7-((1S,2S)-2-{(E)-4-[3,5-Dichloro-2-(4-methyl-3,6-dihydro-2H-pyran-3-yl)-phenoxy]-3-oxo-but-1-enyl}-5-oxo-cyclopentyl)-heptanoic acid methyl ester
7-[(1S,5S)-2-Oxo-5-((E)-3-oxo-4-pentafluorophenyloxy-but-1-enyl)-cyclopentyl]-heptanoic acid methyl ester
7-{(1S,2S)-2-[(E)-4-(3-Fluoro-phenoxy)-3-oxo-but-1-enyl]-5-oxo-cyclopentyl}-heptanoic acid methyl ester
7-{(1S,2S)-2-[(E)-4-(3-Chloro-phenoxy)-3-oxo-but-1-enyl]-5-oxo-cyclopentyl}-heptanoic acid methyl ester
methyl 9,15-dioxo-16-phenoxy-13-trans-17,18,19,20-tetranorprostenoate