3-tert-butoxycarbonylamino-2-hydroxy-3-phenyl-propionic acid 10,14,20-trihydroxy-7,13,15,17,19,21-hexamethyl-22-(1-methyl-penta-2,4-dienyl)-2-oxo-oxacyclodocosa-3,5,11,16-tetraen-8-yl ester

3-tert-butoxycarbonylamino-2-hydroxy-3-phenyl-propionic acid 8,14,20-trihydroxy-7,13,15,17,19,21-hexamethyl-22-(1-methyl-penta-2,4-dienyl)-2-oxo-oxacyclodocosa-3,5,11,16-tetraen-10-yl ester

3-benzoylamino-3-phenyl-2-triethylsilanyloxy-propionic acid 14,20-bis(tert-butyl-dimethyl-silanyloxy)-10-hydroxy-7,13,15,17,19,21-hexamethyl-22-(1-methyl-penta-2,4-dienyl)-2-oxo-oxacyclodocosa-3,5,11,16-tetraen-8-yl ester

3-benzoylamino-3-phenyl-2-triethylsilanyloxy-propionic acid 14,20-bis(tert-butyl-dimethyl-silanyloxy)-8-hydroxy-7,13,15,17,19,21-hexamethyl-22-(1-methyl-penta-2,4-dienyl)-2-oxo-oxacyclodocosa-3,5,11,16-tetraen-10-yl ester

3-tert-butoxycarbonylamino-3-phenyl-2-triethylsilanyloxy-propionic acid 14,20-bis(tert-butyl-dimethyl-silanyloxy)-8-hydroxy-7,13,15,17,19,21-hexamethyl-22-(1-methyl-penta-2,4-dienyl)-2-oxo-oxacyclodocosa-3,5,11,16-tetraen-10-yl ester