Provided is a fused ring diimide derivative having a chemical structure of formula I. Further provided is a preparation method therefor. The fused ring diimide derivative has excellent anti-tumor activity, and the anti-proliferative activity on various cancer cells is significantly better than that of similar compounds.

##STR00001##

The present invention provides a diarylamine-based compound represented by General Formula (1):

##STR00001##

(where A.sup.1 and A.sup.2 each independently represent a C.sub.6 to C.sub.18 arylene group which may have a substituent, and A.sup.3 and A.sup.4 each independently represent an organic group having a cyclic imide structure which may have a substituent).

The present invention provides a diarylamine-based compound represented by General Formula (1):

##STR00001##

(where A.sup.1 and A.sup.2 each independently represent a C.sub.6 to C.sub.18 arylene group which may have a substituent, and A.sup.3 and A.sup.4 each independently represent an organic group having a cyclic imide structure which may have a substituent).

Provided herein are isoindole derivatives, which is enriched with isotopes such as deuterium. Pharmaceutical compositions comprising the isotopes-enriched compounds, and methods of using such compounds are also provided.

Provided herein are isoindole derivatives, which is enriched with isotopes such as deuterium. Pharmaceutical compositions comprising the isotopes-enriched compounds, and methods of using such compounds are also provided.