| abstract |
A carba-sugar amine derivative represented by the following formula (1) or (2) is used as the active ingredient of a β-galactosidase inhibitor or a glycolipid metabolic disorder treating agent. n n n Wherein each of R 1 and R 2 independently represents H, an alkyl group, an acyl group, an aryl group or an aralkyl group, with the proviso that both are not H at the same time, and each of R 3 , R 4 , R 5 and R 6 independently represents a hydroxyl group or hydroxyl group having a substituent. n Also, R 7 represents an alkyl group, and each of R 8 , R 9 , R 10 and R 11 independently represents a hydroxyl group or a hydroxyl group having a substituent. |