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Preparative isolation and purification of amides from the fruits of Piper longum L. by upright counter-current chromatography and reversed-phase liquid chromatography.
A versatile counter-current chromatography (CCC) with upright type-J multilayer coil planet centrifuge, named upright CCC, was applied to the isolation and purification of amides from Piper longum
Geranyl flavonoids from the leaves of Artocarpus altilis.
Five geranyl dihydrochalcones, 1, 2, 3, 4, and 9, along with four known geranyl flavonoids, were isolated from the leaves of Artocarpus altilis and exhibited moderate cytotoxicity against SPC-A-1, SW-480, and SMMC-7721 human cancer cells.
Ionic liquid-based microwave-assisted extraction of phenolic alkaloids from the medicinal plant Nelumbo nucifera Gaertn.
An ionic liquid-based microwave-assisted extraction (ILMAE) approach has been successfully applied to the effective extraction of the phenolic alkaloids present in samples of the medicinal plant
Red Wine Polyphenols for Cancer Prevention
This review focuses on recent progress in studies on cancer chemopreventive activities of redwine polyphenol extracts and fractions as well as other red wine polyphenols, like procyanidin B5 analogues and myricetin.
Chunganenol: an unusual antioxidative resveratrol hexamer from Vitis chunganensis.
Chunganenol (1), an unusual resveratrol hexamer, has been isolated from Vitis chunganensis and featured a novel interunit lingkage where two stilbene units are connected by a methylene bridge.
Application of ionic liquids based microwave-assisted extraction of three alkaloids N-nornuciferine, O-nornuciferine, and nuciferine from lotus leaf.
Compared with the regular MAE and conventional heat-reflux extraction (HRE), the proposed approach exhibited higher efficiency and shorter extraction time, which indicated ILMAE was an efficient, rapid and simple sample preparation technique.
Preparative counter-current chromatography isolation of liensinine and its analogues from embryo of the seed of Nelumbo nucifera GAERTN. using upright coil planet centrifuge with four multilayer
Preparative counter-current chromatography (CCC) isolation of liensinine and its analogues, isoliensinine and neferine from embryo of the seed of Nelumbo nucifera GAERTN. has been successfully
Specific cooperative effect for the enantiomeric separation of amino acids using aqueous two-phase systems with task-specific ionic liquids.
Aqueous two-phase systems (ATPS) based on hydrophilic ionic liquid (IL) and inorganic salt solution were designed and prepared for the enantiomeric separation of racemic amino acids and IL-1 was validated with other general amino acids by the same procedures based on ATPS.
Mechanism study of SO2 elimination from sulfonamides by negative electrospray ionization mass spectrometry.
Collision-induced dissociation (CID) of deprotonated N-alkylbenzenesulfonamides containing the -CHCHNHSO2- structure yielded a [M-H-66](-) product ion that could help to distinguish the side-chain isomers.
Bioassay-guided isolation and EPR-assisted antioxidant evaluation of two valuable compounds from mango peels
Abstract Bioassay-guided HPLC/ESI-MS2 analysis of the ethyl acetate extract of mango peels (MPE) led to the isolation of two major valuable compounds, ethyl gallate (2) and penta-O-galloyl-glucoside