4-{1-[2-((2R)-2-{(1E,3S)-3-hydroxy-4-[3-(methoxymethyl)phenyl]but-1-enyl}-5-oxopyrrolidin-1-yl)ethyl]cyclopropyl}butanoic acid

methyl 4-(1-{2-[(2R)-2-{(1E,3S)-3-(tert-butyldimethylsilyloxy)-4-[3-(methoxymethyl)phenyl]-1-buten-1-yl}-5-oxo-1-pyrrolidinyl]ethyl}cyclopropyl)butanoate

methyl 4-(1-(2-hydroxyethyl)cyclopropyl)butanoate

tert-butyl (2R)-2-{(1E,3S)-3-hydroxy-4-[3-(methoxymethyl)phenyl]-1-buten-1-yl}-5-oxo-1-pyrrolidinecarboxylate

methyl 5,5-dimethylene-7-iodo-heptanoate

(5R)-5-{(1E,3S)-3-(tert-butyldimethylsilyloxy)-4-[3-(methoxymethyl)phenyl]-1-buten-1-yl}-2-pyrrolidinone

methyl 7-hydroxy-5-methyleneheptanoate

methyl 7-acetoxy-5-methyleneheptanoate

tert-butyl (2R)-2-{(1E)-4-[3-(methoxymethyl)phenyl]-3-oxo-1-buten-1-yl}-5-oxo-1-pyrrolidinecarboxylate