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N-demethylbenzophenanthridine alkaloids
Description:
Alkaloids containing a N-demethylbenzophenanthridine skeleton, which consists of a benzene ring fused to one benzene moiety of the tricyclic phenanthiridine system. These compounds do not carry a methyl group at the N-atom of the phenanthridine moiety, in contrast to other benzophenanthridine alkaloids.