4-乙酰基-4,5-二氢-2(3H)-呋喃酮

5-(hydroxymethyl)-5-methyloxolan-2-one

4-异氰酰基-2-丁酮

3-溴-5-甲基-5H-呋喃-2-酮

[dibutyl(ethyl)silyl] 4-oxopentanoate