1-<<(5S)-<<(1,1,-dimethylethyl)dimethylsilyl>oxy>-(6R)-methyl-1-oxo-8-phenyl-(2E,7E)-octadienyl>oxy>-2,5-pyrrolidinedione

1-<<(5S)-hydroxy-(6R)-methyl-1-oxo-8-phenyl-(2E,7E)-octadienyl>oxy>-2,5-pyrrolidinedione

(5S)-<<(1,1-dimethylethyl)dimethylsilyl>oxy>-(6R)-methyl-8-phenyl-(2E,7E)-octadienoic acid

(5S)-<<(1,1-dimethylethyl)dimethylsilyl>oxy>-(6R)-methyl-8-phenyl-(2E,7E)-octadienoic acid methyl ester

(1S,3E)-5-<(2,5-dioxo-1-pyrrolidinyl)oxy>-1-<(1R,2E)-1-methyl-3-phenyl-2-propenyl>-5-oxo-3-pentenyl-(2S)-<3-<<(1,1-dimethylethoxy)carbonyl>amino>-2,2-dimethyl-1-oxopropoxy>-4-methylpentanoate