A5069962011- Analytical Chemistry and Chromatography
- Ionic liquids properties and applications
- Natural product bioactivities and synthesis
- Chemical and Physical Properties in Aqueous Solutions
- Crystallization and Solubility Studies
- Molecular spectroscopy and chirality
- Phytochemicals and Antioxidant Activities
- Tea Polyphenols and Effects
- Essential Oils and Antimicrobial Activity
- Innovative Microfluidic and Catalytic Techniques Innovation
- Fungal Biology and Applications
- Electrochemical Analysis and Applications
- Surfactants and Colloidal Systems
- Phytochemistry and Biological Activities
- Plant-based Medicinal Research
- Mesoporous Materials and Catalysis
- Covalent Organic Framework Applications
- Microbial Natural Products and Biosynthesis
- Carbon and Quantum Dots Applications
- Pharmacological Effects of Natural Compounds
- melanin and skin pigmentation
- Alkaloids: synthesis and pharmacology
- Chromatography in Natural Products
- Molecular Sensors and Ion Detection
- Radioactive element chemistry and processing
Shanghai University
2025
Guangxi University
2013-2024
Guangxi Medical University
2023
Guangxi Institute of Botany
2016
Beijing University of Chemical Technology
2014
Anhui Science and Technology University
2006
Six new ursane-type triterpenes with a phenylpropanoid unit and five known oleanane-type were isolated from the leaves of Camellia ptilosperma. The undescribed compounds identified by analysis 1D 2D NMR HRESIMS spectroscopic data as ptilospermanols A–F. cytotoxicity against six human cancer cell lines three mouse tumor was evaluated MTT assay.
The optical resolution of (R,S)-propranolol by the diastereomeric crystallization method was successfully performed using dehydroabietic acid (DHAA) as resolving agent in methanol. three important parameters: DHAA amount, solvent (methanol) and temperature salts were optimized employing response surface methodology (RSM). When maintaining a lower limit 95% for purity (S)-propranolol, optimal conditions DHAA/(R,S)-propranolol molar ratio 1.1, solvent/(R,S)-propranolol 16.2 mL.g(-1) , -5 °C....
12,14-Dinitrodehydroabietic acid (12,14-dinitroDHAA), a chiral obtained by the nitration of optical dehydroabietic (DHAA), was successfully employed as resolving agent. The resolution racemic bupivacaine ultrasonic-assisted diastereomeric crystallization in ethanol investigated. results indicated that ultrasonic-assist can well facilitate (R,S)-bupivacaine and higher enantiomeric excess (ee) yield for (S)-bupivacaine, while without ultrasound, ee value decreases increasing time. A...
Abstract The chiral media is crucial to the recognition and separation of enantiomers. In this study, we report preparation novel carbon nanoparticles (CCNPs) via surface passivation using glucose as source S ‐(−)‐α‐methylbenzylamine ligand. structures obtained CCNPs are characterized FT‐IR, Raman spectroscopy, DLS, XPS, XRD, TEM, zeta potential analysis. These could be employed adsorbent used for enantioselective adsorption ibuprofen results demonstrated that selectively adsorb R...
Stereoselective adsorption of the enantiomers shows potential in resolution a racemate. In this work, we synthesized novel magnetic surface molecularly imprinted polymers (MIPs) on γ-methacryloxypropyltrimethoxysilane (MPS)-modified Fe3O4@SiO2 particles to utilize chiral dehydroabietylamine (DHA) as functional monomer and R-mandelic acid template molecule (DHA-MIPs). We performed mandelic racemate (RS-MA) via as-prepared MIPs. The results revealed that MIPs have good affinity high capacity...
The solubility of berberine chloride in several imidazolium-based ionic liquids (ILs), that is, [Rmim]BF4, [Rmim]NO3, [Rmim]PF6, and [Rmim]NTf2 (R = butyl, hexyl, octyl), were measured using a laser monitoring observation method from 299.45 to 364.35 K at atmospheric pressure. selected increased as the temperature is dominantly dependent on type IL's anion structure with trend NTf2– ≫ NO3– > PF6– BF4–. ILs exhibited good dissolubility chloride, especially high temperature. correlated data...
Phytochemical investigation of the leaves Camellia ptilosperma S. Y. Liang et Q. D. Chen led to isolation ten undescribed compounds, including six new triterpenes (1–6) and four pheophorbide-related compounds (7–10). Meanwhile, cytotoxic activity against cancer cell lines was evaluated by MTT assay. Compound 2 showed potent cytotoxicity toward HepG2 cells with an IC50 value 2.57 μM. Compounds 4 5 exhibited MDA-MB231 cells, values 11.31 5.52 μM, respectively. Additionally, pheophorbides these...
Polyphenols, widely distributed in the genus
The solubility of aloe-emodin in five imidazolium-based ionic liquids (ILs), 1-decyl-3-methylimidazolium chloride ([C10mim]Cl), 1-hexyl-3-methylimidazolium hexafluorophosphate ([C6mim]PF6), tetrafluoroborate ([C6mim]BF4), 1-butyl-3-methylimidazolium ([C4mim]BF4), and bis(methylsulfonyl)amide ([C4mim]NTF2) was measured respectively from (295.55 to 363.55) K at atmospheric pressure using a laser monitoring observation method combined with high performance liquid chromatography (HPLC). A...
The PIL which were prepared from imidazole and epichlorohydrin used as catalysts for the conversion of cellobiose to 5-HMF. Effects catalyst anion, solvents, reaction temperature, recycling time investigated in detail. optimum conditions into 5-HMFcatalysed by [IMEP]BF4 temperature 180 oC, 0.5 g, 0.25 g DMSO(30 mL). In this condition yield 5-HMF can reach 39.2% 420min. good positive correlation between concentration glucose formation rate was given, is key step cellobiose. Moreover, has well...
This work dealt with the chiral separation of R- and S-valsartan mixture, where is an undesired coproduct formed in production S-valsartan. 1H NMR molecular simulation calculation indicated dehydroabietylamine (DHAA) has well recognition ability to valsartan enantiomers. DHAA successfully employs resolution via diastereomeric crystallization. The main parameters affecting enantio-separation process, such as solvent, molar ratio DHAA/valsartan, liquid-solid solvent/valsartan, reaction...
var. flavida, commonly known as "Jinhua Tea", has its flowers and leaves traditionally utilized tea functional food sources. However, there is limited knowledge about bioactive components their biological activities. This study isolated ten previously unidentified glycoside compounds from the of