <i>Alchornea trewioides</i> Open
Two new megastigmane glucosides namely trewiosides A (1) and B (2), along with 20α-hydroxypregn-4-en-3-one β-D-glucopyranoside (3), sugeroside (4), and schizandriside (5) were isolated from the branches and leaves of Alchornea trewioides. …
View article: Limonoids From <i>Choerospondias axillaris</i>
Limonoids From <i>Choerospondias axillaris</i> Open
Eight limonoids (1-8), including 1 new compound named as axillariol A (1), were isolated from the dichloromethane extract of Choerospondias axillaris branches and leaves using various chromatographic separations. Their structures were conf…
View article: Diterpenoids and Flavonoids from <i>Andrographis paniculata</i>
Diterpenoids and Flavonoids from <i>Andrographis paniculata</i> Open
Chemical investigation of the aerial parts of Andrographis paniculata resulted in isolation of nine compounds, including a new ent-labdane diterpenoid, andrographic acid methyl ester (1), a new chalcone glucoside, pashanone glucoside (5), …
View article: Sulphated flavones and pregnane-type steroids from <i>Helicteres viscida</i>
Sulphated flavones and pregnane-type steroids from <i>Helicteres viscida</i> Open
In our search for anti-inflammatory constituents from Vietnamese plants, the methanolic extract of Helicteres viscida was found to exhibit inhibitory effect on LPS-induced NO production in RAW264.7 cells. Phytochemical investigation of thi…
View article: Chemical constituents from the soft coral <i>Sinularia digitata</i>
Chemical constituents from the soft coral <i>Sinularia digitata</i> Open
Using various chromatographic separations, six known compounds namely (1 R *,2 E ,4 R *,7 E ,10 S *,11 S *,12 R *)‐10,18‐diacetoxy‐dolabella‐2,7‐dien‐6‐one ( 1 ), emblide ( 2 ), sarcophine ( 3 ), (3 R )‐4‐[(2 R ,4 S )‐4‐acetoxy‐2‐hydoxy‐2,…
View article: Anti‐inflammatory phenylpropanoid glycosides from the roots of <i>Polygala aureocauda</i> Dunn
Anti‐inflammatory phenylpropanoid glycosides from the roots of <i>Polygala aureocauda</i> Dunn Open
Chemical study on a methanol extract of the roots of Polygala aureocauda Dunn. resulted in the isolation of three phenylpropanoid glycosides, including β‐D‐[3‐ O ‐(3,4,5‐trimethoxycinnamoyl)]‐fructofuranosyl‐α‐D‐[6‐ O ‐(4‐methoxybenzoyl)]‐…
View article: Ursane‐ and oleane‐type triterpene glycosides from <i>Ilex godajam</i>
Ursane‐ and oleane‐type triterpene glycosides from <i>Ilex godajam</i> Open
Seven triterpenoid glycosides namely ilekudinoside D ( 1 ), kudinoside H ( 2 ), mateside ( 3 ), suavissimoside R1 ( 4 ), 3 β ‐[( α ‐L‐arabinopyranosyl)oxy]‐19 α ‐hydro‐xyolean‐12‐en‐28‐oic acid 28‐ β ‐D‐glucopyranosyl ester ( 5 ), ilexosid…
View article: Three New Constituents From the Parasitic Plant <i>Balanophora laxiflora</i>
Three New Constituents From the Parasitic Plant <i>Balanophora laxiflora</i> Open
Three new constituents (1-3) were isolated from the whole plant of Balanophora laxiflora. Their chemical structures were elucidated by extensive analysis of high-resolution electrospray ionization mass spectrometry and nuclear magnetic res…
View article: Two New Steroidal Alkaloid Saponins from the Whole Plants of <i>Solanum nigrum</i>
Two New Steroidal Alkaloid Saponins from the Whole Plants of <i>Solanum nigrum</i> Open
Two new steroidal alkaloid saponins, solanigrosides Q and R (1 and 2), together with four known compounds khasianine (3), solamargine (4), solasonine (5), and soladulcoside A (6) were isolated from the whole plants of Solanum nigrum. The s…
View article: Isolation of spirostanol glycosides from <i>Solanum nigrum</i>
Isolation of spirostanol glycosides from <i>Solanum nigrum</i> Open
Four spirostanol glycosides, dioscin ( 1 ), asperin ( 2 ), degalactotigonin ( 3 ), and soladulcoside A ( 4 ) were isolated from the whole plants of Solanum nigrum . Their chemical structures were elucidated by analyses of their ESI‐MS, NMR…