Synthesis of new bis(tetrahydropyrrolo[3,4-b]carbazoles) with a functionalized diaryl spacer

Some new bis(tetrahydropyrrolo[3,4-b]carbazoles) were synthesized by Diels–Alder reactions of in-situ generated indole-2,3-quinodimethanes with a variety of bismaleimides as dienophiles and also by reaction of dianilines with a succinic acid anhydride group incorporated into a biscarbazole. In a special reaction a spermine linker was introduced. The new biscarbazoles represent potential DNA ligands for the development of new antitumor active drugs.

ChemInform Abstract: (4 + 2) Cycloaddition of Indole Derivatives with Bismaleimides: A Route to New Biscarbazoles.

ChemInform Abstract: Synthesis of New Bis(tetrahydropyrrolo[3,4-b]carbazoles) with a Functionalized Diaryl Spacer.

Some new bis(tetrahydropyrrolo[3,4-b]carbazoles) were synthesized by Diels–Alder reactions of in-situ generated indole-2,3-quinodimethanes with a variety of bismaleimides as dienophiles and also by reaction of dianilines with a succinic acid anhydride group incorporated into a biscarbazole. In a special reaction a spermine linker was introduced. The new biscarbazoles represent potential DNA ligands for the development of new antitumor active drugs.

ChemInform Abstract: Advances in Indolo[2,3-a]carbazole Chemistry: Design and Synthesis of Protein Kinase C and Topoisomerase I Inhibitors

Indolo[2,3-a]carbazoles, their pyrrolo[3,4-c]anellated variants and structurally closely related bisindolylmaleimides represent a biologically highly interesting class of natural compounds which are potential anticancer agents. According to the ongoing literature new and efficient synthetic methods yield a great variety of these compounds which have been reported in detail. The biological activities and the inhibitory activities against the target enzymes protein kinase C and topoisomerase I are also discussed including structure activity relationships. A molecular binding model of the protein kinase C inhibitors with the target enzyme at the atomic level is presented and supported by X-ray…