Three new compounds from Piper montealegreanum Yuncker (Piperaceae)

Three new compounds from Piper montealegreanum Yuncker (Piperaceae)

Three new compounds: two flavonoids [(S)-8-formyl-3',5-dihydroxy-7-methoxy-6methylflavanone (1) and 3'-formyl-3,4',6'-trihydroxy-2'-methoxy-5'-methylchalcone (2)] and one phenylpropanoid [ethyl 3,4-methylenedioxy-5-methoxy-7,8-dihydrocinnamate (3)] were isolated from dr...

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Veröffentlicht in:Journal of the Brazilian Chemical Society 2011-08, Vol.22 (8), p.1610-1615
Hauptverfasser: Alves, Harley da S., Souza, Maria de F. V. de, Chaves, Maria C. de O.
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container_issue 8
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container_title Journal of the Brazilian Chemical Society
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creator Alves, Harley da S.
Souza, Maria de F. V. de
Chaves, Maria C. de O.
description Three new compounds: two flavonoids [(S)-8-formyl-3',5-dihydroxy-7-methoxy-6methylflavanone (1) and 3'-formyl-3,4',6'-trihydroxy-2'-methoxy-5'-methylchalcone (2)] and one phenylpropanoid [ethyl 3,4-methylenedioxy-5-methoxy-7,8-dihydrocinnamate (3)] were isolated from dried branches of Piper montealegreanum. Their structures were established by UV, IR, MS, 1D and 2D (¹H and 13C) NMR spectroscopic techniques, besides interpretation of spectral data (¹H and 13C NMR) of methylated derivatives of 1 and 2 compounds.
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title Three new compounds from Piper montealegreanum Yuncker (Piperaceae)
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