Identification of amides derived from 1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid as potent inhibitors of human nicotinamide phosphoribosyltransferase (NAMPT)
摘要:
Potent, 1H-pyrazolo[3,4-b]pyridine-containing inhibitors of the human nicotinamide phosphoribosyltransferase (NAMPT) enzyme were identified using structure-based design techniques. Many of these compounds exhibited nanomolar antiproliferation activities against human tumor lines in in vitro cell culture experiments, and a representative example (compound 26) demonstrated encouraging in vivo efficacy in a mouse xenograft tumor model derived from the A2780 cell line. This molecule also exhibited reduced rat retinal exposures relative to a previously studied imidazo-pyridine-containing NAMPT inhibitor. Somewhat surprisingly, compound 26 was only weakly active in vitro against mouse and monkey tumor cell lines even though it was a potent inhibitor of NAMPT enzymes derived from these species. The compound also exhibited only minimal effects on in vivo NAD levels in mice, and these changes were considerably less profound than those produced by an imidazo-pyridine-containing NAMPT inhibitor. The crystal structures of compound 26 and the corresponding PRPP-derived ribose adduct in complex with NAMPT were also obtained. (C) 2013 Elsevier Ltd. All rights reserved.
NOVEL COMPOUNDS AND COMPOSITIONS FOR THE INHIBITION OF NAMPT
申请人:Bair Kenneth W.
公开号:US20140294805A1
公开(公告)日:2014-10-02
The present invention relates to compounds and compositions for the inhibition of NAMPT, their synthesis, applications and antidotes. An illustrative compound of the invention is shown below:
Compounds and compositions for the inhibition of NAMPT
申请人:Forma TM, LLC
公开号:US10272072B2
公开(公告)日:2019-04-30
The present invention relates to compounds and compositions for the inhibition of NAMPT, their synthesis, applications and antidotes. An illustrative compound of the invention is shown below:
Identification of nicotinamide phosphoribosyltransferase (NAMPT) inhibitors with no evidence of CYP3A4 time-dependent inhibition and improved aqueous solubility
作者:Mark Zak、Bianca M. Liederer、Deepak Sampath、Po-wai Yuen、Kenneth W. Bair、Timm Baumeister、Alexandre J. Buckmelter、Karl H. Clodfelter、Eric Cheng、Lisa Crocker、Bang Fu、Bingsong Han、Guangkun Li、Yen-Ching Ho、Jian Lin、Xiongcai Liu、Justin Ly、Thomas O’Brien、Dominic J. Reynolds、Nicholas Skelton、Chase C. Smith、Suzanne Tay、Weiru Wang、Zhongguo Wang、Yang Xiao、Lei Zhang、Guiling Zhao、Xiaozhang Zheng、Peter S. Dragovich
DOI:10.1016/j.bmcl.2014.12.026
日期:2015.2
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 cLogD(7.4) 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. (C) 2014 Elsevier Ltd. All rights reserved.