Results 41 to 50 of about 8,136 (224)
Acta Crystallographica Section E, 2013 In the title compound, C19H20N2O6, the pyrone and pyran rings adopt envelope conformations with the same common C atom as the flap, the dihedral angle between the planes of the remaining ring atoms being 68.27 (4)°.
G. Jagadeesan +3 more
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Acta Crystallographica Section E, 2014 In the title compound, C30H28N2O6, the pyran ring adopts a slightly distorted half-chair conformation and the pyrone ring adopts an envelope conformation, with the C atom bearing the carboxylate group as the flap. The pyrazole ring [maximum deviation = 0.
V. Vinayagam +3 more
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Two Pyrones with Antibacterial Activities from
Natural Product Communications, 2016 A new pyrone derivative, malakavalactone ( 2 ), was isolated from the acetone extract of Alpinia malaccensis fruits, along with a known compound kavalactone ( 1 ).
Tita Juwitaningsih +2 more
doaj +1 more source
Degradation of Chloroaromatics: Purification and Characterization of a Novel Type of Chlorocatechol 2,3-Dioxygenase of Pseudomonas putida GJ31 [PDF]
, 1998 A purification procedure for a new kind of extradiol dioxygenase, termed chlorocatechol 2,3-dioxygenase, that converts 3-chlorocatechol productively was developed.
Janssen, Dick B., +5 more
core +2 more sources
Chemistry – A European Journal, EarlyView.Three 2‐phosphinophenylaluminum dichloride complexes were synthesized and characterized as novel intramolecular FLPs. These FLP systems exhibit high Lewis acidity and effectively activate challenging substrates including aliphatic ketones, imines, and esters. DFT analysis revealed that strain release and Al–P dynamics govern their reactivity. Abstract (
Yoshihiro Nishimoto +2 more
wiley +1 more source
Coadsorption of Cinchona Alkaloids on Supported Palladium: Nonlinear Effects in Asymmetric Hydrogenation and Resistance of Alkaloids Against Hydrogenation [PDF]
, 2018 The transient behavior of the adsorption of cinchona alkaloid modifiers on Pd/TiO2 has been investigated in situ during the enantioselective hydrogenation of 4-methoxy-6-methyl-2-pyrone (1).
Baiker, A., Huck, W.-R, Mallat, T.
core
Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application
European Journal of Organic Chemistry, EarlyView.Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley +1 more source
Factors affecting the production of Trichoderma harzianum secondary metabolites during the interaction with different plant pathogens [PDF]
, 2009 Strains of Trichoderma spp. produce numerous bioactive secondary metabolites. The in vitro production and antibiotic activities of the major compounds synthesized by Trichoderma harzianum strains T22 and T39 against Leptosphaeria maculans, Phytophthora ...
E. L. Ghisalberti +7 more
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Orbital: The Electronic Journal of Chemistry, 2012 Complex bis (2-Oleicoyloxymethyl-5-hydroxy-gamma-pyrone) copper (II) and tris (2-Oleicoyloxymethyl-5-hydroxy-gamma-pyrone) iron (III) were prepared in ethanol using the structure "chelator conjugate kojic -lipid".
Antônio S. C. Carvalho +2 more
doaj +1 more source
Sick building syndrome: are we doing enough? [PDF]
, 2018 Health and well-being are vitally important aspects of people centric building design and are the roots of productivity. Sick building syndrome (SBS) is a collection of factors that can negatively affect physical health in several ways.
Ahmadi M. +43 more
core +3 more sources