3-isoxazolin-5-one
[5-(4-Bromo-phenyl)-4,6-dioxo-4,5,6,6a-tetrahydro-3aH-pyrrolo[3,4-d]isoxazol-3-yl]-acetic acid ethyl ester
[5-(4-Chloro-phenyl)-4,6-dioxo-4,5,6,6a-tetrahydro-3aH-pyrrolo[3,4-d]isoxazol-3-yl]-acetic acid ethyl ester
(4,6-Dioxo-5-phenyl-4,5,6,6a-tetrahydro-3aH-pyrrolo[3,4-d]isoxazol-3-yl)-acetic acid ethyl ester
2-benzyl-2,3-dihydro-5-isoxazolone