methyl 8R-tert-butyldiphenylsilyloxy-11R,15R-dihydroxy-9S,12S-oxyeicosa-5Z,13E-dienoate

1-nitro-octan-3-one ethylene ketal

(Z)-(8R,9R,11R)-8-(tert-Butyl-diphenyl-silanyloxy)-12,12-bis-ethylsulfanyl-9,11-dihydroxy-dodec-5-enoic acid methyl ester

methyl 8R-tert-butyldiphenylsilyloxy-11R-hydroxy-13-nitro-15-oxo-9S,12S-oxyeicosa-5Z-enoate