Targeting a Large Active Site: Structure‐Based Design of Nanomolar Inhibitors of
<i>Trypanosoma brucei</i>
Trypanothione Reductase
作者:Raoul De Gasparo、Ondrej Halgas、Dora Harangozo、Marcel Kaiser、Emil F. Pai、R. Luise Krauth‐Siegel、François Diederich
DOI:10.1002/chem.201901664
日期:2019.9.2
73 nm, which is fully selective against human glutathione reductase (hGR). The best ligands exhibited in vitro IC50 values (half-maximal inhibitory concentration) against the HAT pathogen, T. brucei rhodesiense, in the mid-nanomolar range, reaching down to 50 nm. X-Rayco-crystalstructures confirmed the binding mode of the ligands and revealed the presence of a HEPES buffer molecule in the large active
Biological Evaluation and X-ray Co-crystal Structures of Cyclohexylpyrrolidine Ligands for Trypanothione Reductase, an Enzyme from the Redox Metabolism of Trypanosoma
作者:Raoul De Gasparo、Elke Brodbeck-Persch、Steve Bryson、Nina B. Hentzen、Marcel Kaiser、Emil F. Pai、R. Luise Krauth-Siegel、François Diederich
DOI:10.1002/cmdc.201800067
日期:2018.5.8
were freely soluble and showed competitive inhibition constants (Ki) against Trypanosoma (T.) brucei TR and T. cruzi TR and in vitro activities (half‐maximal inhibitory concentration, IC50) against these parasites in the low micromolar range, with high selectivity against human glutathione reductase. X‐ray co‐crystalstructures confirmed the binding of the ligands to the hydrophobic wall of the “mepacrine
Convenient Synthesis of 1H-Indol-1-yl Boronatesvia Palladium(0)-Catalyzed Borylation of Bromo-1H-indoles with ‘Pinacolborane’
作者:Josef F. Stadlwieser、Markus E. Dambaur
DOI:10.1002/hlca.200690097
日期:2006.5
Pd0-catalyzed synthesis of a series of pinacol-type indolylboronates 3 from the corresponding bromoindole substrates 2 and pinacolborane (pinBH) as borylating agent was elaborated. The optimal catalyst system consisted of a 1 : 2 mixture of [Pd(OAc)2] and the ortho-substituted biphenylphosphine ligand L-3 (Scheme 4, Table). Our synthetic protocol was applied to the fast, preparative-scale synthesis of 1-substituted