Parvatkar, P.T.; Tilve, S.G.
(Bioactive Heterocycles: Synthesis and Biological Evaluation, Ed. by: K.L. Ameta, R.P. Pawar and A.J. Domb. Biochemistry Research Trends. Nova Science Publishers, New York. 2012; 217-233.)
Tetracyclic heteroaromatic compounds with linear or angularly fused indoloquinoline ring systems constitute an important structural moiety in natural products. The indoloquinoline alkaloids cryptolepine, isocryptolepine ...