Discovery of furan and dihydrofuran-fused tricyclic benzo[ d ]imidazole derivatives as potent and orally efficacious microsomal prostaglandin E synthase-1 (mPGES-1) inhibitors: Part-1
作者:Nagarajan Muthukaman、Macchindra Tambe、Sanjay Deshmukh、Dnyandeo Pisal、Shital Tondlekar、Mahamadhanif Shaikh、Neelam Sarode、Vidya G. Kattige、Monali Pisat、Pooja Sawant、Srinivasa Honnegowda、Vikas Karande、Abhay Kulkarni、Dayanidhi Behera、Satyawan B. Jadhav、Ramchandra R. Sangana、Girish S. Gudi、Neelima Khairatkar-Joshi、Laxmikant A. Gharat
DOI:10.1016/j.bmcl.2017.10.062
日期:2017.12
This letter describes the synthesis and biological evaluation of furan and dihydrofuran-fused tricyclic benzo[d]imidazole derivatives as novel mPGES-1 inhibitors, capable of inhibiting an increased PGE(2) production in the disease state. Structure-activity optimization afforded many potent mPGES-1 inhibitors having <50 nM potencies in the A549 cellular assay and adequate metabolic stability in liver microsomes. Lead compounds 8l and 8m demonstrated reasonable in vitro pharmacology and pharmacokinetic properties over other compounds. In particular, 8m revealed satisfactory oral pharmacokinetics and bioavailability in multiple species like rat, guinea pig, dog and cynomolgus monkey. In addition, the representative compound 8m showed in vivo efficacy by inhibiting LPS-induced thermal hyperalgesia with an ED50 of 14.3 mg/kg in guinea pig. (C) 2017 Elsevier Ltd. All rights reserved.