An Easy Approach to Prepare Naphtho [⁻2, 3-b] Furan-4, 9-diones

V. F. Ferreira Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Centro de Ciěncias da Saúde, Bloco H, 21941, Rio de Janeiro, R. J., Brazil

A. V. Pinto Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Centro de Ciěncias da Saúde, Bloco H, 21941, Rio de Janeiro, R. J., Brazil

M. C. F. R. Pinto Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Centro de Ciěncias da Saúde, Bloco H, 21941, Rio de Janeiro, R. J., Brazil

M. C. Da Cruz Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Centro de Ciěncias da Saúde, Bloco H, 21941, Rio de Janeiro, R. J., Brazil

A. Clarino Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Centro de Ciěncias da Saúde, Bloco H, 21941, Rio de Janeiro, R. J., Brazil

Abstract

From the ethanol extract of the stem bark of Tabebuia cassinoide (Lam.) (Bignoniaceae), Rao and Kingston isolated two new quinones, 5 and 6, that showed activity in KB cell culture assay. The synthesis of these quinones were realized by two routes that would be amenable to relatively large-scale work.

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An Easy Approach to Prepare Naphtho [−2, 3-b] Furan-4, 9-diones

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An Easy Approach to Prepare Naphtho [⁻2, 3-b] Furan-4, 9-diones