(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

cis-2,5-dimethyl-1-(tert-butyldimethylsiloxy)-2-(acetoxymethyl)-5-<(methoxycarbonyl)methyl>tetrahydropyrrole

1,5-dimethyl-8-acetoxy-8-azabicyclo<3.2.1>octan-3-one O-(mesitylsulfonyl)oxime