Results 41 to 50 of about 831 (142)

Depsidone Derivatives and a Cyclopeptide Produced by Marine Fungus Aspergillus unguis under Chemical Induction and by Its Plasma Induced Mutant

Molecules, 2018
A new depsidone derivative (1), aspergillusidone G, was isolated from a marine fungus Aspergillus unguis, together with eight known depsidones (2‒9) and a cyclic peptide (10): agonodepside A (2), nornidulin (3), nidulin (4), aspergillusidone F (5 ...
Wen-Cong Yang, Hai-Yan Bao, Ya-Yue Liu, Ying-Ying Nie, Jing-Ming Yang, Peng-Zhi Hong, Yi Zhang   +6 more
doaj   +1 more source

Three New Lichen Depsidones

, 1987
The depsidones α- acetylconstictic acid (5-acetoxymethyl-1,4-dihydroxy-10-methoxy-8-methyl-3,7-dioxo-1,3-dihydro-7 H- isobenzofuro [4,5- b][l,4] benzodioxepin-ll-carbaldehyde ) (6), substictic acid (1,4-dihydroxy-10-methoxy-8-methy1-3,7-dioxo- 1,3 ...
JA Elix, KL Gaul, PW James, OW Purvis
core   +1 more source

Phylogenetic Studies and Metabolite Analysis of Sticta Species from Colombia and Chile by Ultra-High Performance Liquid Chromatography-High Resolution-Q-Orbitrap-Mass Spectrometry

Metabolites, 2022
Eleven species of lichens of the genus Sticta, ten of which were collected in Colombia (S. pseudosylvatica S. luteocyphellata S. cf. andina S. cf. hypoglabra, S. cordillerana, S. cf. gyalocarpa S. leucoblepharis, S. parahumboldtii S.
Laura Albornoz, Alfredo Torres-Benítez, Miguel Moreno-Palacios, Mario J. Simirgiotis, Saúl A. Montoya-Serrano, Beatriz Sepulveda, Elena Stashenko, Olimpo García-Beltrán, Carlos Areche   +8 more
doaj   +1 more source

Methyl 4‐O‐Demethylbarbatate Destabilises HIF‐1α and Enhances Temozolomide Sensitivity in Glioma Cells

Cell Proliferation, EarlyView.
The lichen‐derived metabolite methyl 4‐O‐demethylbarbatate (Me‐4‐O‐DBA) suppresses glioma stemness, motility, and metabolic plasticity through inhibition of HIF‐1α signaling and synergistically enhances temozolomide activity, highlighting a potential strategy to target stemness‐driven therapeutic resistance in glioma.
Rui Zhou, Mücahit Varlı, Rundong Liu, Jieun Yu, Hyung‐Ho Ha, Jae‐Seoun Hur, Sang Kyum Kim, Hahyun Park, Hangun Kim   +8 more
wiley   +1 more source

Effects of Fumarprotocetraric Acid, a Depsidone from the Lichen Cladonia verticillaris, on Tyrosinase Activity

Orbital: The Electronic Journal of Chemistry, 2017
Lichens are widely distributed around the world. Their phenolic compounds, consisting mainly of depsides and depsidones, have been extensively studied for important biological activities.
Luiz Fabrício Gardini Brandão, Noemia Pereira da Silva Santos, Eugênia Cristina Gonçalves Pereira, Nicácio Henrique da Silva, Maria de Fatima Cepa Matos, Danielle Bogo, Neli Kika Honda   +6 more
doaj   +3 more sources

The Role of Secondary Metabolites and Bark Chemistry in Shaping Diversity and Abundance of Epiphytic Lichens

Frontiers in Forests and Global Change, 2022
Diversity of secondary lichen metabolites was studied in epiphytic lichens on six phorophytes—spruce, pine, birch, alder, aspen and poplar in the Middle Urals of Russia. Atranorin, usnic, fumarprotocetraric acid, zeorin, and gyrophoric acid were found in
Alexander Paukov, Anzhelika Teptina, Alexander Ermoshin, Ekaterina Kruglova, Lada Shabardina   +4 more
doaj   +1 more source

Eugenol‐Derived Piperazine Mannich Bases as Selective Inhibitors of Mayaro Virus: In Vitro Antiviral Evaluation and Mechanistic Insights

Journal of Medical Virology, Volume 98, Issue 9, September 2026.
ABSTRACT Arboviruses represent an ongoing global health challenge, particularly in tropical regions where diseases caused by Chikungunya virus (CHIKV) and Mayaro virus (MAYV) continue to emerge. Given the absence of licensed antiviral therapies, the identification of effective small molecules remains critical.
Adriana Cotta Cardoso Reis, Amália Luíza de Sousa da Silva, Camila Portruneli, Augusto Vieira Pontes Silva, Saulo Fehelberg Pinto Braga, Igor Rodrigues Lapa, Thiago Belarmino de Souza, Lucas Lopardi Franco, Diogo Teixeira Carvalho, Geraldo Célio Brandão   +9 more
wiley   +1 more source

The ultraviolet and infrared spectra of some lichen depsides and depsidones

, 1966
The ultraviolet and infrared spectral data for a number of lichen depsides, depsidones and their fission products have been recorded. The U.V. spectra of the orcinol depsides, orcinol depsidones and β-orcinol depsidones are characteristic while those of ...
Sarma, K. G., Seshadri, T. R., Rao, P. S.   +2 more
core   +1 more source

Fungal Depsidones Stimulate AKT-Dependent Glucose Uptake in 3T3-L1 Adipocytes. [PDF]

J Nat Prod
Enhanced glucose uptake in insulin-sensitive tissues is one of the therapeutic strategies to ameliorate hyperglycemia and maintain glucose homeostasis in type 2 diabetes.
Chantarasakha K, Yangchum A, Isaka M, Tepaamorndech S.   +3 more
europepmc   +2 more sources

Secalonic acid A from Pseudoparmelia sphaerospora (Nyl.) Hale and P. hypomilta (Fée) Hale (Parmeliaceae) [PDF]

, 1995
Secalonic acid A, a yellow pigment from fungal metabolism, was isolated from the lichens Pseudoparmelia sphaerospora and P. hypomilta. From P. sphaerospora was also isolated the depsidone hypostictic acid.
Devincenzi, Izilda A. A., Filho, Lauro Xavier, Honda, Neli K.   +2 more
core