Abstract:
:We previously identified dibenzooxepine derivative 1 as a potent PPARγ ligand with a unique binding mode owing to its non-thiazolidinedione scaffold. However, while 1 showed remarkably potent MKN-45 gastric cancer cell aggregation activity, an indicator of cancer differentiation-inducing activity induced by PPARγ activation, we recognized that 1 was metabolically unstable. In the present study, we identified a metabolically soft spot, and successfully discovered 3-fluoro dibenzooxepine derivative 9 with better metabolic stability. Further optimization provided imidazo[1,2-a]pyridine derivative 17, which showed potent MKN-45 gastric cancer cell aggregation activity and excellent PK profiles compared with 9. Compound 17 exerted a growth inhibitory effect on AsPC-1/AG1 pancreatic tumor in mice. Furthermore, the decrease in the hematocrit (an indicator of localized edema, a serious adverse effect of PPARγ ligands) was tolerable even with oral administration at 200 mg/kg in healthy mice.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Yamamoto K,Tamura T,Nakamura R,Hosoe S,Matsubara M,Nagata K,Kodaira H,Uemori T,Takahashi Y,Suzuki M,Saito JI,Ueno K,Shuto Sdoi
10.1016/j.bmc.2019.115122subject
Has Abstractpub_date
2019-11-15 00:00:00pages
115122issue
22eissn
0968-0896issn
1464-3391pii
S0968-0896(19)31039-9journal_volume
27pub_type
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