2,2-Dimethyl-propionic acid (2R,3S,5R,6S)-5-benzyloxy-2-(2,2-dimethyl-propionyloxymethyl)-6-hydroxy-tetrahydro-pyran-3-yl ester

(2R,3S,5R,6S)-6-Allyl-5-benzyloxy-2-((Z)-2-phenylsulfanyl-2-triethylsilanyl-vinyl)-tetrahydro-pyran-3-ol

(2R,3S,5R,6S)-6-Allyl-2-((Z)-2-benzenesulfonyl-2-triethylsilanyl-vinyl)-5-benzyloxy-tetrahydro-pyran-3-ol

Acetic acid (2R,3S,5R,6S)-6-allyl-5-benzyloxy-2-((Z)-2-phenylsulfanyl-2-triethylsilanyl-vinyl)-tetrahydro-pyran-3-yl ester

1-((2R,3S,4S,4aR,4'S,5aS,7R,8S,9aR,10S,11S,11aS)-4',7-bis(benzyloxy)-11-hydroxy-3,4,10-trimethyldodecahydro-3H,3'H-spiro[dipyrano[3,2-b:2',3'-f]oxepine-2,2'-furan]-8-yl)propan-2-one