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Graczol-Fordos E.,Servier Research Institute of Medicinal Chemisrty | Novak T.,Servier Research Institute of Medicinal Chemisrty | Blasko G.,Servier Research Institute of Medicinal Chemisrty | Fejes I.,Servier Research Institute of Medicinal Chemisrty | And 2 more authors.
Heterocycles | Year: 2013

Several new chromeno[2,3-b]indole tetracycles were synthesized by the reaction of 2'-hydroxyacetophenones or 2'-hydroxypropiophenones and salicylaldehyde derivates. Under the harsh reaction conditions, the initially formed Knoevenagel adducts lost water, giving rise to the formation of ring closed tetracyclic products. © The Japan Institute of Heterocyclic Chemistry. Source

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