| abstract |
This invention relates to pyrrolidine dione derivatives of formula (I), (II) or (III), wherein R, R<1>, R<3>, R<4>, R<5> and X are as defined below. These compounds are aldose reductase inhibitors and are useful in the treatment of diabetes associated complications such as neuropathy, nephropathy, retinopathy and cataracts. The invention also relates to compositions comprising the above compounds and methods for using those compositions in the treatment of the above diabetes associated complications. |