Alternative Strategy To Obtain Artificial Imine Reductase By Exploiting Vancomycin/D-Ala-D-Ala Interactions With An Iridium Metal Complex
INORGANIC CHEMISTRY(2021)
摘要
Based on the supramolecular interaction between vancomycin Van), an antibiotic glycopeptide, and D-Ala-D-Ala (DADA) dipeptides, a novel class of artificial metalloenzymes was synthesized and characterized. The presence of an iridium(III) ligand at the N-terminus of DADA allowed the use of the metalloenzyme as a catalyst in the asymmetric transfer hydrogenation of cyclic imines. In particular, the type of link between DADA and the metal-chelating moiety was found to be fundamental for inducing asymmetry in the reaction outcome, as highlighted by both computational studies and catalytic results. Using the [IrCp*(m-I)Cl]Cl subset of Van complex in 0.1 M CH3COONa buffer at pH 5, a significant 70% (S) e.e. was obtained in the reduction of quinaldine B.
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关键词
artificial imine reductase,vancomycin/d-ala-d-ala
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