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Updated: Aug 23, 2026

A Guide to Production, Crystallization, and Structure Determination of Human IKK1/α
Published on: November 2, 2018
Synthesis and structure-activity relationships of novel IKK-beta inhibitors. Part 3: Orally active anti-inflammatory
Toshiki Murata1, Mitsuyuki Shimada, Sachiko Sakakibara
1Department of Chemistry, Research Center Kyoto, Bayer Yakuhin Ltd., Kizu, Soraku, Kyoto 619-0216, Japan. muratato@kcn.ne.jp
Abstract:
A series of 2-amino-3-cyano-4-alkyl-6-(2-hydroxyphenyl)pyridine derivatives was synthesized and evaluated as I kappaB kinase beta (IKK-beta) inhibitors. Modification of a novel IKK-beta inhibitor 1 (IKK-beta IC(50)=1500 nM, Cell IC(50)=8000 nM) at the 4-phenyl ring and 6-phenol group on the pyridine core ring resulted in a marked increased in biological activities. An optimized compound, 2-amino-6-[2-(cyclopropylmethoxy)-6-hydroxyphenyl]-4-piperidin-4-yl nicotinonitrile, exhibited excellent in vitro profiles (IKK-beta IC(50)=8.5 nM, Cell IC(50)=60 nM) and a strong oral efficacy in in vivo anti-inflammatory assays (significant effects at 1mg/kg, po in arachidonic acid-induced ear edema model in mice).
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