3-methyl-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazol-4-ol

(3E)-7-oxo-3-hepten-2-one

rac-(3aR,6aR)-3-methyl-3a,5,6,6a-tetrahydrocyclopenta[d]isoxazol-4-one

7-ethylidene-2,3-diazabicyclo[2.2.1]hept-2-ene

丙酮基膦酸二乙酯