4-hydroxy-2-methylcyclopent-2-en-1-one

1-(furan-2-yl)-3-phenylprop-2-yn-1-one

phenyl furan-2-carboxylate

3-(furan-2-yl)-2,5-diphenyl-3,4-dihydropyrazole

methyl (2E,4E)-5-(furan-2-yl)penta-2,4-dienoate