4,9,12-trioxadispiro[4.2.4⁸.2⁵]tetradecane

(4-氧代环己基)-乙酸甲酯

8-(4-methoxyphenyl)-1,4-dioxaspiro[4.5]dec-7-ene

1-羟基-4-氧代环己基乙酸乙酯

7-(2-bromophenyl)-1,4-dioxaspiro[4.5]decan-8-one