2-pent-4-enoxyoxane

1-(3,4-dihydro-2H-pyran-6-yl)hexa-2,4-dien-1-one

1-(3,4-dihydro-2H-pyran-6-yl)-2-methylidenebutan-1-one

1-(3,4-dihydro-2H-pyran-6-yl)-3-methyl-2-methylidenebutan-1-one

1-(3,4-dihydro-2H-pyran-6-yl)-3-phenylprop-2-en-1-one