Results 101 to 110 of about 10,732 (222)
, 2010 The structure of Poly[(acetone-O)-3-((3,4-dimethoxyphenyl)(4-hydroxy-2-oxo-2H-chromen-3-yl)methyl)-(2-oxo-2H-chromen-4-olate)sodium] was determined by X-ray crystallography. The compound crystallizes in an orthorhombic system and was characterized thus P
Manolov, I. +5 more
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3-(4-Nitrobenzyl)-4H-chromen-4-one
, 2013 In the title compound, C16H11NO4, the dihedral angle between the ten-membered chromen-4-one ring system (r.m.s. deviation = 0.0095 Å) and the benzene ring is 86.16 (5)°.
Kaalin Gopaul +5 more
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ULTRASOUND ASSISTED GREEN SYNTHESIS OF 2-FURAN-2-YL-4H-CHROMEN-4-ONES FROM CHALCONES
, 2020 Objective: To report the ultrasound-assisted synthesis of some bioactive 2-furan-2-yl-4H-chromen-4-one derivatives Methods: Oxidative cyclization of chalcones using iodine in dimethyl sulfoxide for the synthesis.
VEDPATHAK, SURESH G., KAKADE, GOPAL K.
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, 2012 The in vivo sex-linked recessive lethal test was carried out in Drosophila melanogaster to investigate whether or not five substituted 4-hydroxy-2H-chromen-2-ones can modulate the genotoxicity of the well-established mutagenic agent ethyl ...
Stanić G. +4 more
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, 2006 2040-2044Cobalt(II) complexes or chromen-2-one-3-carboxy hydrazide and 2-(chromen-2'-onyl)-5-(aryl) 1,3,4-oxadiazole derivatives have been synthesized and characterized by elemental analysis, magnetic suscecptibility, molar conductance, spectral ...
Mathew, Glory +2 more
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2-Oxo-2H-chromen-4-yl 4-methylbenzoate
, 2013 The asymmetric unit of the title compound, C17H12O4, consists of two independent molecules. The chromen-2-one ring and the 4-methylbenzoate side chain are inclined to one another at a dihedral angle of 64.79 (10)° in one molecule and 88.3 ...
Adama Saba +4 more
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Chemistry ProceedingsA series of hybrid heterocyclic spiro compounds containing a tetrahydrothiophene moiety were prepared by the cascade sulfa-Michael/aldol reaction of (E)-3-[(2-oxo-5-arylfuran-3(2H)-ylidene)methyl]-4H-chromen-4-ones with 1,4-dithiane-2,5-diol under mild ...
Ekaterina M. Arzyamova +2 more
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, 2014 : (7-Hydroxy-2-oxo-2H-chromen-4-yl)-acetic acid hydrazide (2) was prepared from (7-hydroxy-2-oxo-2H-chromen-4-yl)-acetic acid ethyl ester (1) and 100 % hydrazine hydrate.
Frane Cacic +3 more
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Synthesis of substituted flavone derivatives as potent antimicrobial agents
Bulletin of the Chemical Society of Ethiopia, 2011 The biological activity of flavone has been enhanced by introducing heteroaryl moiety in C-2 position of chromone derivatives. Thus, 2-(1H-Indol-3-yl)-4H-chromen-4-one derivatives (6a-e) and 2-(2-chloroquinolin-3-yl)-4H-chromen-4-one derivatives (7a-e ...
T. Maruthavanan, P. Venkatesan
doaj
, 2009 The present invention relates to a solid pharmaceutical composition including the active principle 6-oxo-6,7,8,9,10,11-hexahydrocyclohepta[c]chromen-3-yl sulfamate.
Rolland, Alain +14 more
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