(3S,4R)-4-(tert-butyldimethylsilanyloxy)-3-[(R)-1-(tert-butyldimethylsilanyloxy)allyl]hept-6-yn-1-ol

(3R,4S,5R)-3,5-bis(tert-butyldimethylsilyloxy)-4-[2-(mesyloxy)-ethyl]oct-1-en-7-yne

4,6-O-benzylidene-3-deoxy-2-O-(tert-butyldimethylsilyl)-3-C-ethenyl-α-D-altropyranoside

4,6-O-benzylidene-2-O-(tert-butyldimethylsilyl)-3-deoxy-3-C-(2-pivaloyloxyethyl)-α-D-altropyranoside

methyl 4-O-benzoyl-6-bromo-2-O-(tert-butyldimethylsilyl)-3,6-dideoxy-3-C-(2-pivaloyloxyethyl)-α-D-altropyranoside