cepharadione a/piper

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5 matokeo

Cepharadione A from Piper methysticum.

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Ingia / Ingia

A new hydroxychavicol dimer from the roots of Piper betle.

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Ingia / Ingia

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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Ingia / Ingia

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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Ingia / Ingia

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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Ingia / Ingia

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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