Results 111 to 120 of about 346 (137)

Electrochemical and spectroscopic study of l-dopa interaction with avarol

Reaction Kinetics, Mechanisms and Catalysis, 2019
The electrochemistry of catecholamine neurotransmitters and their precursor l-dopa has been widely studied due to their relevance as biologically important compounds. The detection of these compounds from aqueous solution is hindered by the coexistence of quinone or hydroquinone. However, it was suggested that quinones adsorbed on the electrode surface
Đura Nakarada, Boris Pejin, Dušan Dimić, Ana Ivanović-Šašić, Zorica Mojović, Miloš Mojović   +5 more
openaire   +2 more sources

A New Bioactive Derivative of Avarol from the Marine Sponge Dysidea avara

Journal of Natural Products, 1989
A new derivative of avarol, monoacetyl avarol, has been isolated from the sponge Dysidea avara. The structural elucidation and biological activities are reported.
A Crispino, A De Giulio, S De Rosa, G Strazzullo   +3 more
openaire   +3 more sources

New Avarone and Avarol Derivatives from the Marine Sponge Dysidea cinerea

Journal of Natural Products, 1991
Six new avarol and avarone derivatives, 3'-hydroxyavarone [3], 3',6'-dihydroxyavarone [4], 6'-hydroxyavarol [5], 6'-acetoxyavarol [6], 6'-acetoxyavarone [7], and 6'-hydroxy-4'-methoxyavarone [8], are reported from the Red Sea sponge Dysidea cinerea.
S, Hirsch, A, Rudi, Y, Kashman, Y, Loya
openaire   +2 more sources

ChemInform Abstract: Further Bioactive Derivative of Avarol from Dysidea avara.

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. DE GIULIO, S. DE ROSA, G. DI VINCENZO, G. STRAZZULLO   +3 more
openaire   +1 more source

ChemInform Abstract: Enantiospecific Total Synthesis of (+)‐ and (‐)‐Avarone and ‐Avarol.

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
E. P. LOCKE, S. M. HECHT
openaire   +1 more source

Synthesis and evaluation of diverse thio avarol derivatives as potential UVB photoprotective candidates

Bioorganic & Medicinal Chemistry Letters, 2007
Semisynthesis of 13 new thio avarol derivatives (4-16) and in vitro evaluation on the photodamage response induced by UVB irradiation are described. Their ability to inhibit NF-kappaB activation and TNF-alpha generation in HaCaT cells as well as their antioxidant capacity in human neutrophils has also been studied.
María, Amigó, María C, Terencio, Miguel, Payá, Carmine, Iodice, Salvatore, De Rosa   +4 more
openaire   +2 more sources

Cell Biological Aspects of HIV-1 Infection: Effect of the Anti-HIV-1 Agent Avarol

International Journal of Sports Medicine, 1991
HTLV-I, II, HIV-1, 2 and other retroviruses possess genes for the transcriptional activators, tax and tat, the expression of which is closely related with the pathogenesis of leukemia and human immunodeficiency syndrome (AIDS) and induced by the virus infection.
W E, Müller, H C, Schröder
openaire   +2 more sources

Avarol a novel sesquiterpenoid hydroquinone with a rearranged drimane skeleton from the sponge

Tetrahedron Letters, 1974
Avarol (I) and the corresponding quinone (avarone) were isolated from D. avara and their structures detd. by chem. and spectral methods.
L. Minale, RICCIO, Raffaele, G. Sodano
openaire   +2 more sources

Biological activities of avarol derivatives, I: Amino-derivatives

1990
Nine amino derivatives, compounds 3-11, of avarone were synthesized. Their antibacterial and cytotoxic activities are evaluated, and the results of a prescreen for antitumor effects are reported.
R Cozzolino, A De Giulio, S De Rosa, G Strazzullo MJ Gasic, D Sladic, M Zlatovic   +5 more
openaire   +1 more source

Enantioselektive Totalsynthese von Avarol und Avaron

Angewandte Chemie, 1999
Taotao Ling, Alan X. Xiang, Emmanuel A. Theodorakis   +2 more
openaire   +2 more sources