phenyl 1-selenylsulfide-D-β-galactopyranoside

methyl 6-S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-5-S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-disulfide-2,3-di-O-(tert-butyldimethylsilyl)-5,6-dithio-β-D-galactofuranoside

bis[methyl 2,3-di-O-(tert-butyldimethylsilyl)-6-S-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-5,6-dithio-β-D-galactofuranos-5-S-yl]disulfide