| abstract |
A phenylphthalimide derivative represented by the following general formula is provided as a phenylphthalimide derivative useful against various cancers including multiple myeloma, n n n n n n n n n n wherein R 1 is a group containing PEG or a hydroxy C 1-5 alkoxy group binding to position 4 or position 5, R 2 is an amino group at position 6, and R 3 and R 4 are each independently a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, or an aryloxy group. |