3-acetoxy-2-ethoxy-3,5,5-trimethyl-1,2-oxaphospholane

4-hydroxy-4-pyridin-2-ylbutan-2-one

5,7,7-trimethyl-3-propyl-2,6-dihydro-1,3,4-oxadiazepine

N-(1,1-二甲基-3-氧代丁基)乙酰胺

4-methyl-4-trimethylsilyloxypentan-2-one