Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Junzo Hirano"'
Publikováno v:
Journal of Fluorescence. 20:615-624
A novel fluorescence enhancement-type derivatizing reagent for amino compounds, 6,7-difluoro-1,4-dihydro-1-methyl-4-oxo-3-quinolinecarboxylic acid (FMQC), was developed. FMQC reacts with aliphatic primary amino compounds to afford strong fluorescent
Publikováno v:
Tetrahedron Letters. 48:4861-4864
A new fluorescent chemosensor, 1,10-phenanthroline-4,7-dione (1), which is capable of the ratiometric sensing of anions in aqueous MeCN, was developed. Chemosensor 1 recognized an anion via two NH groups in the molecule, and showed a much higher affi
Publikováno v:
Tetrahedron. 62:10065-10071
4-Quinolone (4-QO) was evaluated as a simple and novel fluorescent anion sensor, and the modification of its emission color was carried out. The series of 4-QO derivatives having molecular orbitals with different energy levels was designed by substit
Publikováno v:
Journal of Chromatography A. 1059:225-231
6-Methoxy-4-quinolone (6-MOQ, 1 ), an oxidation product derived from 5-methoxyindole-3-acetic acid, is a novel fluorophore, which has several useful characteristics for biomedical analysis. Compound 1 has strong fluorescence with a large Stokes’ sh
Autor:
Hiromi Hayashi, Tatsunosuke Tomita, Hiroko Fukuda, Kenji Hamase, Kiyoshi Zaitsu, Junzo Hirano
Publikováno v:
Analytical Biochemistry. 316:154-161
The amount of endogenous melatonin in the individual pineal glands of inbred mice has been determined using reversed-phase micro-high-performance liquid chromatography after precolumn oxidation of melatonin to a compound having strong fluorescence. T
Autor:
Yurika Miyoshi, Tsuneaki Kaneko, Junzo Hirano, Akiko Morikawa, Wolfgang Lindner, Masashi Mita, Kyoko Ueno, Kiyoshi Zaitsu, Kenji Hamase, Hai Han
Publikováno v:
Journal of chromatography. A. 1217(7)
A validated two-dimensional HPLC system combining a microbore-monolithic ODS column and a narrowbore-enantioselective column has been established for a sensitive and simultaneous analysis of hydrophilic amino acid enantiomers (His, Asn, Ser, Gln, Arg
Publikováno v:
Luminescence : the journal of biological and chemical luminescence. 23(5)
Dual fluorescent compounds are useful platforms for the development of ratiometric probes and sensors. We have developed a new series of dual fluorescent compounds, 1-aryl-substituted 6-methoxy-4-quinolones, and investigated their structural and phot
Publikováno v:
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences. 811(2)
A sensitive and accurate internal standard method to determine melatonin in mammalian tissues and physiological fluids has been described. This method includes the oxidation of melatonin to a highly fluorescent compound, N-[(6-methoxy-4-oxo-1,4-dihyd
Publikováno v:
Analytical Sciences: X-ray Structure Analysis Online. 21:X45-X46
The title compound, 6-methoxy-4-quinolone (3), was synthesized by the oxidation of 5-methoxyindole-3-acetic acid (2), and its crystal structure was determined by X-ray diffraction analysis. The compound crystallized in the monoclinic system, space gr
Publikováno v:
Analytical Sciences: X-ray Structure Analysis Online. 20:X115-X116
The crystal structure of N-[(6-methoxy-4-oxo-1,4-dihydroquinolin-3-yl)methyl]-2,2-dimethylpropanamide (2) was determined by X-ray diffraction analysis. The compound crystallized in the triclinic system, space group P1, with cell parameters of a = 7.8