(R)-6-[(E)-(3R,4R,6R)-6-(tert-Butyl-dimethyl-silanyloxy)-4-(4-methoxy-benzyloxy)-3-methyl-3-triethylsilanyloxy-8-trimethylsilanyl-oct-1-en-7-ynyl]-5,6-dihydro-pyran-2-one

(R)-6-((E)-(3R,4R)-4-Hydroxy-3-methyl-6-oxo-3-triethylsilanyloxy-8-trimethylsilanyl-oct-1-en-7-ynyl)-5,6-dihydro-pyran-2-one

(R)-6-[(E)-(3R,4R)-4-(4-Methoxy-benzyloxy)-3-methyl-6-oxo-3-triethylsilanyloxy-8-trimethylsilanyl-oct-1-en-7-ynyl]-5,6-dihydro-pyran-2-one