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103. Synthesis and Structure Elucidation of 3,4-Dihydroxy-2-quinolin-2-ylpyrido[3,2,1-jk]carbazol-6-ones
H. V. Dang, N. S. Habib, Th. Kappe, K. Zangger, W. Stadlbauer, J. Heterocyclic Chem., 44, 161-165 (2007).

3,4-Dihydroxy-2-quinolin-2-ylpyrido[3,2,1-jk]carbazol-6-ones 6 were obtained by cyclocondensation of carbazole 1 with malonates 2 in the presence of quinoline. The assignment of the structures of 6 was performed by NMR experiments such as 1D 1H, 13C and DEPT, as well as 2D COSY, HSQC, HMBC and 1,1-ADEQUATE spectra.

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