Methyl-9-(β-n-butoxycyclopropyl)-9-oxononanoat

ethyl 3-bromo-1-(7-ethoxy-7-oxoheptyl)-2-oxocyclopentane-1-carboxylate

1-(三甲基硅氧基)环戊烯

methyl 7-chloro-7-(phenylthio)heptanoate

Methyl 7-(2-oxocyclopentyl)-7-phenylthioheptanoate