Synthesis, NMR, DFT and antimicrobial studies of Zn(II) complexes with N-benzyloxycarbonyl-S-alanine

Abstract

In this study, the first complexes of Zn(II) with the N-benzyloxycarbonyl-S-alaninato ligand (N-Boc-S-ala) were synthesized. The new complexes were characterized by elemental analysis, conductometric measurements, IR, 1 H-NMR, 13 C-NMR and 2D-NMR spectroscopy. On the basis of the experimental data, tetrahedral geometry of the Zn(II) complexes was proposed. A very good agreement between the NMR and DFT calculated data was obtained. Investigation of antimicrobial activity of the newly synthesized complexes was also performed. It was established that [Zn(N-Boc-S-ala) 2 ] was selective and acts only on Candida albicans.

Development and Evaluation of a Kinetic‐Spectrophotometric Method for Determination of Arginine

“…The oxidation of purpurin with hydrogen peroxide in the presence of cobalt(II) as a catalyst in a carbonate buffer solution gives a colorless product. 19 It was observed that a small amount of arginine inhibits this reaction. The rate of the reaction is inversely proportional to the concentration of this amino acid.…”

MIXED-LIGAND OXO/ DIOXOVANADIUM (V) COMPLEXES INCORPORATING BIDENTATE AND TRIDENTATE DONOR HYDRAZONES AND o-PHENYLENEDIAMINE

“…Also, in the 1 H NMR spectrum of ligands showed a signal at δ 8.65 ppm which is caused by the NH group. In complexes this signal was shifted to higher field in the spectra[38,39].There are signals at 7.87 and 7.88 ppm in the 1 H NMR spectrum of ligands were assigned to azomethine proton (H-C=N) these signals shifted to upfield due to the participation of 944 IJBPAS, May, 2019, 8(5)…”