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. Author manuscript; available in PMC: 2014 Mar 12.
Published in final edited form as: Eur J Med Chem. 2012 Dec 20;60:395–409. doi: 10.1016/j.ejmech.2012.12.027

Fig. 1.

Fig. 1

The structure of sanguinarine (a), chelerythrine (b), 2,3,7,8-tetramethoxy-5-methyl-12-phenylbenzo[c]phenathridin-5-ium chloride (c), and 2,3,7,8-tetramethoxy-5-methyl-1-phenylbenzo[c]phenathridin-5-ium chloride (d).