1363131-75-2Relevant articles and documents
Structure-based identification of ureas as novel 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.,Oh, Angela,Wang, Weiru,Zak, Mark,Gunzner-Toste, Janet,Zhao, Guiling,Yuen, Po-Wai,Bair, Kenneth W.
, p. 4921 - 4937 (2013/07/26)
Nicotinamide phosphoribosyltransferase (Nampt) is a promising anticancer target. Virtual screening identified a thiourea analogue, compound 5, as a novel highly potent Nampt inhibitor. Guided by the cocrystal structure of 5, SAR exploration revealed that the corresponding urea compound 7 exhibited similar potency with an improved solubility profile. These studies also indicated that a 3-pyridyl group was the preferred substituent at one inhibitor terminus and also identified a urea moiety as the optimal linker to the remainder of the inhibitor structure. Further SAR optimization of the other inhibitor terminus ultimately yielded compound 50 as a urea-containing Nampt inhibitor which exhibited excellent biochemical and cellular potency (enzyme IC50 = 0.007 μM; A2780 IC50 = 0.032 μM). Compound 50 also showed excellent in vivo antitumor efficacy when dosed orally in an A2780 ovarian tumor xenograft model (TGI of 97% was observed on day 17).
