(9R,10E,12R,13S,15Z)-13-t-butyldiphenylsilyloxy-12-hydroxyoctadeca-10,15-dien-9-olide

(9R,10E,12R,13S,15Z)-12-t-butyldimethylsilyloxy-13-p-methoxybenzyloxyoctadeca-10,15-dien-9-olide

6-(tert-butyl-dimethyl-silanyloxy)-5-(4-methoxy-benzyloxy)-8-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-octa-2,7-dienoic acid methyl ester

6-hydroxy-5-(4-methoxy-benzyloxy)-8-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-octa-2,7-dienoic acid methyl ester

4-{6-[6,11-bis-(tert-butyl-dimethyl-silanyloxy)-10-(4-methoxy-benzyloxy)-13-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-4-methylene-trideca-7,12-dienyl]-5-methoxy-5,6-dihydro-2H-pyran-2-yl}-but-2-ynoic acid