Palladium(II) complex with S-allyl-L-cysteine: new solid-state NMR spectroscopic measurements, molecular modeling and antibacterial assays.
Nuclear magnetic resonance studies, molecular modeling and antibacterial assays of the palladium(II) complex with S-allyl-L-cysteine (deoxyalliin) are presented. Studies based on solid and solution 13C and 15N nuclear magnetic resonance (NMR) spectroscopy confirmed that the palladium(II) complex preserved the same structural arrangement in both states, with no modifications on coordination sphere when dissolved in water. Density functional theory (DFT) studies stated that the trans isomer is the most stable one. Antibacterial activities of S-allyl-L-cysteine and its palladium(II) complex were evaluated by antibiogram assays using the disc diffusion method. The palladium(II) complex showed an effective antibacterial activity against Staphylococcus aureus (Gram-positive), Escherichia coli and Pseudomonas aeruginosa (Gram-negative) bacterial cells.
Instituto de Química, Universidade Estadual de Campinas-UNICAMP, Cidade Universitária Zeferino Vaz, s/n, CP 6154, CEP 13083-970, Campinas, SP, Brazil.
Marcelle B M
MB
Spera
Frederico A
FA
Quintão
Diego K D
DK
Ferraresi
Wilton R
WR
Lustri
Alviclér
A
Magalhães
André L B
AL
Formiga
Pedro P
PP
Corbi
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D003545:Cysteine / Q000031:analogs & derivatives* / Q000737:chemistry / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests / Q000379:methods*; D008958:Models, Molecular; D010165:Palladium / Q000737:chemistry* / Q000494:pharmacology*; D012996:Solutions
D000900:Anti-Bacterial Agents; D012996:Solutions; D010165:Palladium; C065299:S-allylcysteine; D003545:Cysteine