3a,4-dihydro-9b(1H)-(2-oxopropyl)-1-phenyl-3H-<1>benzopyrano<4,3-c>isoxazole

4-<2-(2-propenyloxy)phenyl>but-3-yn-2-one

3a,4-dihydro-1-methyl-9b-(1H)-methyl-3H-<1>-benzopyrano<4,3-c>isoxazole

C,N-dimethyl-C-(2-(2-propenyloxy)phenylethynyl)nitrone

methyl 3a,4-dihydro-1-phenyl-3H-<1>benzopyrano<4,3-c>isoxazole-9b-(1H)-acetate