Resumo

COLUMBA-PALOMARES, María C. et al. Antiproliferative and Anti-inflammatory Acyl Glucosyl Flavones from the Leaves of Bursera copallifera. J. Mex. Chem. Soc [online]. 2018, vol.62, n.4, pp.214-224.  Epub 02-Jul-2020. ISSN 1870-249X.  https://doi.org/10.29356/jmcs.v62i4.624.

Bursera copallifera (DC) Bullock (Burseraceae) is a plant species used in folk medicine for the treatment of inflammation (bronchitis, cough). The dichloromethane-methanol extract (DML) of B. copallifera leaves was found to possess important antiproliferative and anti-inflammatory activities. In order to further correlate these activities with the phytochemical components, the bioactivity-guided fractionation of the DML extract allowed the isolation of an active fraction which was constituted of five compounds characterized as luteolin-3(-O-(3((-O-E-p-coumaroyl)-α-L-rhamnopyranoside (1), luteolin-3(-O-(2((-O-E-p-coumaroyl)-α-L-rhamnopyranoside (2), (-amyrin (3), 3-epilupeol (4) and stigmasterol (5). Among the five isolated constituents, the triterpenes 3 and 4, and the sterol 5 have been already well known for their anti-inflammatory properties. Flavone 2 (Luteolin-3(-O-(2((-O-E-p-coumaroyl)-α-L-rhamnopyranoside) was responsible for the antiproliferative activity, showing in vitro cytotoxic activity against MCF-7 human cancer cell line with IC50 value of 13.9 µM. On the other hand flavone (1) exhibited COX-1 inhibition (IC50 = 93 (M). Flavone 1, together with the triterpenes 3 and 4 were the responsible for inhibiting TPA-induced inflammation by inhibiting COX-1 enzyme. Therefore, these results support the traditional use of the infusion made with the leaves of B. copallifera as an anti-inflammatory agent.

Palavras-chave : Bursera copallifera; Burseraceae; anti-inflammatory activity; antiproliferative activity; acyl glucosyl flavones.

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