Nicotinamide derivatives useful as pde4 inhibitors
申请人:Barber Gordon Christopher
公开号:US20060178408A1
公开(公告)日:2006-08-10
This invention relates to nicotinamide derivatives of general formula (I):
in which R
1
, Z and R
2
have the meanings defined herein, and to processes for the preparation of, intermediates used in the preparation of, compositions containing and the uses of such derivatives.
This invention relates to nicotinamide derivatives of general formula (I):
in which R
1
, Z and R
2
have the meanings defined herein, and to processes for the preparation of, intermediates used in the preparation of, compositions containing and the uses of such derivatives.
Structure-Based Optimization of a Small Molecule Antagonist of the Interaction Between WD Repeat-Containing Protein 5 (WDR5) and Mixed-Lineage Leukemia 1 (MLL1)
WD repeat-containing protein 5 (WDR5) is an important component of the multiprotein complex essential for activating mixed-lineage leukemia 1 (MLL1). Rearrangement of the MLL1 gene is associated with onset and progression of acute myeloid and lymphoblastic leukemias, and targeting the WDR5-MLL1 interaction may result in new cancer therapeutics. Our previous work showed that binding of small molecule ligands to WDR5 can modulate its interaction with MLL1, suppressing MLL1 methyltransferase activity. Initial structure activity relationship studies identified N-(2-(4-methylpiperazin-1-yl)-5-substituted-phenyl) benzamides as potent and selective antagonists of this protein protein interaction. Guided by crystal structure data and supported by in silico library design, we optimized the scaffold by varying the C-1 benzamide and C-S substituents. This allowed us to develop the first highly potent (K-disp < 100 nM) small molecule antagonists of the WDR5-MLL1 interaction and demonstrate that N-(4-(4-methylpiperazin-1-yl)-3'-(morpholinomethyl)-[1,1'-biphenyl]-3-yl)-6-oxo-4-(trifluoromethyl)-1,6-dihydropyridine-3-carboxamide 16d (OICR-9429) is a potent and selective chemical probe suitable to help dissect the biological role of WDR5.
v. Euler et al., Arkiv foer Kemi, 1953, vol. 5, p. 251,252