(9S)-dihydroerythronolide A

(2R,4S,5S,6R)-6-[(1S,3R)-3-[(2R,4S,5S,6R)-6-[(1S,2R)-1-benzyloxy-2-hydroxy-1-methylbutyl]-2-(p-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl]-1-benzyloxy-1-methylbutyl]-4-[(1R)-1-carboxyeth-1-yl]-2-(p-methoxyphenyl)-5-methyl-1,3-dioxane

(2R,4S,5S,6R)-6-[(1S,3R)-3-[(2R,4S,5S,6R)-6-[(1S,2R)-1-benzyloxy-2-(tert-butyldimethylsiloxy)-1-methylbutyl]-2-(p-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl]-1-benzyloxy-1-methylbutyl]-4-[(1R)-1-carboxyeth-1-yl]-2-(p-methoxyphenyl)-5-methyl-1,3-dioxane

4-benzyl-3-{2-[6-{1-benzyloxy-3-[6-[1-benzyloxy-2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-butyl]-2-(4-methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-1-methyl-butyl}-2-(4-methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-propionyl}-oxazolidin-2-one