Direct electrochemical synthesis of novel transition metal chelates of tridentate azomethinic ligands
摘要:
New chelates of the type ML(L-1)(n). MeOH (n = 1, 2) were obtained on the basis of the tridentate azomethinic ligands 2-N-tosylamine(2'-hydroxybenzal)aniline (L) and 2-N-tosylamine(2'-tosylaminobenzal)aniline (L-1) and zero-valent transition metals (Co, Ni, Cu, Zn, Cd) under electrosynthesis conditions. The mononuclear character of these products and the participation of N2O- or N-3 groups of the azomethinic Ligands in the coordination are demonstrated by IR, H-1 NMR spectral and magnetic data (77-293 K). (C) 1999 Elsevier Science Ltd, All rights reserved.
Synthesis and Characterization of Homoleptic and Heteroleptic Cobalt, Nickel, Copper, Zinc and Cadmium Compounds with the 2‐(Tosylamino)‐
<i>N</i>
‐[2‐(tosylamino)benzylidene]aniline Ligand
作者:Antonio Sousa‐Pedrares、Joaquin A. Viqueira、Jorge Antelo、Elena Labisbal、Jaime Romero、Antonio Sousa、Otaciro R. Nascimento、José A. García‐Vázquez
DOI:10.1002/ejic.201001356
日期:2011.5
The electrochemical oxidation of anodic metal (cobalt, nickel, copper, zinc and cadmium) in an acetonitrile solution of the Schiff-base ligand 2-(tosylamino)-N-[2-(tosylamino)benzylidene]aniline (H2L) afforded the homoleptic compounds [ML]. The addition of 1,1-diphenylphosphanylmethane (dppm), 2,2′-bipyridine (bipy) or 1,10-phenanthroline (phen) to the electrolytic phase gave the heteroleptic complexes
Sphingoid compounds for prophylaxis and/or therapy of a viral infection
申请人:Harbins Ruhr Bioscience, Inc.
公开号:US10688065B2
公开(公告)日:2020-06-23
Provided are processes for the prevention or treatment of viral infection in a subject. Some aspects provide administration of a sphingoid compound, optionally sphingosine, an active ingredient that activates generation of a sphingoid base, optionally of sphingosine; or an active agent that inhibits the degradation of a sphingoid base, optionally of sphingosine, to a subject such as a human. By increasing the local concentration of sphingosine in a subject or an area of a subject to which the composition is administered such as the nose or interior of the nose or portion thereof, the ability of viruses to infect the subject or cells thereof is reduced thereby treating of preventing infection by the virus.
Sphingoid compounds for prophylaxis and/or therapy of coronaviridae infection
申请人:Harbins Ruhr Bioscience, Inc.
公开号:US11298412B2
公开(公告)日:2022-04-12
Provided are processes for the prevention or treatment of infection by SARS-CoV-2. Some aspects provide administration of a sphingoid compound, optionally sphingosine, an active ingredient that activates generation of a sphingoid base, optionally of sphingosine; or an active agent that inhibits the degradation of a sphingoid base, optionally of sphingosine, to a subject such as a human. By increasing the local concentration of sphingosine in a subject or an area of a subject to which the composition is administered such as the airways, nose or interior of the nose or portion thereof, the ability or SARS-CoV-2 to infect the subject or cells thereof is reduced thereby treating of preventing infection by the virus.
Electrochemical synthesis of adducts of 2-aminopyridine or methanol in metal chelates of a N,N,N-tridentate Schiff base ligand. X-ray crystal structures of the Ni(II) and Zn(II) derivatives
作者:D.A. Garnovskii、M.F.C. Guedes da Silva、M.N. Kopylovich、A.D. Garnovskii、J.J.R. Fraústo da Silva、A.J.L. Pombeiro
DOI:10.1016/s0277-5387(03)00104-9
日期:2003.5
The electrochemical syntheses of series of novel adducts of 2-aminopyridine and methanol in Co(II), Ni(II), Cu(II) or Zn(II) chelates of the N,N,N-tridentate basic form of the Schiff base 2-N-tosylamino(2'-tosylaminobenzylidene)aniline (H2L), [M(L)L'] (M = Co, Ni, Zn, L' = 2-aminopyridine; M = Cu, L' = CH3OH), were performed by using the corresponding metal as a sacrificial anode. The compounds were characterized by elemental analysis, IR spectroscopy, FAB mass spectrometry, H-1 NMR and magnetic measurements. The crystal structures of the Zn and Ni derivatives as well as of the Schiff base have been determined by X-ray diffraction. In the 2-aminopyridine complexes this ligand is bound to the metal through the endocyclic nitrogen whereas the aminogroup is involved in intramolecular N-(HO)-O-... hydrogen bonds with one of the tosyl SO2 groups. (C) 2003 Elsevier Science Ltd. All rights reserved.