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Recebido em 17/6/12; aceito em 13/11/12; publicado na web em 20/2/13 CHEMICAL CONSTITUENTS OF Vernonia scorpioides (Lam) Pers. (Asteraceae). The chemical investigation of hexane and ethanol extracts from the aerial parts of Vernonia scorpioides resulted in the isolation and characterization of a new polyacetylene lactone, rel-4-dihydro-4β-hydroxy-5a-octa-2,4,6-triynyl-furan-2-(5H)-one, along with the new ethyl 3,4-dihydroxy-6,8,10-triynyldodecanoate, and seven known compounds: taraxasteryldoi:10.1590/s0100-40422013000400010 fatcat:76i2736zefb4bl6gyhxcl5g2ji