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A derivative of Brevianamide F,(3 S,8 a R)-3-((1-allyl-1 H-3-indolyl)methyl)-hexahy-dropyrrolo[1,2-a]pyrazine-1,4-dione, was synthesized and characterized by 1 H NMR, 13 C NMR and confirmed by X-ray crystal structure analysis. This compound crystallizes i