Synthesis and properties of phenylogous amides

Development of novel small molecules for the treatment of ALS

Amyotrophic lateral sclerosis (ALS) is a rare and progressive neurodegenerative disease with unknown etiology. It is caused by the degeneration of motor neurons responsible for controlling voluntary muscles. It has been reported that mutations in the superoxide dismutase (SOD) 1 gene can lead to ALS. SOD1 abnormalities have been identified in both familial, as well as sporadic ALS cases. SOD2 is a highly inducible SOD that works in conjunction with SOD1. SOD2 can be induced through activation of NF-κBs. We previously reported that the novel small molecule, SRI-22818, increases NF-κB expression and activation and SOD2 levels in vitro and has activity in vivo in the SOD1-G93A reference model of ALS. We report herein the synthesis and biological evaluation of SRI-22818 analogs.

N-(4-Benzoylphenyl)pyridine-2-carbothioamide

In the asymmetric unit of the title compound, C19H14N2OS, two geometrically different molecules,AandB, are present. InA, the dihedral angles between the central benzene ring and pendant phenyl and pyridine groups are 56.79 (14) and 8.3 (2)°, respectively. The equivalent data for moleculeBare 54.08 (12) and 16.7 (2)°, respectively. An intramolecular N—H...N hydrogen bond closes anS(5) ring in each molecule and the S and O atoms have anantidisposition. In the crystal, molecules are linked by a single C—H...O interaction intoA+Bpairs.