Objective: To study the chemical constituents from the methanolic extract from the leaf of Liquidambar formosana Hance.
Method: The compounds were separated with the column chromatographic and Prep HPLC, and their structures were identified by chemical and spectroscopic methods.
Results: Three compounds were isolated from the methanolic extract. They were identified as: beta-sitosterol (I), alpha-amyrin (II) and oleanonic acid (III).
Conclusion: All of them were isolated from this plant for the first time.
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Biotechnol Lett
January 2025
Extremophile and Productive Microorganisms Research Center, Kerman University of Medical Sciences, Kerman, Iran.
Selenium is an essential element with various industrial and medical applications, hence the current considerable attention towards the genesis and utilization of SeNPs. SeNPs and other nanoparticles could be achieved via physical and chemical methods, but these methods would not only require expensive equipment and specific reagents but are also not always environment friendly. Biogenesis of SeNPs could therefore be considered as a less troublesome alternative, which opens an excellent window to the selenium and nanoparticles' world.
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January 2025
College of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China. Electronic address:
This study aimed to investigate the potential protective properties of a traditional Chinese medicine (TCM) herbal product, Siraitia grosvenorii granules (SGG) against PM2.5-induced lung injury, as well as their active constituents and underlying mechanisms. The chemical composition of SGG, such as wogonin (MOL000173), luteolin (MOL000006), nobiletin (MOL005828), naringenin (MOL004328), acacetin (MOL001689), were identified via ultra-high-performance liquid chromatography-Q Exactive (UHPLC-QE) Orbitrap/MS.
View Article and Find Full Text PDFChem Biodivers
January 2025
Hainan Pharmaceutical Research and Development Science Park, Hainan Academy of Medical Sciences, Hainan Medical University, Haikou, China.
One new monomeric citrinin analog (1) and 42 known compounds (2-43) were isolated from Penicillium citrinum W22. The structure of 1 was determined by detailed analysis of the 1D and 2D nuclear magnetic resonance (NMR), HRESIMS, and time-dependent density functional theory (TD-DFT)-based electronic circular dichroism (ECD) calculation. Penicitrinol A (2) and methyl 2-(2-acetyl-3,5-dihydroxy-4,6-dimethylphenyl) acetate (11) significantly inhibited renin-angiotensin system-selective lethal 3 (RSL3)-induced ferroptosis with half maximal effective concentration (EC) values of 1.
View Article and Find Full Text PDFMicrob Cell Fact
January 2025
State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
Background: The composition of anaerobically digested sludge is inherently complex, enriched with structurally complex organic compounds and nitrogenous constituents, which are refractory to biodegradation. These characteristics limit the subsequent rational utilization of resources from anaerobically digested sludge. White-rot fungi (WRF) have garnered significant research interest due to their exceptional capacity to degrade complex and recalcitrant organic pollutants.
View Article and Find Full Text PDFNano Lett
January 2025
Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai-400005, India.
Predictive approaches and rules to connect and combine molecular circuit components are required to realize the potential of molecular electronics and develop miniaturized integrated circuits. To this end, we have recently demonstrated a bis(terpyridine)-based molecular breadboard with four conductance states formed by the superposition of five 2-5 ring circuits. Here, we develop a generic analytical/statistical model to describe break-junction data and use it to extract the conductance of the five embedded circuits in the bis-terpyridine-based molecular breadboard junction.
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