Two novel polyketones, along with four known compounds, were isolated from the leaves and twigs of . Their structures were determined to be clerodendruketone A (), clerodendruketone B (), ecdysanols E (), ecdysanols D (), 5,5'-dimethoxy-7-oxolariciresinol (), and (-)-(7',8,8')-4,4'-dihydroxy-3,3',5,5'-tetramethoxy-7',9-epoxy-lignan-9'-ol-7-one () through the methods of NMR, HRESIMS and ECD data analyses. The antioxidant effects against free radical were tested by DPPH assay. The antibacterial activity against and were tested by turbidimetry assay. The results demonstrated that compounds and had significative antibacterial activity, and compound had moderate antioxidant activity.
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http://dx.doi.org/10.1080/10286020.2021.1914598 | DOI Listing |
Int J Biol Macromol
December 2024
College of Food Science and Engineering, Shanxi Agricultural University, Taigu 030801, China. Electronic address:
The present study aimed to investigate the impact of Sparassis latifolia polysaccharides (SLPs) on hepatic immune function in cyclophosphamide (CTX)-induced immunocompromised mice. Our findings demonstrated that SLPs effectively suppressed the production of alanine aminotransferase (ALT), aspartate aminotransferase (AST), inflammatory factors, and acute phase proteins, while improving the hepatic oxidative stress state. Additionally, SLPs exerted inhibitory effects on inflammatory cell infiltration within hepatic tissue.
View Article and Find Full Text PDFMacromolecules
July 2024
Departamento de Química Inorgánica, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain.
A new approach to ring-opening polymerization (ROP) based on C(sp)-C(sp) bond cleavage is reported. This process is based on the ability of Pd to promote both the β-carbon elimination of a bifunctional cyclobutanol precursor and the C-C coupling process with the resulting Pd-alkyl intermediate. Consequently, novel polyketone materials are obtained.
View Article and Find Full Text PDFFront Plant Sci
July 2024
College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China.
Naturally synthesized secondary metabolites in plants are considered an important source of drugs, food additives, etc. Among them, research on natural plant medicinal components and their synthesis mechanisms has always been of high concern. We identified a novel medicinal floral crop, L.
View Article and Find Full Text PDFACS Appl Mater Interfaces
July 2024
Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan.
Oily wastewater threatens the environment and the human health. Membrane technology offers a simple and efficient alternative to separating oil and water. However, complex membrane modifications are usually employed to optimize the separation performance.
View Article and Find Full Text PDFBiochem Genet
June 2024
Laboratory of Microbiology, Institute of Biology, Hebei Academy of Sciences, 15, Shijiazhuang, 050081, Hebei, People's Republic of China.
Endophytic fungi associated with plants may contain undiscovered bioactive compounds. Under standard laboratory conditions, most undiscovered compounds are inactive, whereas their production could be stimulated under different cultivation conditions. In this study, six endophytic fungi were isolated from the bark of Koelreuteria paniculata in Quancheng Park, Jinan City, Shandong Province, one of which was identified as a new subspecies of Aureobasidium pullulans, named A.
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