Novel indolopyrrolocarbazole derivative with antitumor activity

摘要

The present invention relates to a novel indolopyrrolocarbazole derivative which is represented by the formula [I]: wherein: A represents O, NH, or CH₂; R₁ represents a single bond, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, etc.; R₂ represents a phenyl group, a naphthyl group, or a five- or six-membered aromatic or aliphatic heterocyclic ring having at least one atom selected from N, S, or O, wherein the phenyl group, naphthyl group, aromatic or aliphatic heterocyclic ring may be substituted; and G represents a hexose group or a pentose group, or a pharmaceutically acceptable salt thereof.