TRICYCLIC HETEROAROMATIC COMPOUNDS AS ALPHA-SYNUCLEIN LIGANDS
申请人:Tu Zhude
公开号:US20130315825A1
公开(公告)日:2013-11-28
Derivatives of phenothiazine, phenoxazine, and phenazine compounds and their use as α-synuclein ligands are described. Also described are methods of using these compounds and their radiolabeled analogs for the detection, monitoring, and treatment of synucleinopathies, including Parkinson's disease.
Synthesis and in vitro evaluation of α-synuclein ligands
作者:Lihai Yu、Jinquan Cui、Prashanth K. Padakanti、Laura Engel、Devika P. Bagchi、Paul T. Kotzbauer、Zhude Tu
DOI:10.1016/j.bmc.2012.06.023
日期:2012.8
Accumulation of misfolded alpha-synuclein in Lewy bodies and Lewy neurites is the pathological hallmark of Parkinson's disease (PD). To identify ligands having high binding potency toward aggregated alpha-synuclein, we synthesized a series of phenothiazine derivatives and assessed their binding affinity to recombinant alpha-synuclein fibrils using a fluorescent thioflavin T competition assay. Among 16 new analogues, the in vitro data suggest that compound 11b has high affinity to alpha-synuclein fibrils (K-i = 32.10 +/- 1.25 nM) and compounds 11d, 16a and 16b have moderate affinity to alpha-synuclein fibrils (K-i approximate to 50-100 nM). Further optimization of the structure of these analogues may yield compounds with high affinity and selectivity for aggregated alpha-synuclein. (C) 2012 Elsevier Ltd. All rights reserved.