Toluene-4-sulfonic acid (4aR,5aS,6aR,8S,9S,10aS,11aR,13aS)-9-hydroxy-2,2,10a-trimethyl-8-(2-triisopropylsilanyloxy-ethyl)-dodecahydro-1,3,5,7,11-pentaoxa-benzo[4,5]cyclohepta[1,2-b]naphthalen-9-ylmethyl ester

(2R,4aR,6S,7R,8aS)-7-Benzyloxy-6-(2-benzyloxy-ethyl)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine

[(2S,3S,5R,6S)-5-Benzyloxy-6-(2-benzyloxy-ethyl)-2-iodomethyl-tetrahydro-pyran-3-yloxy]-tert-butyl-dimethyl-silane

(4aR,5aS,6aR,8S,9R,10aS,11aR,13aS)-9-Benzyloxy-8-(2-benzyloxy-ethyl)-2,2,10a-trimethyl-dodecahydro-1,3,5,7,11-pentaoxa-benzo[4,5]cyclohepta[1,2-b]naphthalene

Acetic acid (2S,3R,4aR,5aR,8S,9R,10aS,11aR)-9-acetoxymethyl-3-benzyloxy-2-(2-benzyloxy-ethyl)-4a-ethanesulfonyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-8-yl ester