5-benzyl-2-(2-benzyloxy-phenyl)-5H-oxazolo[4,5-b]phenoxazine
2-[5-(1,5-diphenyl-4,5-dihydro-1H-pyrazol-3-yl)-5H-oxazolo[4,5-b]phenoxazin-2-yl]-phenol
2-[5-(5-phenyl-4,5-dihydro-isoxazol-3-yl)-5H-oxazolo[4,5-b]phenoxazin-2-yl]-phenol
1-acetyl-3-[2-(2-hydroxy-phenyl)-oxazolo[4,5-b]phenoxazin-5-yl]-5-phenyl-4,5-dihydro-1H-pyrazole
2-(2-hydroxy-phenyl)-5-[(2-nitro-phenoxy)-acetyl]-5H-oxazolo[4,5-b]phenoxazine