(O-Benzoylsalicylato)copper(II) complexes as synthetic enzyme-product models for flavonol 2,4-dioxygenase
摘要:
Mononuclear complexes of the type [Cu-II(BPEA)(O-bs)], [Cu-II(BnBPA)(O-bs)]ClO4, and [Cu-II(Bn-6Me(2)BPA)(O-bs)]ClO4 [O-bsH = O-benzoylsalicylic acid, BPEAH = N,N-bis(2-pyridylmethyl)amino-2-ethanoic acid, BnBPA = N-benzyl-N,N-bis(2-pyridylmethyl)amine, Bn-6Me(2)BPA = N-benzyl-N,N-bis(6-methyl-2-pyridylmethyl)amine] were synthesized as synthetic enzyme-depside complexes, and characterized by spectroscopic measurements and X-ray crystal analysis. The oxygenation of flavonol using the above-mentioned complexes as catalyst results in the oxidative cleavage of the heterocyclic ring to give a O-benzoylsalicylic acid and CO as a mimic of quercetinase action. (C) 2005 Elsevier B.V. All rights reserved.