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Paper | Regular issue | Vol 38, No. 8, 1994, pp.1797-1804
Published online, 1st January, 1970
DOI: 10.3987/COM-94-6696
Synthesis of Naphtho[2,3-b]pyranoquinones and Its Aza-Analogues from a Useful Benzopyranoquinone Intermediate

Ricardo Tapia,* Jaime A. Valderrama, and Carmina Quintanar

*Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Correo 22, Santiago, Chile


The synthesis of racemic pyranonaphthoquinone (2), a new cytotoxic agent, and its aza-analogues (11) and (12) employing Diels-Alder cycloaddition reactions is described.