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Syntheses of 8,9,10,11-Tetrahydro-pyrido[3,2,1-jk]carbazoles, 1,2,3, 11b-Tetrahydro-pyrido[3,2,1-jk]carbazoles and 7a,8,9,10,11,11a-Hexahydro-pyrido[3,2,1-jk]carbazoles
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1  Institut für Chemie, Organic Synthesis Group, Karl-Franzens-University of Graz Heinrichstrasse 28, A-8010 Graz (Austria)

Abstract: Pyrido[3,2,1-jk]carbazol-6-one in its partial hydrogenated form is part of the heterocyclic skeleton of many natural products (e. g. strychnos alkaloids such as strychninolones and brucinolones, picrasidin Q and olivacin alkaloids). It possesses the biological interesting combination of an indole structure and of a 2-quinolone; Comparison with strychnos alkaloids shows that it has already four rings and two oxygen functions in the correct position.
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