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Keywords = crassinervic acid

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10 pages, 1264 KiB  
Article
Dentifragilones A–B and Other Benzoic Acid Derivatives from the European Basidiomycete Dentipellis fragilis
by Winnie Chemutai Sum, Sherif S. Ebada, Mahmoud A. A. Ibrahim, Harald Kellner and Marc Stadler
Molecules 2024, 29(12), 2859; https://doi.org/10.3390/molecules29122859 - 16 Jun 2024
Cited by 1 | Viewed by 1541
Abstract
A chemical and biological exploration of the European polypore Dentipellis fragilis afforded two previously undescribed natural products (1 and 2), together with three known derivatives (35). Chemical structures of the isolated compounds were confirmed through 1D/2D NMR spectroscopic [...] Read more.
A chemical and biological exploration of the European polypore Dentipellis fragilis afforded two previously undescribed natural products (1 and 2), together with three known derivatives (35). Chemical structures of the isolated compounds were confirmed through 1D/2D NMR spectroscopic analyses, mass spectrometry, and by comparison with the reported literature. The relative and absolute configurations of 1 were determined according to the ROESY spectrum and time-dependent density functional theory electronic circular dichroism (TDDFT-ECD), respectively. Furthermore, the absolute configuration of dentipellinol (3) was revisited and revealed to be of (R) configuration. All the isolated compounds were assessed for their cytotoxic and antimicrobial activities, with some being revealed to have weak to moderate antimicrobial activity, particularly against Gram-positive bacteria. Full article
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