PA-824

(S)-6,7-二氢-2-硝基-6-[[4-(三氟甲氧基)苯基]甲氧基]-5H-咪唑并[2,1-B][1,3]恶嗪Chemical Name: 2-Nitro-6(S)-[4-(trifluoromethoxy)benzyloxy]-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine
CAS No. 187235-37-6
项目整合开发状态: Preclinical
项目研究机构: Chiron (Originator), PathoGenesis (Originator), Global Alliance (Licensee)
合成路线:Condensation of 2,4-dinitroimidazole (I) with the silyl-protected (S)-glycidol (II) gave the N-substituted imidazole (III).The free hydroxyl group of (III) was then protected as the tetrahydropyranyl ether (IV) by treatment with dihydropyran and pyridinium tosylate.Desilylation of (IV) by means of tetrabutylammonium fluoride proceeded with concomitant nitro group displacement to afford the pyranoimidazole derivative (V).The tetrahydropyranyl group of (V) was then removed by acidic hydrolysis to provide alcohol (VI).Finally,condensation of (VI) with 4-(trifluoromethoxy)benzyl bromide (VII) under Williamson's ether synthesis conditions provided the title compound.