Results 51 to 60 of about 545 (181)

Bioproduction of Depsidones for Pharmaceutical Purposes

open access: yes, 2011
الأشنات هي تكافلات حميمة وطويلة الأجل محددة من الطحالب الضوئية أو البكتيريا الزرقاء والفطريات غيرية التغذية التي انضمت لتشكيل كيان بيولوجي جديد مختلف عن مكوناته الفردية (جالون وكارديش، 1995). ينتج الكلوروليكين بشكل أساسي مواد فينولية فريدة من نوعها، ديبيد، ديبسيدون وبعض ثنائي بنزوفيوران، مثل أحماض اليوزنيك (Huneck & Yoshimura، 1996)، التي لا تنتجها ...
Maria Estrella   +2 more
openaire   +2 more sources

Lobaric Acid Exhibits Anticancer Potential by Modulating the Wnt/β‐Catenin Signaling Pathway in MCF‐7 Cells

open access: yesPharmacology Research &Perspectives, Volume 13, Issue 4, August 2025.
Effect of lobaric acid on Wnt/β‐catenin pathway in breast cancer. ABSTRACT Lichen secondary metabolites with many remarkable biological activities are used in cancer treatments due to their low side effects and high anticancer potential. In particular, these metabolites constitute an interesting research area in cancer treatments due to their potential
Şeyda Nur Kalın   +6 more
wiley   +1 more source

α-Acetylhypoconstictic Acid, a New Depsidone from the Lichen Menegazzia dispora

open access: yes, 1985
The depsidone, α- acetylhypoconstictic acid (5-acetoxymethyl-1,4- dihydroxy-10-methoxy-8,11-dimethyl-7 H- isobenzofuro [4,5- b][1,4]benzodioxepin-3(1 H),7-dione) (6) has been synthesized and shown to co-occur with atranorin, chloroatranorin ...
JA Elix, KL Gaul, PW James
core   +1 more source

Lichen and Its Microbiome as an Untapped Source of Anti‐Biofilm Compounds

open access: yesChemistry &Biodiversity, Volume 22, Issue 4, April 17, 2025.
Lichens and their associated fungi give rise to the evaluation of several extracts and compounds against biofilms. ABSTRACT Lichen substances have been first described in the 1870s, and around 10 000 compounds have been isolated and characterized. Most of them have been evaluated for their activity on planktonic microorganisms (bacteria and fungi ...
Marion Millot   +4 more
wiley   +1 more source

Depsidone synthesis. V. The chemistry of psoromic acid: a reinvestigation

open access: yes, 1976
The structure of the lichen depsidone psoromic acid (1) (4-formyl-3-hydroxy-8-methoxy-1,9-dimethyl-ll-oxo-11H-dibenzo[b,e][l,4]dioxepin-6-carboxylic acid) is confirmed by a combination of spectroscopic, degradative and synthetic experiments.
S Huneck, MV Sargent
core   +1 more source

Conventional and innovative approaches to black fungi control for stone heritage preservation

open access: yesIUBMB Life, Volume 77, Issue 3, March 2025.
Abstract Black Meristematic Fungi (BMF) are characterized by a thick melanized cell wall and an isodiametric cellular expansion. BMF represent one of the most damaging groups of microorganisms causing the deterioration of outdoor exposed stone monuments mainly due to the formation of dark spots and patches leading to the darkening of their surface ...
Domenico Celi   +2 more
wiley   +1 more source

A new depsidone from the neotricone-rich chemotype of the lichenised fungus Usnea fulvoreagens

open access: yes, 2022
Individuals of Usnea fulvoreagens (Parmeliaceae, lichenised Ascomycota), a shrubby corticolous species that is widespread in Europe, East Asia and North America, produce medullary lichen acids in several distinct chemotypic patterns.
James K. Harper (1875562)   +2 more
core   +1 more source

Biosynthesis of Depsides, Depsidones, and Diphenyl Ethers from Fungi and Lichens

open access: yesAsian Journal of Organic Chemistry, Volume 14, Issue 2, February 2025.
Depsides are natural products derived from (poly)phenolic acid derivatives connected by ester bonds. Recent research has revealed crucial molecular mechanisms and distinctive enzymatic chemistry underlying the biosynthesis of depsides, as well as related natural products, such as depsidones and diphenyl ethers.
Qiaolin Ji, Yudai Matsuda
wiley   +1 more source

A new depsidone derivative from the leaves of Garcinia polyantha

open access: yes, 2017
Lannang AM, Sema DK, Tatsimo SJN, et al. A new depsidone derivative from the leaves of Garcinia polyantha. Natural product research. 2018;32(9):1033-1038.One new depsidone, polyanthadepsidone A (1), together with four known compounds were isolated from ...
Simplice J. N. Tatsimo   +15 more
core   +1 more source

Spiromastixones Inhibit Foam Cell Formation via Regulation of Cholesterol Efflux and Uptake in RAW264.7 Macrophages

open access: yesMarine Drugs, 2015
Bioassay-guided evaluation shows that a deep sea-derived fungus, Spiromastix sp. MCCC 3A00308, possesses lipid-lowering activity. Chromatographic separation of a culture broth resulted in the isolation of 15 known depsidone-based analogues, labeled ...
Chongming Wu   +8 more
doaj   +1 more source

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