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New pyrone and quinoline alkaloid from Almeidea rubra and their trypanocidal activity

DOI: 10.1590/S0103-50532005000300018

Keywords: almeidea rubra, rutaceae, alkaloids, trypanocidal activity.

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Abstract:

the investigation of the ethyl acetate fraction of methanol extract from leaves of almeidea rubra a. st.-hil. (rutaceae) afforded two new compounds 4-methoxy-6-[2-(methylamino)phenyl]-2h-pyran-2-one and rel-(7r,8r)-8-[(e)-3-hydroxy-3-methyl-1-butenyl]-4,8-dimethoxy-5,6,7,8 -tetrahydrofuro[2,3-b]quinoline-7-yl acetate, along with the known compounds arborinine, n-methyl-1-hydroxy-3-methoxyacridone, skimmianine, kokusagine, isodutaduprine, isoskimmianine, and isokokusagine. their structures were established based on their spectral data, and for the new compounds these data are described herein. additionally, these compounds were assayed on the tripomastigote forms of trypanosoma cruzi showing moderate trypanocidal activity.

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