(5Z)-7-{(1S,4S,5R)-5-[(1E,3S)-3-(tert-butyl-dimethylsilanyloxy)-oct-1-enyl]-4-hydroxy-cyclopent-2-enyl}-hept-5-enoic acid

(5Z)-7-{(1R,2R,5S)-2-[(1E,3S)-3-(tert-butyl-dimethylsilanyloxy)-oct-1-enyl]-5-hydroxy-cyclopent-3-enyl}-hept-5-enoic acid

(5Z)-7-{(1R,2R,5S)-2-[(1E,3S)-3-(tert-butyl-dimethylsilanyloxy)-oct-1-enyl]-5-hydroxy-cyclopent-3-enyl}-hept-5-enoic acid methyl ester

(5Z)-7-{(1R,2S,5R)-2-[(1E,3S)-3-(tert-butyl-dimethylsilanyloxy)-oct-1-enyl]-5-(2-nitrophenylselanyl)-cyclopent-3-enyl}-hept-5-enoic acid methyl ester