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handle: 10261/169089
[ES] Se presentan los resultados del estudio fitoquímico y farmacológico de la planta Croton micans Sw (Euforbiaceae). La investigación química de los extractos orgánicos obtenidos de flores, hojas y tallos de Croton micans, condujo al aislamiento e identificación de 18 compuestos, siete de los cuales han sido reportados por primera vez en la literatura de productos naturales: dos diterpenos de tipo 3,4-seco-entkaureno, cinco dímeros con estructuras de 3,4-seco-entkaurenos, tres kauranos, tres esteroides triterpénicos, dos sesquiterpenos, un monoterpeno, un flavonoide y un ácido graso. Se identificó igualmente la composición del aceite esencial obtenido de flores y hojas, encontrándose como compuesto mayoritario el acetato de fenchilo. La evaluación farmacológica permitió determinar los efectos tóxicos del extracto acuoso sobre animales de experimentación y con ellos se obtuvo la dosis tóxica cincuenta (DT50). Igualmente, se determinó su acción sobre la musculatura lisa del íleon de cobayo, en la respuesta cardiovascular, su actividad analgésica y antihistamínica así como la acción citotóxica de metabolitos aislados sobre células tumorales humanas.
[EN] This review presents the results the of a phytochemical and pharmacological study of the plant Croton micans Sw. Chemical investigation of organic extracts obtained from Croton micans flowers, leaves and stems, led to isolation and identification of 18 compounds, seven of them reported for the first time in natural products literature: two 3,4-secoent- kaurene diterpenes, five 3,4-seco-ent-kaurene dimers, three ent-kaurenes, three steroids with triterpene skeletons, two sesquiterpenes, a monoterpene, a long chain acid and a flavonoid. Composition of essential oil obtained from flowers and leaves was also identified, fenchil acetate being the major compound. Pharmacological evaluation allowed determining toxic effects of Croton micans aqueous extract on experimental animals and the TD50, were determined. In addition, the effects on guinea pig ileal smooth muscle, cardiovascular response, and analgesic and antihistamine activity were also determined. Cytotoxic activity of organic extracts and isolated metabolites on human tumor cells are also shown.
agradecemos el apoyo financiero al Consejo de Desarrollo Científico y Humanístico de la Universidad Central de Venezuela a través del Proyecto PG-06- 7342-2008.
Peer reviewed
Croton micans, Fitoquímica, Farmacología, Metabolitos secundarios, Citotoxicidad
Croton micans, Fitoquímica, Farmacología, Metabolitos secundarios, Citotoxicidad
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