Results 91 to 100 of about 6,879 (216)
THE DETECTION AND ESTIMATION OF α-NAPHTHOQUINONE β-NAPHTHOQUINONE, PHTHALONIC ACID AND PHTHALIC ACID. [PDF]
Journal of the American Chemical Society, 1907 n ...
openaire +1 more source
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
doaj +1 more source
Synthesis and toxicity of substituted-1,4-naphthoquinones
, 2008 Naphthoquinones and their derivatives have been identified to have a broad range of biological activity. Recently, we reported the synthesis of solid-supported Fischer carbenes and their microwave-assisted Dötz benzannulation reaction producing ...
Martinez Rey, Nancy Elvira
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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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Regioselective photoacylation of substituted naphthoquinones
, 1998 Schiel C, Oelgemoller M, Mattay J. Regioselective photoacylation of substituted naphthoquinones. JOURNAL OF INFORMATION RECORDING. 1998;24(3-4):257-260.Photoreactions of aldehydes with quinones exhibit acylated hydroquinones in good yields.
Mattay, Jochen +5 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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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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Naphthoquinones from the roots of Aloe secundiflora
, 2012 Two new naphthoquinones, 5-hydroxy-3,6-dimethoxy-2-methylnaphthalene-1,4-dione and 5,8-dihydroxy-3-methoxy-2-methylnaphthalene-1,4-dione, were isolated from the roots of Aloe secundiflora together with the known compounds chrysophanol, helminthosporin ...
Yenesew, Abiy +8 more
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