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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Med+Chem
2015 ; 58
(15
): 6002-17
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Design, Synthesis, and Characterization of 3-(Benzylidene)indolin-2-one
Derivatives as Ligands for ?-Synuclein Fibrils
#MMPMID26177091
Chu W
; Zhou D
; Gaba V
; Liu J
; Li S
; Peng X
; Xu J
; Dhavale D
; Bagchi DP
; d'Avignon A
; Shakerdge NB
; Bacskai BJ
; Tu Z
; Kotzbauer PT
; Mach RH
J Med Chem
2015[Aug]; 58
(15
): 6002-17
PMID26177091
show ga
A series of 3-(benzylidine)indolin-2-one derivatives were synthesized and
evaluated for their in vitro binding to alpha synuclein (?-syn), beta amyloid
(A?), and tau fibrils. Compounds with a single double bond in the 3-position had
only a modest affinity for ?-syn and no selectivity for ?-syn versus A? or tau
fibrils. Homologation to the corresponding diene analogues yielded a mixture of
Z,E and E,E isomers; substitution of the indoline nitrogen with an N-benzyl group
resulted in increased binding to ?-syn and reasonable selectivity for ?-syn
versus A? and tau. Introduction of a para-nitro group into the benzene ring of
the diene enabled separation of the Z,E and E,E isomers and led to the
identification of the Z,E configuration as the more active regioisomer. The data
described here provide key structural information in the design of probes which
bind preferentially to ?-syn versus A? or tau fibrils.