(2S)-2,5-dihydroxy-1-tosyloxypentane

(4R,6S)-9-(benzyloxy)-1,4,6-nonanetriol

(4R,6S)-1-methylsulfonyloxy-4,6-O-isopropylidene-9-(benzyloxy)-4,6-nonanediol

(3S,5R)-3-[3-(benzyloxy)propyl]-5-hydroxy-14-methoxy-3,4,5,6,7,8-hexahydro-1H-2-benzoxacyclododecin-1-one

(6S)-1-triethylsilyloxy-4,4-S-S-propylidene-6-hydroxy-9-benzyloxy-nonane