Substituted Quinoline Quinones as Surrogates for the PQQ Cofactor: An Electrochemical and Computational Study
摘要:
Pyrroloquinoline quinones (PQQ) are important cofactors that shuttle redox equivalents in diverse metalloproteins. Quinoline 7,8-quinones have been synthesized and characterized as surrogates for PQQ to elucidate redox energetics within metalloenzyme active sites. The quinoline 7,8-quinones were accessed using polymer-supported iodoxybenzoic acid and the compounds evaluated using solution electrochemistry. Together with a family of quinones, the products were evaluated computationally and used to generate a predictive correlation between a computed ?G and the experimental reduction potentials.
Quinoline-2,4-dicarboxylic acids: Synthesis and evaluation as inhibitors of the glutamate vesicular transport system
作者:Christina N. Carrigan、C. Sean Esslinger、Richard D. Bartlett、Richard J. Bridges、Charles M. Thompson
DOI:10.1016/s0960-894x(99)00444-8
日期:1999.9
Twenty-six quinoline-2,4-dicarboxylic acids (QDC's) were synthesized by a modified Doebner-von Miller pathway and tested as inhibitors against the glutamate vesicular transport (GVT) protein. The QDC's were active as inhibitors with the most potent QDC's found to contain halogens at the 6-/8-position, a hydroxyl at the 8-position, or a tethered aromatic moiety at the 6- or 7-position of the quinoline. (C) 1999 Elsevier Science Ltd. All rights reserved.