Abstract:
: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 cLogD7.4 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.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Zak M,Liederer BM,Sampath D,Yuen PW,Bair KW,Baumeister T,Buckmelter AJ,Clodfelter KH,Cheng E,Crocker L,Fu B,Han B,Li G,Ho YC,Lin J,Liu X,Ly J,O'Brien T,Reynolds DJ,Skelton N,Smith CC,Tay S,Wang W,Wang Z,Xidoi
10.1016/j.bmcl.2014.12.026subject
Has Abstractpub_date
2015-02-01 00:00:00pages
529-41issue
3eissn
0960-894Xissn
1464-3405pii
S0960-894X(14)01323-7journal_volume
25pub_type
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