cis-2,5-dimethyl-1-acetoxy-2-formyl-5-(2-oxohexyl)tetrahydropyrrole

1,5-dimethyl-8-acetoxy-8-azabicyclo<3.2.1>octan-3-one

1-(2,5-Dimethyl-3,4-dihydro-2H-pyrrol-2-yl)-hexan-2-one

(2R,5S)-1-Acetoxy-2,5-dimethyl-5-(2-oxo-hexyl)-pyrrolidine-2-carboxylic acid

cis-2,5-dimethyl-1-acetoxy-2-carbomethoxy-5-(2-oxohexyl)tetrahydropyrrole