2-(2H-Tetrazol-5-yl)-4H-5-oxa-3,9b-diaza-cyclopenta[a]naphthalene

methyl 8-acetamido-4H-imidazo<2,1-c><1,4>benzoxazine-2-carboxylate

2-piperidinomethyl-4H-imidazo<2,1-c><1,4>benzoxazine hydrochloride

2-cyanomethyl-4H-imidazo<2,1-c><1,4>benzoxazine

methyl 8-etoxalylamino-4H-imidazo<2,1-c><1,4>benzoxazine-2-carboxylate