Synthesis of tetrahydroxybiphenyls and tetrahydroxyterphenyls and their evaluation as amyloid-β aggregation inhibitors
作者:Craig B. Stevens、James M. Hanna、Robin K. Lammi
DOI:10.1016/j.bmcl.2013.01.076
日期:2013.3
3,3',4,4'-Tetrahydroxybiphenyl and three isomeric 3,3 '',4,4 ''-tetrahydroxyterphenyls with varying geometries around the central phenyl ring have been synthesized and evaluated for their in vitro activity against aggregation of Alzheimer's amyloid-beta peptide (A beta). Results from Congo red spectral-shift assays reveal that all four compounds successfully inhibit association of A beta monomers. For the tetrahydroxyterphenyls, efficacy varies with linker geometry: the ortho-arrangement affords the most successful inhibition and the para-geometry the least, perhaps due to differing abilities of these compounds to bind A beta. Of the four small molecules studied, 3,3',4,4'-tetrahydroxybiphenyl is the most effective inhibitor, reducing A beta aggregation by 50% when present in stoichiometric concentrations. (C) 2013 Elsevier Ltd. All rights reserved.