Étude par résonance magnétique nucléaire du platine-195 de la réaction de cis-[Pt(éthylméthylsulfoxyde)2Cl2] avec un sel d'argent

1986 ◽  
Vol 64 (10) ◽  
pp. 1974-1978 ◽  
Author(s):  
F. D. Rochon ◽  
Louise Girard
Keyword(s):  
Aqueous Solution ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Résonance Magnétique ◽  
Nuclear Magnetic

The products of the reaction of cis-[Pt(EMSO)2Cl2] (EMSO = ethylmethylsulfoxide) with Ag2SO4 were studied by 195Pt nuclear magnetic resonance. The results have shown the presence of several species in aqueous solution. The reactions were done at different conditions of pH. The spectra of two isolated oligomers were also measured. The hydroxy-bridged dimer and trimer show a signal around −2900 ppm while the hydrolyzed monomers have signals around −3200 ppm. A semi-quantitative profile of the different equilibria in solution is suggested.

Etude conformationnelle par résonance magnétique nucléaire du carbone 13 de peptides à activité antalgique

1980 ◽  
Vol 58 (11) ◽  
pp. 1241-1246 ◽  
Author(s):  
Robert René Smolders ◽  
Roland Coomans ◽  
Françoise Jacquemotte ◽  
Yves Van Haverbeke ◽  
André Maquestiau ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Trans Conformation ◽  
Magnetic Resonance Studies ◽  
Ph Values ◽  
Résonance Magnétique ◽  
Nuclear Magnetic

13C Nuclear magnetic resonance studies of proline peptides with central antalgic activity (Pro-Arg, Arg-Pro, Pro-Arg-Pro, Pro-Lys-Pro) indicate a predominance of trans conformation at all pH values; but their physiological activities appear to be related to the ability of the C-terminal proline peptides to assume the cis conformation.

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