| abstract |
A thiazolidine derivatives of the formula: <IMAGE> wherein R is a phenyl group having 2 nuclear substituent groups selected from the group consisting of a lower alkyl having 1 to 6 carbon atoms, a lower alkoxy having 1 to 7 carbon atoms, hydroxyl and a carboxylic acyloxy having 1 to 4 carbon atoms, or a phenyl group having a methylenedioxy group in adjacent positions on its ring; R1 is H or an alkyl having 1 to 6 carbon atoms, or a physiologically acceptable salt thereof is a novel compound having the activity to control certain chronic symptoms due to diabetes, such as diabetic cataract, diabetic neuropathy and diabetic retinosis. |