A carbamate-containing galacto-pyranosyl compound represented by the structural formula: wherein: - X is O, - R is selected from the group consisting of C 3-10 cycloalkyl, aryl-C 1-4 alkyl, heterocyclyl-C 1-4 alkyl, cycloalkyl-C 1-4 alkyl and heterocyclyl, wherein R is optionally substituted with one or more R 9, or R is C 1-8 alkyl substituted with one or more R 9; - R 2, R 3, R 4, R 6 and R 7 are independently selected from the group consisting of hydroxyl and protected hydroxyl groups; - R 5 is selected from the group consisting C 6-30 alkyl and arylalkyl; - R 8 is C 6-30 alkyl; and - each R 9 is independently selected from the group consisting of halogen, hydroxy, trifluoromethyl, trifluoromethoxy, C 1-8 alkoxy, C 1-6 alkyl, cyano, methylthio, phenyl, phenoxy, chloromethyl, dichloromethyl, chlorodifluoromethyl, acetyl, nitro benzyl, heterocyclyl and di-C 1-4 alkyl-amino, or a thiocarbamate-containing galacto-pyranosyl compound represented by the structural formula: wherein: - X is S, - R is selected from the group consisting of C 1-8 alkyl, C 3-10 cycloalkyl, aryl-C 1-4 alkyl, heterocyclyl-C 1-4 alkyl, cycloalkyl-C 1-4 alkyl, aryl and heterocyclyl, wherein R is optionally substituted with one or more R 9; - R 2, R 3, R 4, R 6 and R 7 are independently selected from the group consisting of hydroxyl and protected hydroxyl groups; - R 5 is selected from the group consisting C 6-30 alkyl and arylalkyl; - R 8 is C 6-30 alkyl; and - each R 9 is independently selected from the group consisting of halogen, hydroxy, trifluoromethyl, trifluoromethoxy, C 1-8 alkoxy, C 1-6 alkyl, cyano, methylthio, phenyl, phenoxy, chloromethyl, dichloromethyl, chlorodifluoromethyl, acetyl, nitro benzyl, heterocyclyl and di-C 1-4 alkyl-amino, or a pharmaceutically acceptable salt thereof. - X is O, - R is selected from the group consisting of C 3-10 cycloalkyl, aryl-C 1-4 alkyl, heterocyclyl-C 1-4 alkyl, cycloalkyl-C 1-4 alkyl and heterocyclyl, wherein R is optionally substituted with one or more R 9, or R is C 1-8 alkyl substituted with one or more R 9; - R 2, R 3, R 4, R 6 and R 7 are independently selected from the group consisting of hydroxyl and protected hydroxyl groups; - R 5 is selected from the group consisting C 6-30 alkyl and arylalkyl; - R 8 is C 6-30 alkyl; and - each R 9 is independently selected from the group consisting of halogen, hydroxy, trifluoromethyl, trifluoromethoxy, C 1-8 alkoxy, C 1-6 alkyl, cyano, methylthio, phenyl, phenoxy, chloromethyl, dichloromethyl, chlorodifluoromethyl, acetyl, nitro benzyl, heterocyclyl and di-C 1-4 alkyl-amino, - X is S, - R is selected from the group consisting of C 1-8 alkyl, C 3-10 cycloalkyl, aryl-C 1-4 alkyl, heterocyclyl-C 1-4 alkyl, cycloalkyl-C 1-4 alkyl, aryl and heterocyclyl, wherein R is optionally substituted with one or more R 9; - R 2, R 3, R 4, R 6 and R 7 are independently selected from the group consisting of hydroxyl and protected hydroxyl groups; - R 5 is selected from the group consisting C 6-30 alkyl and arylalkyl; - R 8 is C 6-30 alkyl; and - each R 9 is independently selected from the group consisting of halogen, hydroxy, trifluoromethyl, trifluoromethoxy, C 1-8 alkoxy, C 1-6 alkyl, cyano, methylthio, phenyl, phenoxy, chloromethyl, dichloromethyl, chlorodifluoromethyl, acetyl, nitro benzyl, heterocyclyl and di-C 1-4 alkyl-amino,