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VCD to determine absolute configuration of natural product molecules: secolignans from Peperomia blanda.
The absolute configuration and solution-state conformers of three peperomin-type secolignans isolated from Peperomia blanda (Piperaceae) are unambiguously determined by using vibrational circularExpand
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Friedelin Synthase from Maytenus ilicifolia: Leucine 482 Plays an Essential Role in the Production of the Most Rearranged Pentacyclic Triterpene
Among the biologically active triterpenes, friedelin has the most-rearranged structure produced by the oxidosqualene cyclases and is the only one containing a cetonic group. In this study, we clonedExpand
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Crude leaf extracts of Piperaceae species downmodulate inflammatory responses by human monocytes
In this study, we aimed to evaluate the immunomodulatory effects of crude leaf extracts from Piper gaudichaudianum Kunth, P. arboreum Aub., P. umbellata L., P. fuligineum Kunth, and PeperomiaExpand
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Trypanocidal tetrahydrofuran lignans from Peperomia blanda.
Five tetrahydrofuran lignans and two known flavones were isolated from the aerial parts of Peperomia blanda. The structures of the isolated lignans were elucidated by interpretation of theirExpand
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Structure and absolute configuration of a secolignan from Peperomia blanda
A secolignan, (−)-2-methyl-3-[bis(3′,4′-methylenedioxy-5′-methoxyphenyl) methyl]butyrolactone (1), with a rare cis configuration was isolated from the aerial parts of Peperomia blanda (Piperaceae).Expand
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1H NMR determination of adulteration of anabolic steroids in seized drugs
Graphical abstract Figure. No Caption available. Highlights1 H NMR was effective for determining the authenticity of anabolic steroids.80% of the samples presented some type ofExpand
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Kavalactones and Benzoic Acid Derivatives from Leaves of Piper fuligineum Kunth (Piperaceae)
The known kavalactones (E)-4-methoxy-6-styryl-2H-pyran-2-one, 4-methoxy6-(3-phenyloxiran-2-yl)-2H-pyran-2-one, 6-(1,2-dihydroxy-2-phenylethyl)-4-methoxy-2H-pyran2-one, the three benzoic acidExpand
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