(9S)-dihydroerythronolide A

5,6-O-<1-(4-methoxyphenyl)ethylidene>dihydroerythronolide A

(2S,3R,4S,5R,6R,8R,9S,10S,11R,12R,13R)-1,3,9,13-tetrahydroxy-11,12-isopropylidenedioxy-5,6<1-(4-methoxyphenyl)-ethyilidenedioxy>-2,4,6,8,10,12-hexamethylpentadecane

11,12-O-isopropylidene-5,6-O-<1-(4-methoxyphenyl)ethylidene>dihydroerythronolide A

3-hydroxy-2,4-dimethylpentanedioic acid