tert-butyl (3R,5S)-[6-allyl-2-(4-methoxyphenyl)-[1,3]dioxan-4-yl]acetate

[(2R,4R,6S)-6-((Z)-(R)-7-Benzyloxy-4-hydroxy-2-oxo-6-triethylsilanyloxy-hept-3-enyl)-2-phenyl-[1,3]dioxan-4-yl]-acetic acid tert-butyl ester

[(2R,4R,6S)-6-((Z)-(R)-7-Benzyloxy-4-hydroxy-2-oxo-6-triethylsilanyloxy-hept-3-enyl)-2-(4-methoxy-phenyl)-[1,3]dioxan-4-yl]-acetic acid tert-butyl ester