Five new compounds called Pestalotis A-E (-), comprising three monoterpene-lactone compounds (-), one tetrahydrobenzofuran derivative (), and one sesquiterpene (), were isolated from the EtOAc extract of sp. The structures of the new compounds were elucidated by analysis of their NMR, HRMS, and ECD spectra, and the absolute configurations were established through the comparison of experimental and calculated ECD spectra. All compounds were tested for antitumor activity against SW-480, LoVo, HuH-7, and MCF-7. The results showed that compounds and exhibited potent antitumor activity against SW-480, LoVo, and HuH-7 cell lines. Furthermore, compound was assessed against HuH-7, and the results indicated that the rate of apoptosis was dose-dependent.
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http://dx.doi.org/10.3390/molecules26237229 | DOI Listing |
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 160 00 Prague, Czech Republic. Electronic address:
Model P-chirogenic phosphonates derived from isopinocampheol, offering an excellent experimental system for studying chirality on the phosphorus chiral center, were studied using a set of chiroptical methods including ECD, VCD and ROA. Thanks to their rigidity, limiting the number of possible conformers, we successfully correlated the experimental UV-vis/ECD, IR/VCD and Raman/ROA results with DFT calculations. This allowed us to confidently assign the absolute configuration of our models, and our assignment is consistent with X-ray diffraction (XRD) data.
View Article and Find Full Text PDFJ Adv Res
January 2025
State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macao 999078, China; Guangdong-Hong Kong-Macau Join Laboratory for Pharmacodynamic Constituents of TCM and New Drugs Research, University of Macau, Avenida da Universidade, Taipa, Macao 999078, China; Department of Pharmaceutical Sciences and Technology, Faculty of Health Sciences, University of Macau, Avenida de Universidade, Taipa, Macao 999078, China. Electronic address:
Introduction: Non-alcoholic fatty liver disease (NAFLD) acts as the primary contributor to non-alcoholic steatohepatitis, fibrosis, cirrhosis, and potentially hepatocellular carcinoma. The flowers of Chrysanthemum indicum, a traditional edible medicinal herb, have been widely used in China for more than 2000 years. However, the function of C.
View Article and Find Full Text PDFFitoterapia
January 2025
Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China; Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China. Electronic address:
Fifteen new aliphatic metabolites, 2-methylpyrimidin-4(3H)-ones (1,2), 2-methoxy-2-methyl-1,2-dihydro-3H-pyrrol-3-ones (4a/4b, 5a/5b), butyrolactones (6-9), and aliphatic metabolites (16-20) as well as known pyridin-2(1H)-one (3) and butyrolactone analogues (10-15) were obtained from the fermentation broth of Streptomyces antifungus isolated from the forest soil sample collected in Tengchong, China. Pyrimidin-4(3H)-one derivatives (1, 2) with an individual 2-methylpyrimidin-4(3H)-one skeleton is a kind of rarely reported compound and were firstly obtained from natural source. The structures of the new metabolites were elucidated by comprehensive spectroscopic analysis including data from experimental and calculated ECD spectra as well as Mosher's reagent derivative method.
View Article and Find Full Text PDFSci Rep
January 2025
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, Poznan, 61 614, Poland.
The embellishing of the macrocycle core with sulfur substituents of varied sterical requirements changes the structural dynamics of chiral, triangular polyimines. Despite their formal high symmetry, these compounds adopt diverse conformations, in which the macrocycle core represents a non-changeable unit. DFT calculations reveal that the mutual arrangement of sulfur-containing substituents is controlled mainly by sterical interactions.
View Article and Find Full Text PDFPhytochemistry
January 2025
School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China; Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan Province and Ministry of Education of China, Zhengzhou, 450046, PR China. Electronic address:
From the tuber of Alisma orientale (Sam.) Juzep. (Alismataceae), twenty-four compounds were isolated, including six (1, 2, 3, 10, 14, and 17) that were not yet characterized.
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