G. Zagotto et al., Synthesis of 2H,9H-naphtho[2,3-b : 7,6-b ']dipyran-2,9-diones as potentialDNA-reactive agents, FARMACO, 53(10-11), 1998, pp. 675-679
New 2H,9H-naphtho[2,3-b:7,6-b']dipyran-2,9-diones have been synthesized. Th
e tetracyclic derivatives were obtained by two different synthetic pathways
, both having, as a common intermediate, the 3,6-dihydroxynaphthalene-2,7-d
icarboxaldehyde. (C) 1998 Elsevier Science S.A. All rights reserved.