Results 91 to 100 of about 7,497 (214)
Molecules, 2019 Bursaphelenchus xylophilus (Steiner & Buhrer) Nickle, is a serious forest pest, causing enormous economic losses in pine trees in Korea, China, Japan, and countries in Western Europe.
Deok Jea Cha +2 more
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Direct Synthesis of 5-Substituted Naphthoquinones
, 2016 Peri-metalation of 4-(dimethylamino)-1-tert-butyldimethylsilyloxynaphthalene (5) followed by reaction with an electrophile and Jones' oxidation affords 5-substituted ...
George A. Kraus (1843423) +1 more
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Synthesis and biological evaluation of new naphthoquinones derivatives
, 2020 Epub ahead of printNew substituted 1,4-naphthoquinones have been prepared in good overall yields through the naphthol route. The cytotoxicity of these compounds was tested in vitro on MCF-7 breast tumor cells.
Troin, Y. +8 more
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Complexes of Lapachol and Lawsone with Lanthanides
Natural Product Communications, 2015 Naturally occurring 2-hydroxy-1,4-naphthoquinones are well known to form readily stable complexes with transition metals. In this short communication we describe for the first time the synthesis and preliminary data about structural characterization of ...
Salvatore Genovese +3 more
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Química NovaPhytochemical study of aerial parts from Sinningia mauroana Chautems (Gesneriaceae) yielded 17 known compounds: sitosterol, stigmasterol, betulinic acid, oleanolic acid, hederagenin, maslinic acid, ursolic acid, pomolic acid, soranjidiol, methyl 4 ...
Vanessa Winiewski +4 more
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ADDITION OF UNSYMMETRICAL DIENES TO ACYL-1,4-BENZOQUINONES AND OXIDATION OF THE ADDUCTS WITH MANGANESE DIOXIDE: A REGIOSPECIFIC ROUTE TO MONO- AND DI-METHYL-1,4-NAPHTHOQUINONES [PDF]
Journal of Sciences, Islamic Republic of Iran, 2000 Regioselective Diels-Alder reactions of acyl-1,4-benzoquinones 1 with, severally, isoprene, trans-piperylene,1-acetoxy-1,3-butadiene and 1-methoxy-1,3-butadiene gave the corresponding adducts 2 in high yield.
doaj
BiomoleculesThe naphthoquinone juglone (5-hydroxynaphthalene-1,4-dione) (1) occurs abundantly in nature, especially in species belonging to the Juglandaceae family. Due to its multifaceted biological activities, this compound is considered a privileged structure in ...
Giovanni Vidari +5 more
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Regioselective bromination of 1,4-naphthoquinones
, 1981 1,4-Naphthoquinones unsymmetrically substituted in the benzenoid ring undergo bromination at the 2- and/or 3-positions. The isomeric composition of the products is strongly influenced by the conditions of bromination, addition of hydrogen bromide ...
GI Feutrill, PG Griffiths, DW Cameron
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Cytotoxicity of selected naphthoquinones on prostatic cell cultures
, 2013 This master´s thesis discusses cytotoxicity of selected naphthoquinones on prostatic cell cultures. The introductory part is dedicated to general characteristic of naphthoquinones with focus on their cytotoxicity, testing of cytotoxicity and mechanisms ...
Mondeková, Věra
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