Transformações químicas de lignanas isoladas de Virola sebifera em análogos de podofilotoxina

  • Fernandes J
  • Vieira P
  • Fraga R
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Abstract

0 fracionamento do extrato clorofórmico das folhas de Virola sebifera levou ao isolamento da lignanas (2R, 3R) -2, 3-Di- (3', 4'-dimetoxibenzil) -butirolactona (1), (2R, 3R) -2, 3-Di (3'', 4'' -dimetoxibenzil) -butirolactona(3). Tentativa de transformações da lignana(1) em ánalogo de Podofilotoxina (4) foram realizadas com resultados parciais negativos. Um dos produtos obtidos nas transformações propostas foi (2R, 3R) -2, 3Di- (5'-bromo-3', 4' -Dimetoxibenzil) -butirolactona (5).The chloroform extract of leaves of Virola sebifera was fractioned leading to isolation of lignans (2R, 3R) -2, 3-Di- (3', 4' -dimethoxybenzyl) -butirolactone (1) (2R, 3R) -2, 3- Di- (3', 4' -methylenedioxybenzyl) -butyrolactone (2), (2R, 3R) -3- (3'', 4'' -dimethoxybenzyl) -2- (3', 4' -methylenedioxybenzyl) -butyrolactone (3). Transformation of these lignans intopodophyllotoxin analogs (4) was tested experimentally with negative results. In the proposed transformation (2R, 3R) -2, 3-Di- (5-bromo-3', 4' -dimethoxybenzyl) -butyrolactone (5) was obtained.

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APA

Fernandes, J. B., Vieira, P. C., & Fraga, R. L. (1988). Transformações químicas de lignanas isoladas de Virola sebifera em análogos de podofilotoxina. Acta Amazonica, 18(suppl 1-2), 439–442. https://doi.org/10.1590/1809-43921988185442

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