Acetic acid (3aR,5S,6R,6aR)-5-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-ylmethyl ester

(7E,9E)-(2S,3aR,5R,6S,11R,12R,16R,17S,17aS)-12-Ethyl-6,16-dihydroxy-2-methoxy-5,9,17-trimethyl-11-trityloxymethyl-2,3,3a,4,5,6,11,12,15,16,17,17a-dodecahydro-1,13-dioxa-cyclopentacyclohexadecen-14-one

(E)-(4R,5R,6R)-4,6-Dihydroxy-3-methyl-5-trityloxymethyl-oct-2-enoic acid methyl ester

Acetic acid (3aR,5S,6R,6aR)-2,2-dimethyl-5-(toluene-4-sulfonyloxymethyl)-tetrahydro-furo[2,3-d][1,3]dioxol-6-ylmethyl ester

((3aR,5R,6R,6aR)-5-Ethyl-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl)-methanol

(E)-(4R,5R)-5-Hydroxy-2-methyl-4-trityloxymethyl-hept-2-enal

(3R,4S)-3-Hydroxy-4-[(2S,3R)-3-((4E,6E)-(2S,8R,9S)-9-hydroxy-2,6-dimethyl-3-oxo-8-trityloxymethyl-undeca-4,6-dienyl)-5-methoxy-tetrahydro-furan-2-yl]-pentanoic acid methyl ester

(3R,4S,5R)-5-Ethyl-3-hydroxy-4-hydroxymethyl-dihydro-furan-2-one

(3R,4S)-4-[(2S,3R,5S)-3-((4E,6E)-(2R,3S,8R,9R)-3,9-Dihydroxy-2,6-dimethyl-8-trityloxymethyl-undeca-4,6-dienyl)-5-methoxy-tetrahydro-furan-2-yl]-3-hydroxy-pentanethioic acid S-pyridin-2-yl ester

(3R,4S,5R)-5-Ethyl-3-hydroxy-4-trityloxymethyl-dihydro-furan-2-one