(R)-6-((1E,3R,4R,6R,7Z,9Z,11E)-3,6-bis((tert-butyldimethylsilyl)oxy)-13-((tert-butyldiphenylsilyl)oxy)-4-hydroxy-3-methyltrideca-1,7,9,11-tetraen-1-yl)-5,6-dihydro-2H-pyran-2-one

diethyl ((3R,5R,6Z,8Z,10E)-5-((tert-butyldimethylsilyl)oxy)-12-((tert-butyldiphenylsilyl)oxy)-2-oxo-3-((triethylsilyl)oxy)dodeca-6,8,10-trien-1-yl)phosphonate

diethyl ((3R,5R,6Z,8Z,10E)-5-((tert-butyldimethylsilyl)oxy)-12-((tert-butyldiphenylsilyl)oxy)-2-hydroxy-3-((triethylsilyl)oxy)dodeca-6,8,10-trien-1-yl)phosphonate

(6R,1'E,3'R,4'R,6'R,7'Z,9'Z,11'E)-6-(6'-tert-butyldimethylsiloxy-13'-tert-butyldiphenylsiloxy-3',4'-dihydroxy-3'-methyl-1',7',9',11'-tridecatetraenyl)-5,6-dihydro-2H-pyran-2-one