Synthesis, characterization and spectroscopy of lanthanide picrate complexes with o-(benzylsulfinyl)methylbenzoate
摘要:
Complexes of the general formula (Ln(pic)(3)(.)2.5(BSMB) (Ln=La, Ce, Nd, Sm, Eu, Tb and Er; pic=picrate, BSMB=o-(benzylsulfinyl)methylbenzoate) were prepared. The characterization of the ligand and complexes were carried out by CHN elemental analyses, lanthanide titration with EDTA, IR absorption spectroscopy, conductance measurements and emission spectroscopy (for the Eu and Sm adducts). Conductance measurements, indicate a non electrolyte behavior. The SO stretching mode is shifted to lower energies, with respect to the neat ligand, evidencing coordination through the SO group. IR data also suggest that the picrate anions are bidentate, coordinated though the phenolic and one o-nitrogroup oxygens. The transition 5D(o) --> F-5(0,1,2) for europium and (4)G(5/2) --> (6)G(5/2.7/2.9/2) for samarium with broad, non-resolved peaks, yield evidence of the polymeric nature of these complexes. (C) 2002 Elsevier Science B.V. All rights reserved.
Design, synthesis and biological activity of selective hCAs inhibitors based on 2-(benzylsulfinyl)benzoic acid scaffold
作者:Giulia Rotondi、Paolo Guglielmi、Simone Carradori、Daniela Secci、Celeste De Monte、Barbara De Filippis、Cristina Maccallini、Rosa Amoroso、Roberto Cirilli、Atilla Akdemir、Andrea Angeli、Claudiu T. Supuran
DOI:10.1080/14756366.2019.1651315
日期:2019.1.1
Abstract A large library of derivatives based on the scaffold of 2-(benzylsulfinyl)benzoic acid were synthesised and tested as atypical inhibitors against four different isoforms of human carbonic anhydrase (hCA I, II, IX and XII, EC 4.2.1.1). The exploration of the chemical space around the main functional groups led to the discovery of selective hCA IX inhibitors in the micromolar/nanomolar range