Results 11 to 20 of about 25,988 (242)
2-Oxo-2H-chromen-3-yl 4-tert-butylbenzoate
IUCrData, 2016 In the title coumarin derivative, C20H18O4, the benzene ring of the benzoate group is oriented at a dihedral angle of 57.55 (9)° with respect to the planar chromene ring system [maximum deviation from plane is 0.027 (2) Å].
Konan René Kambo +4 more
doaj +1 more source
The Castagnoli–Cushman Reaction
Molecules, 2023 Since the first reports of the reaction of imines and cyclic anhydrides by Castagnoli and Cushman, this procedure has been applied to the synthesis of a variety of lactams, some of them with important synthetic or biological interest.
José Luis Ramiro +4 more
doaj +1 more source
The development of human sera tests for HDL-bound serum PON1 and its lipolactonase activitys⃞
Journal of Lipid Research, 2007 Serum paraoxonase (PON1) is a lipolactonase that associates with HDL-apolipoprotein A-I (HDL-apoA-I) and thereby plays a role in the prevention of atherosclerosis. Current sera tests make use of promiscuous substrates and provide no indications regarding
Leonid Gaidukov, Dan S. Tawfik
doaj +1 more source
Potential of Slime Molds as a Novel Source for the Cosmetics Industry
Cosmetics, 2022 Nowadays, the flourishing development of modern cosmetics, and of “green cosmetics” especially, leads to rapid product innovation, with the increasing use of novel natural ingredients from unusual sources.
Maya Stoyneva-Gärtner +4 more
doaj +1 more source
Molecules, 2023 The aim of this work was to fabricate a new heterogeneous catalyst as zinc ferrite (ZF) supported on gamma-alumina (γ-Al2O3) for the conversion of cyclic ethers to the corresponding, more valuable lactones, using a solvent-free method and O2 as an ...
Naaser A. Y. Abduh +4 more
doaj +1 more source
Synthesis and Cytotoxic Activity of Some 3-Benzyl-5-Arylidenefuran-2(5H)-ones
Molecules, 2007 3-Benzyl-furan-2(5H)-one (2a) and 3-(4-bromobenzyl)-furan-2(5H)-one (2b) were treated with TBDMSOTf and converted into the corresponding tert-butyldimethyl-silylfuran ethers.
Manoel Odorico Moraes +7 more
doaj +1 more source
Formation of carboxylic acids during degradation of monosaccharides
Czech Journal of Food Sciences, 2008 The formation of low molecular carboxylic and hydroxycarboxylic acids as well as sugar and deoxysugar acids from monosaccharides (D-glucose, D-fructose, D-arabinose, DL-glyceraldehyde, and 1,3-dihydroxyacetone) was studied in three different model ...
Ondřej Novotný +2 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2010 4-Aryl-4-oxoesters undergo facile reduction of both the keto and the ester groups with methanolic NaBH4 at room temperature to yield the corresponding 1-aryl-1,4-butanediols whereas 4-alkyl-4-oxoesters furnish the corresponding 1,4-butanolides via ...
Subrata Kumar Chaudhuri +3 more
doaj +1 more source
Lactones from the Sponge-Derived Fungus Talaromyces rugulosus
Marine Drugs, 2017 The marine-derived fungus Talaromyces rugulosus isolated from the Mediterranean sponge Axinella cannabina and cultured on solid rice medium yielded seventeen lactone derivatives including five butenolides (1–5), seven (3S)-resorcylide derivatives (6–12),
Lisa Küppers +12 more
doaj +1 more source
Molecules, 2018 Three novel enantiomeric pairs of bromolactones possesing a 2,5-dimethylphenyl substituent at the β-position of the lactone ring have been synthesized from corresponding enantiomeric (E)-3-(2′,5′-dimethylphenyl)hex-4-enoic acids (4) by ...
Witold Gładkowski +9 more
doaj +1 more source