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Anti-inflammatory Dimeric Benzophenones from an Endophytic Pleosporales Species. | LitMetric

Anti-inflammatory Dimeric Benzophenones from an Endophytic Pleosporales Species.

J Nat Prod

The Laboratory of Effective Substances of Jiangxi Genuine Medicinal Materials, College of Life Sciences, Jiangxi Normal University, Nanchang, Jiangxi330022, People's Republic of China.

Published: January 2022

AI Article Synopsis

Article Abstract

Eight new polyketides, including three dimeric benzophenones, named dipleosporones A-C (-), three benzophenones (-), one xanthone (), and one phenylbenzoate (), along with seven known polyketides (-) were isolated from the fungus Pleosporales sp. YY-4. The structures of the new compounds were established on the basis of spectroscopic methods, including high-resolution electrospray ionization mass spectrometry and one- and two-dimensional nuclear magnetic resonance. This is the first report of a benzophenone dimer connection via a C bridge from natural sources. An anti-inflammatory assay indicated that the dimeric benzophenones (-) inhibited lipopolysaccharide-induced NO production in RAW 264.7 cells, with half-maximal inhibitory concentration (IC) values ranging from 8.8 to 18.1 μM, being more potent than the positive control, dexamethasone (IC = 22.2 μM).

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Source
http://dx.doi.org/10.1021/acs.jnatprod.1c00900DOI Listing

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