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Paper | Special issue | Vol 93, No. 2, 2016, pp.673-684
Published online, 23rd October, 2015
DOI: 10.3987/COM-15-S(T)56
Synthesis of 2,3,9,10-Tetraoxygenated Benzo[c]phenanthridine Derivatives via Palladium-Mediated Aryl-Aryl Coupling Reaction

Hitoshi Abe,* Naoko Kobayashi, Yutaka Kadoshima, Yasuo Takeuchi, Takashi Harayama, and Yoshikazu Horino

*Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan

Abstract

Two 2,3,9,10-tetraoxygenated benzo[c]phenanthridine alkaloids, 1 and 2, originally reported as zanthoxyline and broussonpapyrine, respectively, were synthesized using the Pd-mediated intramolecular aryl-aryl coupling reaction as the key step.