Topic
Xanthone
About: Xanthone is a research topic. Over the lifetime, 1639 publications have been published within this topic receiving 25870 citations. The topic is also known as: 9-oxo-xanthene & Diphenyline ketone oxide.
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TL;DR: A prenylated biphenyl was isolated in a re-examination of the roots of Clusia paralycola and attributed the structure (5a) and the name clusiaparalycoline D for the similarity with other biphensyls isolated from the same source as discussed by the authors.
Abstract: A prenylated biphenyl was isolated in a re-examination of the roots of Clusia paralycola and attributed the structure (5a) and the name clusiaparalycoline D for the similarity with other biphenyls isolated from the same source. A second product, isomeric with the previously isolated paralycolin A, was assigned a 9,10-dihydrophenanthrene structure (6a) and named paralycolin B.
16 citations
16 citations
TL;DR: In this article, a new xanthone derivative, garcinexanthone F (1), which was found to possess an α,β-unsaturated γ-lactone moiety, and a new bisx-anthone, bigarcinenone B (2), with a terpene bridge providing the xanthonesanthone linkage, were isolated from the bark of Garcinia xanthochymus.
Abstract: A new xanthone derivative, garcinexanthone F (1), which was found to possess an α,β-unsaturated γ-lactone moiety, and a new bisxanthone, bigarcinenone B (2), with a terpene bridge providing the xanthonexanthone linkage, were isolated from the bark of Garcinia xanthochymus. Their structures were elucidated by spectroscopic methods, especially 2D-NMR techniques. The antioxidant assay in vitro showed that compounds 1 and 2 exhibited significant scavenging activities against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical with IC50 values of 22.32 and 20.14 μM, and against HO. radical with IC50 values of 1.16 and 2.85 μM, respectively.
16 citations
TL;DR: Non-toxicity of mangiferin conjugated AuNP on normal human breast cell line (MCF-10A) suggesting its future application as a drug delivery system and other related medicinal purposes.
16 citations
TL;DR: In this paper, the synthesis of 4-carboxy-2,6-dimethoxyphenyl 2.5-methyl-1,3-cyclohexanedione was achieved via a short and efficient route in three steps using ortho-lithiation as the key step.
16 citations