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Multiple chromatographic methods
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In this paper, the isolation and structural elucidation of three compounds: albifolione (1), zeorin (2), and atranorin (3) from the lichen P. cristiferum are reported. Their structures were elucidated from spectroscopic data and comparison with literature data.
6p
vinebula
02-06-2023
6
2
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Adirectinjection, multi residue analytical method separated in two chromatographic runs was developed utilizing scheduled analysis to simultaneously quantify 154 compounds, 84 precursors and 70 transformation products (TPs)/metabolites.
10p
viginny
23-12-2022
9
3
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Screening of physicochemical properties should be considered one of the essential steps in the drug discovery pipeline. Among the available methods, biomimetic chromatography with an immobilized artificial membrane is a powerful tool for simulating interactions between a molecule and a biological membrane.
8p
viginny
23-12-2022
6
2
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The leaves of Combretum quadrangulare Kurz. collected in Long An Province were chemically investigated using multiple chromatographic methods. Four compounds, 5-hydroxy3,7,4′-trimethoxyflavone (1), ayanin (2), kamatakenin (3), and luteolin (4) were isolated and elucidated. Their chemical structures were elucidated by comparing their spectroscopic data with those in previous reports.
6p
viellenkullman
16-05-2022
17
1
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Chemical data of Bipolaris maydis are little. This fungus was derived from Kandelia candel. Three known compounds, cis-cyclo(L-Val-L-Phe) (1), melithasterol B (2), and chrysophanol (3) were isolated from the cultures of Bipolaris maydis using multiple chromatographic methods.
6p
viericschmid
12-01-2022
21
1
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Phytochemical data of Sterculia foetida Linn. are scarce. The leaves of Sterculia foetida Linn. collected in Binh Thuan Province were chemically investigated using multiple chromatographic methods. Three compounds, hesperidin (1), kaempferol (2) and ursolic acid (3) were isolated and elucidated. Their chemical structures were elucidated by comparing their spectroscopic data with those in previous studies. These compounds were found for the first time from the leaves of Sterculia foetida Linn. Compounds 1 was obtained for the first time in Sterculia genus.
6p
angicungduoc11
18-04-2021
18
1
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Euphorbia tirucalli has not been chemically studied much in Vietnam. This research described the isolation and elucidation of compounds isolated from the plant collected in Binh Thuan. Multiple chromatographic methods were applied, including normal phase silica gel column chromatography and thin-layer chromatography. Seven compounds were isolated and their chemical structures were elucidated by spectroscopic analysis as well as comparing their data with the ones in the literature
7p
elandorr
03-12-2019
7
0
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This paper discusses the usefulness of artificial neural networks (ANNs) for response surface modeling in HPLC method development. In this study, the combined effect of pH and mobile phase composition on the reversed-phase liquid chromatographic behavior of a mixture of salbutamol (SAL) and guaiphenesin (GUA), combination I, and a mixture of ascorbic acid (ASC), paracetamol (PAR) and guaiphenesin (GUA), combination II, was investigated. The results were compared with those produced using multiple regression (REG) analysis.
11p
kethamoi1
17-11-2019
14
0
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