1362142-24-2Relevant articles and documents
Identification of nicotinamide phosphoribosyltransferase (NAMPT) inhibitors with no evidence of CYP3A4 time-dependent inhibition and improved aqueous solubility
Zak, Mark,Liederer, Bianca M.,Sampath, Deepak,Yuen, Po-Wai,Bair, Kenneth W.,Baumeister, Timm,Buckmelter, Alexandre J.,Clodfelter, Karl H.,Cheng, Eric,Crocker, Lisa,Fu, Bang,Han, Bingsong,Li, Guangkun,Ho, Yen-Ching,Lin, Jian,Liu, Xiongcai,Ly, Justin,O'Brien, Thomas,Reynolds, Dominic J.,Skelton, Nicholas,Smith, Chase C.,Tay, Suzanne,Wang, Weiru,Wang, Zhongguo,Xiao, Yang,Zhang, Lei,Zhao, Guiling,Zheng, Xiaozhang,Dragovich, Peter S.
, p. 529 - 541 (2015/03/05)
Herein we report the optimization efforts to ameliorate the potent CYP3A4 time-dependent inhibition (TDI) and low aqueous solubility exhibited by a previously identified lead compound from our NAMPT inhibitor program (1, GNE-617). Metabolite identification studies pinpointed the imidazopyridine moiety present in 1 as the likely source of the TDI signal, and replacement with other bicyclic systems was found to reduce or eliminate the TDI finding. A strategy of reducing the number of aromatic rings and/or lowering c Log D7.4 was then employed to significantly improve aqueous solubility. These efforts culminated in the discovery of 42, a compound with no evidence of TDI, improved aqueous solubility, and robust efficacy in tumor xenograft studies.
Structure-based discovery of novel amide-containing nicotinamide phosphoribosyltransferase (Nampt) inhibitors
Zheng, Xiaozhang,Bauer, Paul,Baumeister, Timm,Buckmelter, Alexandre J.,Caligiuri, Maureen,Clodfelter, Karl H.,Han, Bingsong,Ho, Yen-Ching,Kley, Nikolai,Lin, Jian,Reynolds, Dominic J.,Sharma, Geeta,Smith, Chase C.,Wang, Zhongguo,Dragovich, Peter S.,Gunzner-Toste, Janet,Liederer, Bianca M.,Ly, Justin,O'Brien, Thomas,Oh, Angela,Wang, Leslie,Wang, Weiru,Xiao, Yang,Zak, Mark,Zhao, Guiling,Yuen, Po-Wai,Bair, Kenneth W.
, p. 6413 - 6433 (2013/09/23)
Crystal structures of several urea- and thiourea-derived compounds in complex with the nicotinamide phosphoribosyltransferase (Nampt) protein were utilized to design a potent amide-containing inhibitor bearing an aza-indole moiety (7, Nampt BC IC50 = 9.0 nM, A2780 cell proliferation IC 50 = 10 nM). The Nampt-7 cocrystal structure was subsequently obtained and enabled the design of additional amide-containing inhibitors which incorporated various other fused 6,5-heterocyclic moieties and biaryl sulfone or sulfonamide motifs. Additional modifications of these molecules afforded many potent biaryl sulfone-containing Nampt inhibitors which also exhibited favorable in vitro ADME properties (microsomal and hepatocyte stability, MDCK permeability, plasma protein binding). An optimized compound (58) was a potent inhibitor of multiple cancer cell lines (IC50 10 nM vs U251, HT1080, PC3, MiaPaCa2, and HCT116 lines), displayed acceptable mouse PK properties (F = 41%, CL = 52.4 mL/min/kg), and exhibited robust efficacy in a U251 mouse xenograft model.
