Results 151 to 160 of about 2,517,497 (197)
Decomposition of Usnic Acid. I
YAKUGAKU ZASSHI, 1951 Takahashi, Kotaro, Shibata, Shoji
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Nanostructured Poly-l-lactide and Polyglycerol Adipate Carriers for the Encapsulation of Usnic Acid: A Promising Approach for Hepatoprotection. [PDF]
Polymers (Basel)Brugnoli B +10 more
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Enhancement of the Antitumor and Antimetastatic Effect of Topotecan and Normalization of Blood Counts in Mice with Lewis Carcinoma by Tdp1 Inhibitors-New Usnic Acid Derivatives. [PDF]
Int J Mol SciKornienko TE +9 more
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Phytochemistry, 2002
Since its first isolation in 1844, usnic acid [2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl-1,3(2H,9bH)-dibenzo-furandione] has become the most extensively studied lichen metabolite and one of the few that is commercially available. Usnic acid is uniquely found in lichens, and is especially abundant in genera such as Alectoria, Cladonia, Usnea, Lecanora ...
Kristin Ingolfsdottir
exaly +3 more sources
Since its first isolation in 1844, usnic acid [2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl-1,3(2H,9bH)-dibenzo-furandione] has become the most extensively studied lichen metabolite and one of the few that is commercially available. Usnic acid is uniquely found in lichens, and is especially abundant in genera such as Alectoria, Cladonia, Usnea, Lecanora ...
Kristin Ingolfsdottir
exaly +3 more sources
Antimitotic effects of usnic acid on different biological systems
Cellular and Molecular Life Sciences, 1997 Usnic acid is a biosynthesis product characteristic of several epiphytic lichens such as Evernia, Cladonia and Parmelia. Usnic acid has several interesting biological properties. It is an antibiotic and it also seems to exert an antimitotic action.
Maura Cardarelli, L Campanella, G Serino
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Genotoxicity of (+)- and (−)-usnic acid in mice
Mutation Research - Genetic Toxicology and Environmental Mutagenesis, 2019Usnic acid, which is the most widespread and well-studied secondary lichen compound, has antibacterial and cytotoxic effects. Usnic acid is present in lichens as the (+)- and (-)-enantiomers, which have different biological activities. We used a DNA-comet assay to determine the genotoxic effect of (+)- and (-)-usnic acid in the liver and kidney cells ...
Ilya Andreevich Prokopiev +2 more
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Effects of (+)-usnic acid and (+)-usnic acid-liposome on Toxoplasma gondii
Experimental Parasitology, 2016Toxoplasma gondii pathogen is a threat to human health that results in economic burden. Unfortunately, there are very few high-efficiency and low-toxicity drugs for toxoplasmosis in the clinic. (+)-Usnic acid derived from lichen species has been reported to have anti-inflammatory, antibacterial, anti-parasitology, and even anti-cancer activities ...
Kaiwei, Si +6 more
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The chemoenzymatic synthesis of usnic acid
Bioorganic and Medicinal Chemistry Letters, 2009Usnic acid, a highly functionalized dibenzofuran, is a polyketide secondary metabolite produced by several species of lichens. Synthesis of usnic acid from commercially available starting material was accomplished in two steps. The synthesis involves the methylation of phloracetophenone followed by oxidation with horseradish peroxidase.
John L Sorensen
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Acaricidal activity of usnic acid and sodium usnic acid against Psoroptes cuniculi in vitro
Parasitology Research, 2014Usnic acid, a major active compound in lichens, was first isolated in 1884. Since then, usnic acid and its sodium salt (sodium usnic acid) have been used in medicine, perfumery, cosmetics, and other industries due to its extensive biological activities. However, its acaricidal activity has not been studied. In this paper, we investigated the acaricidal
Xiaofei Shang, Hu Pan, Xiaolou Miao
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