Design and synthesis of orally bioavailable inhibitors of inducible nitric oxide synthase. Part 1: synthesis and biological evaluation of dihydropyridin-2-imines
Dihydropyridin-2-imines were synthesized and biologicallyevaluated both in vitro and in vivo using a nitric oxide inhibition assay. Compounds 1, 4, 5 and 7-11 exhibited potent activity in the inducible nitric oxide (iNOS) inhibition assay. Of these 5, 6, 9 and 10 showed 5- to 11-fold increases in isoform selectivity. Compounds 1, 5, 9 and 10 showed potent inhibitory activity in the NOx accumulation