Patent ID: 7485755

Claim:
An acid addition salt of a carba-sugar amine derivative of formula (1): wherein R 1 and R 2 each independently is a hydrogen atom, or an alkyl group, an alkenyl group, an alkynyl group, an acyl group, an aryl group or an aralkyl group which may have one or two of the following substituents (I) or (II), or R 1 and R 2 are taken together to be a substituent (III): wherein R 8 to R 12 each independently is an alkyl group, an alkenyl group, an alkynyl group, an acyl group, an aryl group or an aralkyl group; with the proviso that both R 1 and R 2 are not a hydrogen atom at the same time; R 3 , R 4 and R 7 each independently is a hydroxyl group or a hydroxyl group having a substituent; and R 5 and R 6 each independently is a hydrogen atom, a hydroxyl group or a hydroxyl group having a substituent, with the proviso that when one of R 5 and R 6 is a hydrogen atom, the other is a hydroxyl group or a hydroxyl group having a substituent, wherein the hydroxyl group having a substituent at positions R 3 -R 7 is a hydroxyl group where the hydrogen of the hydroxyl group is replaced with a substituent selected from the group consisting of an aralkyl group, a silyl group, an alkanoyl group, an aroyl group, an alkoxyalkyl group, and a aralkyloxyalkyl group or wherein two hydroxyl groups at positions R 3 -R 7 together form a substituent selected from the group consisting of an alkylidene group, an isopropylidene group, and an aralkylidene group, wherein said salt of a carba-sugar amine derivative is a hydrochloride or sulfate salt.