(R)-1-[(2S,5R)-5-((2S,5S,7R)-2,7-Dimethyl-1,6-dioxa-spiro[4.5]dec-2-yl)-2-methyl-tetrahydro-furan-2-yl]-ethane-1,2-diol

(R)-7-(1-Ethoxy-ethoxy)-1-{(2R,3S)-3-[2-((2S,3R)-3-hydroxymethyl-2-methyl-oxiranyl)-ethyl]-2-methyl-oxiranyl}-octan-3-one

(R)-7-(tert-Butyl-dimethyl-silanyloxy)-1-{(2R,3S)-3-[2-((2S,3R)-3-hydroxymethyl-2-methyl-oxiranyl)-ethyl]-2-methyl-oxiranyl}-octan-3-one