872826-79-4Relevant academic research and scientific papers
Negishi cross-coupling enabled synthesis of novel NAD+-dependent DNA ligase inhibitors and SAR development
Murphy-Benenato, Kerry E.,Gingipalli, Lakshmaiah,Boriack-Sjodin, P. Ann,Martinez-Botella, Gabriel,Carcanague, Dan,Eyermann, Charles J.,Gowravaram, Madhu,Harang, Jenna,Hale, Michael R.,Ioannidis, Georgine,Jahic, Harris,Johnstone, Michele,Kutschke, Amy,Laganas, Valerie A.,Loch, James T.,Miller, Matthew D.,Oguto, Herbert,Patel, Sahil Joe
, p. 5172 - 5177 (2015)
Two novel compounds, pyridopyrimidines (1) and naphthyridines (2) were identified as potent inhibitors of bacterial NAD+-dependent DNA ligase (Lig) A in a fragment screening. SAR was guided by molecular modeling and X-ray crystallography. It was observed that the diaminonitrile pharmacophore made a key interaction with the ligase enzyme, specifically residues Glu114, Lys291, and Leu117. Synthetic challenges limited opportunities for diversification of the naphthyridine core, therefore most of the SAR was focused on a pyridopyrimidine scaffold. The initial diversification at R1 improved both enzyme and cell potency. Further SAR developed at the R2 position using the Negishi cross-coupling reaction provided several compounds, among these compounds 22g showed good enzyme potency and cellular potency.
