(R)-8-((1R,3S,5R,6R,7S)-6-Acetoxy-7-nitro-1-pentyl-2,9-dioxa-bicyclo[3.3.1]non-3-yl)-8-methoxy-oct-5-ynoic acid methyl ester

methyl 15-hydroxy-8(R)-methoxy-11(R)-p-nitrobenzoyloxy-9(S),12(R)-oxy-eicosa-13-ynoate

methyl 12-bromo-8(R)-methoxy-11(R)-p-nitrobenzoyloxy-9(S),12-oxy-dodecanoate

methyl 11(R),12-di-p-benzoyloxy-8(R)-methoxy-9(S),12-oxy-dodecanoate

methyl 12-cyano-8(R)-methoxy-11(R)-p-nitrobenzoyloxy-9(S),12-oxy-dodecanoate