S-tert-Butyl (2R,3S)-2-(benzyloxy)-3-hydroxy-6-methyl-4-heptynethioate

S-tert-Butyl (2S,3R)-2-(benzyloxy)-3-hydroxy-6-methyl-4-heptynethioate

((2R,3R)-2,3-Bis-benzyloxy-6-methyl-hept-4-ynyloxy)-tert-butyl-dimethyl-silane

S-tert-Butyl (2R,3S,4R,5R)-4-(benzyloxy)-5-<(tert-butyldimethylsilyl)oxy>-3-hydroxy-2-methoxy-8-methyl-6-nonynethioate