ethyl 2,3,4-tri-O-benzyl-6-O-chloroacetyl-1-thio-α-D-galactopyranoside

ethyl 2,3,4-tri-O-benzyl-6-O-(6'-trityloxyhexyl)-1-thio-α-D-galactopyranoside

ethyl 2,3,4-tri-O-benzyl-6-O-(7'-trityloxyheptyl)-1-thio-α-D-galactopyranoside

ethyl 2,3,4-tri-O-benzyl-6-O-(8'-trityloxyoctyl)-1-thio-α-D-galactopyranoside

(2R,3R,4S,5S,6R)-3,4,5-Tris-benzyloxy-2-ethylsulfanyl-6-{2-[2-(2-trityloxy-ethoxy)-ethoxy]-ethoxymethyl}-tetrahydro-pyran