The Experts below are selected from a list of 762 Experts worldwide ranked by ideXlab platform
Laila H Abdelrahman - One of the best experts on this subject based on the ideXlab platform.
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synthesis x ray crystal structures and characterization of copper ii 2 2 bipyridyl derivatives of 4 amino hippuric Acid and of l proline
Polyhedron, 1999Co-Authors: Paolo Sgarabotto, Franco Bisceglie, Giorgio Pelosi, Laila H AbdelrahmanAbstract:Abstract In this paper the synthesis and the characterization of two complexes of copper and 2,2′-bipyridyl with amino Acids 4-Aminohippuric Acid and l -proline are reported. The X-ray structure reveals for the first complex, [Cu2(OH)(OH2)(bipy)2(Am-hip)](NO3)2·4H2O, dinuclear copper(II) cations with nitrate counterions and lattice water molecules. The two metal centres are linked together by a water molecule, a hydroxyl group and the carboxylic moiety of the 4-amino-hippuric Acid, the remaining two positions on both metal centres are occupied by bipyridyl molecules. The second compound consists of monomeric [Cu(OH2)(bipy)( l -pro)]+ cations and perchlorate anions. Also in this case copper is five-coordinated in a distorted square pyramidal geometry with the bipyridine nitrogens, one carboxylate oxygen atom and the amino nitrogen of the l -proline ion on the basal plane.
Paolo Sgarabotto - One of the best experts on this subject based on the ideXlab platform.
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synthesis x ray crystal structures and characterization of copper ii 2 2 bipyridyl derivatives of 4 amino hippuric Acid and of l proline
Polyhedron, 1999Co-Authors: Paolo Sgarabotto, Franco Bisceglie, Giorgio Pelosi, Laila H AbdelrahmanAbstract:Abstract In this paper the synthesis and the characterization of two complexes of copper and 2,2′-bipyridyl with amino Acids 4-Aminohippuric Acid and l -proline are reported. The X-ray structure reveals for the first complex, [Cu2(OH)(OH2)(bipy)2(Am-hip)](NO3)2·4H2O, dinuclear copper(II) cations with nitrate counterions and lattice water molecules. The two metal centres are linked together by a water molecule, a hydroxyl group and the carboxylic moiety of the 4-amino-hippuric Acid, the remaining two positions on both metal centres are occupied by bipyridyl molecules. The second compound consists of monomeric [Cu(OH2)(bipy)( l -pro)]+ cations and perchlorate anions. Also in this case copper is five-coordinated in a distorted square pyramidal geometry with the bipyridine nitrogens, one carboxylate oxygen atom and the amino nitrogen of the l -proline ion on the basal plane.
Mohadeseh Namjou - One of the best experts on this subject based on the ideXlab platform.
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synthesis of novel azo compounds containing 5 4h oxazolone ring as potent tyrosinase inhibitors
Bioorganic & Medicinal Chemistry, 2013Co-Authors: Hooshang Hamidian, Samieh Fozooni, Roya Tagizadeh, Vahid Abbasalipour, Ali Taheri, Mohadeseh NamjouAbstract:Abstract Six new azo dyes containing of 5(4 H )-oxazolone ring were prepared by diazotization of 4-Aminohippuric Acid and coupling with N , N -dimethylaniline, 1-naphthol and 2-naphthol and condensation with 4-fluoro benzaldehyde or 4-trifluoromethoxy benzaldehyde. The new compounds were fully characterized by spectroscopic techniques. All synthesized compounds exhibited high tyrosinase inhibitory behavior. The results of mushroom tyrosinase inhibition assays indicate that the 4-trifluoromethoxy derivatives have high degrees of inhibition and N , N -dimethylaniline derivatives are better for tyrosinase inhibition than 1-naphthol and 2-naphthol derivatives. All synthesized azo compounds ( 4a – 4f ) showed the most potent mushroom tyrosinase inhibition, comparable to that of Kojic Acid and l -mimosine, as reference standard inhibitors.
Giorgio Pelosi - One of the best experts on this subject based on the ideXlab platform.
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synthesis x ray crystal structures and characterization of copper ii 2 2 bipyridyl derivatives of 4 amino hippuric Acid and of l proline
Polyhedron, 1999Co-Authors: Paolo Sgarabotto, Franco Bisceglie, Giorgio Pelosi, Laila H AbdelrahmanAbstract:Abstract In this paper the synthesis and the characterization of two complexes of copper and 2,2′-bipyridyl with amino Acids 4-Aminohippuric Acid and l -proline are reported. The X-ray structure reveals for the first complex, [Cu2(OH)(OH2)(bipy)2(Am-hip)](NO3)2·4H2O, dinuclear copper(II) cations with nitrate counterions and lattice water molecules. The two metal centres are linked together by a water molecule, a hydroxyl group and the carboxylic moiety of the 4-amino-hippuric Acid, the remaining two positions on both metal centres are occupied by bipyridyl molecules. The second compound consists of monomeric [Cu(OH2)(bipy)( l -pro)]+ cations and perchlorate anions. Also in this case copper is five-coordinated in a distorted square pyramidal geometry with the bipyridine nitrogens, one carboxylate oxygen atom and the amino nitrogen of the l -proline ion on the basal plane.
Franco Bisceglie - One of the best experts on this subject based on the ideXlab platform.
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synthesis x ray crystal structures and characterization of copper ii 2 2 bipyridyl derivatives of 4 amino hippuric Acid and of l proline
Polyhedron, 1999Co-Authors: Paolo Sgarabotto, Franco Bisceglie, Giorgio Pelosi, Laila H AbdelrahmanAbstract:Abstract In this paper the synthesis and the characterization of two complexes of copper and 2,2′-bipyridyl with amino Acids 4-Aminohippuric Acid and l -proline are reported. The X-ray structure reveals for the first complex, [Cu2(OH)(OH2)(bipy)2(Am-hip)](NO3)2·4H2O, dinuclear copper(II) cations with nitrate counterions and lattice water molecules. The two metal centres are linked together by a water molecule, a hydroxyl group and the carboxylic moiety of the 4-amino-hippuric Acid, the remaining two positions on both metal centres are occupied by bipyridyl molecules. The second compound consists of monomeric [Cu(OH2)(bipy)( l -pro)]+ cations and perchlorate anions. Also in this case copper is five-coordinated in a distorted square pyramidal geometry with the bipyridine nitrogens, one carboxylate oxygen atom and the amino nitrogen of the l -proline ion on the basal plane.
