FLAVONOIDS FROM FLOWERS OF AMESIODENDRON CHINENSE (SAPINDACEAE)

Ho Van Ban; Trinh Thi Thanh Van; Vu Van Chien; Nguyen Thi Hue; Pham Thi Hang; Pham Van Cuong; Nguyen Le Tuan; Nguyen Quoc Vuong

doi:10.15625/2525-2518/58/6/15127

FLAVONOIDS FROM FLOWERS OF AMESIODENDRON CHINENSE (SAPINDACEAE)

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/58/6/15127 ◽

2020 ◽

Vol 58 (6) ◽

pp. 676

Author(s):

Ho Van Ban ◽

Trinh Thi Thanh Van ◽

Vu Van Chien ◽

Nguyen Thi Hue ◽

Pham Thi Hang ◽

...

Keyword(s):

Spectral Data ◽

Physicochemical Parameters ◽

Mass Spectral Data ◽

Mass Spectral ◽

Chemical Structures

From the flowers of Amensiodendron Chinese (Merr.) Hu, six known flavonoids, (-)-catechin (1), (-)-epi-catechin (2), chrysoeriol (3), quercetin-3-O-β-D-glucopyranoside (4), astragalin (5) and kaempferide-3-O-β-D-glucopyranoside (6) were isolated. Their chemical structures were elucidated by analysis of the physicochemical parameters, the NMR and mass spectral data, and comparison with those reported in the literatures.

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Chemical Constituents of Phoebe poilanei and Their Cytotoxic Activity

Natural Product Communications ◽

10.1177/1934578x19850969 ◽

2019 ◽

Vol 14 (5) ◽

pp. 1934578X1985096

Author(s):

Nguyen Thi Viet Thanh ◽

Tran Thi Minh ◽

Dinh Thi Thu Hien ◽

Ho Duc Cuong ◽

Yohan Seo ◽

...

Keyword(s):

Nuclear Magnetic Resonance ◽

High Resolution ◽

Cytotoxic Activity ◽

Spectral Data ◽

Chemical Constituents ◽

Flavonol Glycosides ◽

Ionization Mass ◽

Mass Spectral Data ◽

Mass Spectral ◽

Chemical Structures

Two new flavonol glycosides, rhamnocitrin 3- O-α-L-rhamnopyranosyl-(1→6)-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside (1) and quercetin 3- O-6- Z- p-coumaroyl-β-D-glucopyranosyl-(1→2)-α-L-rhamnopyranoside (2), along with 3 flavonol glycosides, isoquercitrin (3), rutin (4), and quercetin 3- O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranoside (5), and two known sesquiterpenes, alismol (6) and spathulenol (7), were isolated from the leaves of Phoebe poilanei Kosterm. Their chemical structures were elucidated by analyses of their high-resolution electrospray ionization mass spectral data and nuclear magnetic resonance spectral data and comparison with those reported in the literature. Two sesquiterpenes 6 and 7 were found to exhibit moderate cytotoxic activity with IC50 values ranging from 21.6 to 29.8 µM.

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TERPENOIDS FROM THE LEAVES AND STEMS OF DYSOXYLUM TPONGENSE

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/57/2/12973 ◽

2019 ◽

Vol 57 (2) ◽

pp. 139

Author(s):

Pham Ngoc Khanh ◽

Bui Huu Tai ◽

Tran Thu Huong ◽

To Dao Cuong ◽

Young Ho Kim ◽

...

Keyword(s):

Spectral Data ◽

Chemical Constituents ◽

Mass Spectral Data ◽

Mass Spectral ◽

Chemical Structures

Study on chemical constituents from the leaves and stems of Dysoxylum tpongense Pierre resulted in the isolation of six known compounds (1–6). The chemical structures of isolated compounds were identified as cabraleahydroxylactone (1), cabraleahydroxylactone-3-acetate (2), (+) spathulenol (3), b-sitosterol (4), stigmasterol (5), and stigmast-4-en-3-one (6) by comparison of the physicochemical, interpretation of NMR and mass spectral data with that reported in the literature.

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Green Synthetic Protocol for (E)-1-Aryl-3-(2-morpholinoquinolin- 3-yl)prop-2-en-1-ones and Their Antimicrobial Activity

Asian Journal of Chemistry ◽

10.14233/ajchem.2019.21968 ◽

2019 ◽

Vol 31 (9) ◽

pp. 1895-1898

Author(s):

Relangi Siva Subrahmanyam ◽

Venkateswara Rao Anna

Keyword(s):

Antimicrobial Activity ◽

Spectral Data ◽

1H Nmr ◽

13C Nmr ◽

Mass Spectral Data ◽

In Vitro Antimicrobial Activity ◽

Mass Spectral ◽

Fungal Organisms

We report here an easy, efficient and green synthetic protocol for the (E)-1-aryl-3-(2-morpholinoquinolin-3-yl)prop-2-en-1-ones by the Claisen-Schmidt condensation of 2-morpholinoquinoline-3-carbaldehyde and different substituted acetophenones by using 1-butyl-3-methylimidazolium tetrafluoroborate (Bmim)BF4. The compounds were characterized by using 1H NMR, 13C NMR and mass spectral data and screened there in vitro antimicrobial activity against different bacterial and fungal organisms.

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N-(2-(1H-Indol-3-yl)ethyl)-2-(6-methoxynaphthalen-2-yl)propanamide

Molbank ◽

10.3390/m1187 ◽

2021 ◽

Vol 2021 (1) ◽

pp. M1187

Author(s):

Stanimir Manolov ◽

Iliyan Ivanov ◽

Dimitar Bojilov

Keyword(s):

Spectral Data ◽

13C Nmr ◽

Title Compound ◽

High Yield ◽

Mass Spectral Data ◽

Mass Spectral

The title compound was obtained in high yield in the reaction between tryptamine and naproxen. The newly synthesized naproxen derivative was fully analyzed and characterized via 1H, 13C-NMR, UV, IR, and mass spectral data.

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(1R,4S,5S)-5-((3-Hydroxypropyl)amino)-4-((1-Methyl-1H-tetrazol-5-yl)thio)Cyclopent-2-en-1-ol

Molbank ◽

10.3390/m1199 ◽

2021 ◽

Vol 2021 (2) ◽

pp. M1199

Author(s):

Milene A. G. Fortunato ◽

Filipa Siopa ◽

Carlos A. M. Afonso

Keyword(s):

Spectral Data ◽

13C Nmr ◽

Ring Opening ◽

Environmentally Friendly ◽

Mass Spectral Data ◽

Mass Spectral ◽

Excellent Yield ◽

Ring Opening Reaction ◽

Nucleophilic Ring Opening

Using environmentally friendly conditions, the nucleophilic ring-opening reaction of 6-azabicyclo[3.1.0]hex-3-en-2-ol with 1-methyl-1H-tetrazole-5-thiol provided a novel thiol-incorporated aminocyclopentitol, (1R,4S,5S)-5-((3-hydroxypropyl)amino)-4-((1-methyl-1H-tetrazol-5-yl)thio)cyclopent-2-en-1-ol, in excellent yield (95%). The newly synthesized compound was analyzed and characterized via 1H, 13C-NMR, HSQC, and mass spectral data.

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