Results 81 to 90 of about 903 (123)
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Ortho‐aminobenzoic acid‐labeled bradykinins in interaction with lipid vesicles: Fluorescence study
Biopolymers, 2002AbstractThe peptide hormone bradykinin (BK) (Arg1‐Pro2‐Pro3‐Gly4‐Phe5‐Ser6‐Pro7‐Phe8‐Arg9) and its shorter homolog BK1–5 (Arg1‐Pro2‐Pro3‐Gly4‐Phe5) were labeled with the extrinsic fluorescent probe ortho‐aminobenzoic acid (Abz) bound to the N‐terminal and amidated in the C‐terminal carboxyl group (Abz‐BK‐NH2 and Abz‐BK1–5‐NH2). The fragment des‐Arg9‐BK
Turchiello, R. F. +4 more
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Journal of Photochemistry and Photobiology A: Chemistry, 1988
Abstract This paper reports on the effect of solvent viscosity on the emission spectra of a series of local anesthetic analogues containing the ortho -aminobenzoate (anthranilate) chromophore. The emission spectra of these compounds in glycerol undergo a blue shift with decreasing temperature in accordance with solvent relaxation.
W. Birmachu, J.K. Reed
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Abstract This paper reports on the effect of solvent viscosity on the emission spectra of a series of local anesthetic analogues containing the ortho -aminobenzoate (anthranilate) chromophore. The emission spectra of these compounds in glycerol undergo a blue shift with decreasing temperature in accordance with solvent relaxation.
W. Birmachu, J.K. Reed
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NMR spin–spin coupling constants in microhydrated ortho-aminobenzoic acid
Molecular Physics, 2014The influence of the hydrogen-bond formation on the NMR spin–spin coupling constants, including the Fermi contact, the diamagnetic spin–orbit, the paramagnetic spin–orbit and the spin dipole term, has been investigated for the ortho-aminobenzoic acid microhydrated with up to three water molecules.
Angsula Ghosh, Puspitapallab Chaudhuri
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Effect of hydrogen bond formation on the NMR properties of microhydrated ortho-aminobenzoic acid
Molecular Physics, 2012The influence of the hydrogen bond formation on the nuclear magnetic resonance parameters has been investigated in the case of microhydrated ortho-aminobenzoic acid (o-Abz) in the gas-phase. DFT-B3LYP/aug-cc-pVDZ predicted 1H and 13C isotropic chemical shifts with respect to TMS of the isolated o-Abz are in reasonable agreement with available ...
Angsula Ghosh +2 more
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Fluorescent properties of amino acids labeled withortho-aminobenzoic acid
Biospectroscopy, 1998ortho-Aminobenzoic acid (Abz) has been used as a convenient fluorescent donor group in internally quenched fluorescent peptides, which are employed as substrates for several proteolytic enzymes. As Abz is usually bound to the N-amino terminal of these peptides, it is of interest to investigate the Abz group fluorescent properties bound to different ...
Ito, A.S. +5 more
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Bulletin des Sociétés Chimiques Belges, 1991
AbstractFour compounds of the type [(o‐RNH‐C6H4COO)(CH3CH2CH2CH2)2Sn]2O and [(o‐CH3NH‐C6H4COO)(CH3)2Sn]2O have been prepared, characterized by 1H, 13C, 119Sn NMR, and by Mössbauer and mass spectrometry. They have been tested in vitro against two human tumour cell lines, nl.
Meriem, Abdelkader +6 more
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AbstractFour compounds of the type [(o‐RNH‐C6H4COO)(CH3CH2CH2CH2)2Sn]2O and [(o‐CH3NH‐C6H4COO)(CH3)2Sn]2O have been prepared, characterized by 1H, 13C, 119Sn NMR, and by Mössbauer and mass spectrometry. They have been tested in vitro against two human tumour cell lines, nl.
Meriem, Abdelkader +6 more
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The Reactions of Ortho Aminobenzoic Acids with Gold's Reagent: A Two Atom Lynch Pin Transformation
Synthetic Communications, 1984Abstract A series of ortho aminobenzoic acids were treated with Gold's reagent. In each case a 4-hydroxyquinazoline was produced. The resulting transformation constitutes the use of Gold's reagent as a two atom lynch pin.
John T. Gupton +2 more
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ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. MERIEM +6 more
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. MERIEM +6 more
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Effects of Microhydration on the Electronic Properties ofortho-Aminobenzoic Acid
The Journal of Physical Chemistry A, 2013High-level density functional electronic structure calculations have been performed to analyze the effect of microsolvation with water on the electronic properties of ortho-aminobenzoic acid (o-Abz). The hydrogen-bonded interaction of the o-Abz molecule with one to three water molecules, o-Abz···(H2O)n (n = 1–3), has been considered in two different ...
Vanusa Bezerra, Pachêco +1 more
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