4-([2-((2R)-2-((1E,3S)-3-hydroxy-4-[3-(1H-indol-5-yl)phenyl]but-1-enyl)-5-oxopyrrolidin-1-yl)ethyl]sulfanyl)butanoic acid

4-([2-((2R)-2-((1E,3S)-3-hydroxy-4-[3-(pyridin-2-ylmethoxy)phenyl]but-1-enyl)-5-oxopyrrolidin-1-yl)ethyl]sulfanyl)butanoic acid

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

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

butyl 4-[(2-{(2R)-2-[(1E,3S)-3-hydroxy-4-(5-methyl-2-furyl)-1-buten-1-yl]-5-oxo-1-pyrrolidinyl}ethyl)thio]butanoate