Results 121 to 130 of about 1,299 (187)
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Antioxidant activity of depsides and depsidones
Phytochemistry, 1994The antioxidant activity of lichenic metabolites, depsides and depsidones, was assessed by their effects as inhibitors of rat brain homogenate auto-oxidation and beta-carotene oxidation. The results obtained in both systems indicate that lichenic metabolites afford a moderate protection in the microM concentration range. The largest effect was measured
W Quilhot
exaly +3 more sources
Chemistry and Biodiversity, 2023
Chemical study on marine sponge‐derivated fungus Aspergillus nidulans resulted in the isolation of seven depsidones (1–7) and two macrocyclic peptides (8 and 9).
Nguyen Thi Hoang Anh +9 more
semanticscholar +1 more source
Chemical study on marine sponge‐derivated fungus Aspergillus nidulans resulted in the isolation of seven depsidones (1–7) and two macrocyclic peptides (8 and 9).
Nguyen Thi Hoang Anh +9 more
semanticscholar +1 more source
Cytotoxic depsidones and xanthones from Garcinia esculenta Y. H. Li.
Fitoterapia, 2023Six new compounds, including two depsidones garciculendepsidones A and B (1 and 2), one prenylated xanthone garciculenxanthone (3) and three dimeric xanthones bigarciculenxanthones A-C (4-6), were isolated from the twigs and leaves of Garcinia esculenta ...
Fengzhi Shi +5 more
semanticscholar +1 more source
Depsidone synthesis. Part 19. Some β-orcinol depsidones
J. Chem. Soc., Perkin Trans. 1, 1981The synthesis of the lichen depsidones 3,8-dihydroxy-1,4,6,9-tetramethyl-11-oxo-11H-dibenzo[b,e][1,4]-dioxepin-7-carboxylic acid (hypoprotocetraric acid)(4), 8-hydroxy-3-methoxy-1,4,6,9-tetramethyl-11-oxo-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylic acid (O-methylhyprprotocetraric acid)(5), 4-formyl-3,8-dihydroxy-1,6,9-trimethyl-11-oxo-11H-dibenzo[b,e][1,
Tony Sala, Melvyn V. Sargent
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Two New α‐Glucosidase Inhibitory Depsidones from the Lichen Parmotrema cristiferum (Taylor) Hale
Chemistry and Biodiversity, 2023A bioactivity‐guided investigation of the lichen Parmotrema cristiferum (Taylor) Hale (Parmeliaceae) led to the isolation of two new depsidones, cristifones A and B (1 and 2).
Thanh-Hung Do +6 more
semanticscholar +1 more source
Depsidone synthesis. Part 11. Synthesis of some fungal depsidones related to nidulin
Journal of the Chemical Society, Perkin Transactions 1, 1978The synthesis of 3-hydroxy-8-methoxy-1,9-dimethyl-6-(s-butyl)dibenzo[b,e][1,4]dioxepin-11-one (tridechlorodihydronidulin)(34), a derivative of the fungal depsidone nidulin (1), and of 3,8-dihydroxy-1,9-dimethyl-6-(s-butyl)dibenzo[b,e][1,4]dioxepin-11-one (tridechlorodihydro-O-nornidulin)(39), a derivative of the fungal depsidone tridechloro-O ...
Peter Djura, Melvyn V. Sargent
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Depsidone synthesis. XII. Some exploratory synthetic routes to highly functionalized depsidones
Australian Journal of Chemistry, 1978Attempts to synthesize the depsidones virensic acid (1), physciosporin (2), and pannarin (3) by routes based on the Ullmann ether condensation and the Hems reaction are described. Selective functionalization of highly substituted p-xylenes by photobromination is reported.
T Sala, MV Sargent
openaire +1 more source
Depsidones from Anomalographis madeirensis
Biochemical Systematics and Ecology, 19990 ...
Jaime Bermejo, Antonio G Gonzalez
exaly +3 more sources
Natural Product Research, 2021
Four new depsidones, mollicellins V-Y (1-4), together with eight known depsidones (5-12) were isolated from the endophytic fungus, Chaetomium brasiliense, detached from stems of Thai rice.
Trinop Promgool +8 more
semanticscholar +1 more source
Four new depsidones, mollicellins V-Y (1-4), together with eight known depsidones (5-12) were isolated from the endophytic fungus, Chaetomium brasiliense, detached from stems of Thai rice.
Trinop Promgool +8 more
semanticscholar +1 more source