Preparation of 2-substituted 8-quinolinols containing C, N, O-donor atoms and its PdII or PtII complexes
作者:Akio Yoneda、George R. Newkome、Kevin J. Theriot
DOI:10.1016/0022-328x(91)86210-h
日期:1991.1
2-Substituted 8-quinolinols possessing two- (4) or three- (6) carbon side chains have been prepared from 2-formyl-8-quinolinol. A carbanion, generated on the side chain, serves as the C-donor of the bonding triad. The complexation with PdII or PtII salts in the presence of pyridine, as an external ligand, afforded the desired neutral chelates having MC σ-bond as well as the 2:1 ML2 complex, possessing
具有2-(4)或三(6)个碳侧链的2-取代的8-喹啉醇已经由2-甲酰基-8-喹啉醇制备。在侧链上产生的碳负离子充当键合三联体的C受体。在作为外部配体的吡啶存在下,与Pd II或Pt II盐络合,得到所需的具有MCσ键的中性螯合物以及具有完整次甲基质子的2:1 ML 2络合物。在6c具有乙酰丙酮基侧基的情况下,1 H NMR光谱显示烯醇形式占优势,配位后,2:1 ML 2情结形成了。由于这些新的配体具有三个不同的杂给体原子,因此,通过使用三(正丁基)膦作为外部配体,制备了包含四个不同的(C,N,O,P)配位位点的新型钯配合物。
Site-specific tagging proteins with a rigid, small and stable transition metal chelator, 8-hydroxyquinoline, for paramagnetic NMR analysis
作者:Yin Yang、Feng Huang、Thomas Huber、Xun-Cheng Su
DOI:10.1007/s10858-016-0011-7
日期:2016.2
protein-2V-8HQ adduct forms a stable complex with transition metal ions, Mn(II), Co(II), Ni(II), Cu(II) and Zn(II). The paramagnetic effects generated by these transition metal ions were evaluated by NMR spectroscopy. We show that 2V-8HQ is a rigid and stable transition metal binding tag. The coordination of the metal ion can be assisted by protein sidechains. More importantly, tunable paramagnetic tensors
SYNTHESIS OF 2-VINYL-8-QUINOLINOL AND MEASUREMENT OF STABILITY OF ITS METAL COMPLEXES
作者:Akio Yoneda、Takatsugu Azumi
DOI:10.1246/cl.1984.1191
日期:1984.7.5
2-Vinyl-8-quinolinol was prepared in 30% yield from 2-formyl-8-quinolinol by Wittig reaction. The acid dissociation constants of 2-vinyl-8-quinolinol and the stability constants of the chelates of the reagent with some divalent metals have been determined by titration techniques. The chelates are less stable than those of 8-quinolinol and 2-methyl-8-quinolinol.
The present invention describes a method for the treatment of a neurological condition in a subject which comprises administering to a subject in need thereof a therapeutically effect amount of a compound of the formula
or pharmaceutically acceptable salts, hydrates, or solvates thereof.
SURFACE-TREATED STEEL SHEET HAVING CHEMICAL CONVERSION RESIN COATING AND PROCESS FOR PRODUCING THE SAME
申请人:Nippon Steel Corporation
公开号:EP0776992A1
公开(公告)日:1997-06-04
A surface-treated steel sheet with a resin-based chemical treatment coating on the steel sheet surface, having poorly soluble chromate colloid particles finely dispersed in a matrix resin such that the mean particle size of the dispersed particles is under 1 µm.