Toward optimization of the second aryl substructure common to transthyretin amyloidogenesis inhibitors using biochemical and structural studies.
Toward optimization of the second aryl substructure common to transthyretin amyloidogenesis inhibitors using biochemical and structural studies.
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DOI:
10.1021/jm801347s
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发表时间:
2009-02-26
影响因子:
7.3
通讯作者:
Kelly JW
中科院分区:
文献类型:
--
作者:
Johnson SM;Connelly S;Wilson IA;Kelly JW
Transthyretin (TTR) amyloidogenesis inhibitors are typically composed of two aromatic rings and a linker. We have previously established optimal structures for one aromatic ring and the linker. Herein, we employ a suboptimal linker and an optimal aryl-X substructure to rank order the desirability of aryl-Z substructures–using a library of 56 N-(3,5-dibromo-4-hydroxyphenyl)benzamides. Co-consideration of amyloid inhibition potency and ex-vivo plasma TTR binding selectivity data reveal that 2,6; 2,5; 2; 3,4,5 and 3,5 aryls bearing small substituents generate the most potent and selective inhibitors, in descending order. These benzamides generally lack undesirable thyroid hormone receptor binding and COX-1 inhibition activity. Three high-resolution TTR•inhibitor crystal structures (1.31-1.35 Å) provide insight into why these inhibitors are potent and selective, enabling future structure-based design of TTR kinetic stabilizers.
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