Synthesis and Biological Evaluation of (S)-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic Acids : A Novel Series of PPARγ Agonists

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A novel series of 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid derivatives were synthesized and biologically evaluated. (S)-2-Benzyl-7-[2-(5-methyl-2-phenyloxazol-4-yl)ethoxy]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (10, KY-021) was identified as a novel peroxisome proliferators-activated receptor (PPAR)γ agonist, which showed potent activity in human PPARγ (EC_<50>=11.8 nM). KY-021 reduced plasma glucose and triglyceride levels at 3mg/kg/d for 7d in male KK-A^y mice. KY-021 also decreased plasma triglyceride levels at 0.3-3mg/kg/d for 6d, and improved oral glucose tolerance at 1 and 3mg/kg/d for 7d in male Zucker fatty rats. Maximal plasma concentration of KY-021 after oral administration at 10mg/kg was 6.6μg/ml and 2.1μg/ml in male ICR mice and male SD rats, respectively. Repeated oral administration of KY-021 at 30mg/kg/d for 10 weeks had little toxicity in male SD rats. These results demonstrated that KY-021 has great potential as an efficacious and safe drug for diabetes.
公益社団法人日本薬学会の論文
2008-03-01