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cepharadione a/piper
Povezava se shrani v odložišče
5 rezultatov
Cepharadione A from Piper methysticum.
Samo registrirani uporabniki lahko prevajajo članke
Prijava / prijava
A new hydroxychavicol dimer from the roots of Piper betle.
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Prijava / prijava
A new hydroxychavicol dimer, 2-(g'-hydroxychavicol)-hydroxychavicol (1), was isolated from the roots of Piper betle Linn. along with five known compounds, hydroxychavicol (2), aristololactam A II (3), aristololactam B II (4), piperolactam A (5) and cepharadione A (6). The structures of these
New chemical constituents from the Piper betle Linn. (Piperaceae).
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Prijava / prijava
The phytochemical investigation of chloroform extract from Piper betle var. haldia, Piperaceae, leaves has resulted in the isolation of two new chemical constituents which were identified as 1-n-dodecanyloxy resorcinol (H1) and desmethylenesqualenyl deoxy-cepharadione-A (H4), on the basis of
Secondary metabolites from polar fractions of Piper umbellatum.
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Prijava / prijava
Seven known secondary metabolites were isolated from the methanol extract of the branches of Piper umbellatum. The identification of these compounds was mainly achieved by 2D NMR spectroscopic techniques and FAB-MS. Among them, the known cepharadiones A and B can be considered aschemotaxonomic
Alkaloids from Piper sarmentosum and Piper nigrum.
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Prijava / prijava
Detailed chemical studies on the roots of Piper sarmentosum and Piper nigrum have resulted in several alkaloids. The roots of P. sarmentosum gave a new aromatic compound, 1-nitrosoimino-2,4,5-trimethoxybenzene (1). Piper nigrum roots gave pellitorine (2),
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