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■ Synthesis of Vinca Alkaloids and Related Compounds. XXVIII. Novel Type Rearrangement of an Indole[2,3-a]quinolizidine into Indolizino[8,7-b]indole

Zsuzsanna Kardos-Balogh, Ferenc Sóti, Mária Incze, Mária Kajtár-Peredy, and Csaba Szántay*

*Central Research Institute for Chemistry, Hungarian Academy of Sciences, H-1025 Budapest, Pusztaszeri ut 59-67, P.O.Box 17, Hungary

Abstract

Internal acylation of indolo[2, 3-a]quinolizidine derivatives may lead either to 3-acylindolenines or to indolizino[8,7-b]indole derivatives depending on the structural properties of the starting materials.