Discovery of pyridone-containing imidazolines as potent and selective inhibitors of neuropeptide Y Y5 receptor
作者:Makoto Ando、Nagaaki Sato、Tsuyoshi Nagase、Keita Nagai、Shiho Ishikawa、Hirobumi Takahashi、Norikazu Ohtake、Junko Ito、Mioko Hirayama、Yuko Mitobe、Hisashi Iwaasa、Akira Gomori、Hiroko Matsushita、Kiyoshi Tadano、Naoko Fujino、Sachiko Tanaka、Tomoyuki Ohe、Akane Ishihara、Akio Kanatani、Takehiro Fukami
DOI:10.1016/j.bmc.2009.05.069
日期:2009.8
A series of 2-pyridone-containing imidazoline derivatives was synthesized and evaluated as neuropeptide Y Y5 receptor antagonists. Optimization of the 2-pyridone structure on the 2-position of the imidazoline ring led to identification of 1-(difluoromethyl)-5-[(4S,5S)-4-(4-fluorophenyl)-4-(6-fluoropyridin- 3-yl)-5-methyl-4,5-dihydro-1H-imidazol-2-yl] pyridin-2(1H)-one (7m). Compound 7m displayed statistically significant inhibition of food intake in an agonist-induced food intake model in SD rats and no adverse cardiovascular effects in anesthetized dogs. In addition, markedly higher brain penetrability and a lower plasma Occ90 value were observed in P-gp-deficient mdr1a (-/-) mice compared to mdr1a (+/+) mice after oral administration of 7m. (C) 2009 Elsevier Ltd. All rights reserved.