acacic acid/albizia julibrissin

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A triterpenoid saponin from Albizia julibrissin.

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A triterpenoid saponin (1) was obtained from the stem barks of Albizia julibrissin Durazz. Its structure was elucidated as 3-O-[beta-D-xylopyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl-(1 --> 6)-beta-D-glucopyranosyl]-21-O-[(6S)-2-trans-2-hydroxymethyl-6-methyl-6-O-beta-D-quinovopyranosyl-2,

A new triterpenoid saponin from Albizia julibrissin Durazz.

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A new triterpenoid, saponin hehuanoside A, was isolated together with the known triterpenoid saponins 2, 3, and 4 from the stem bark of Albizia julibrissin. With the help of chemical and spectral analyzes (IR, MS, 1D-NMR, and 2D-NMR), the structure of the new triterpenoid saponin was elucidated as

[The structure identification of Julibroside J6 from Albizia julibrissin Durazz].

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OBJECTIVE To study the saponin from Albizia julibrissin. METHODS A saponin was separated by using chromatography and its structure was elucidated on the basis of spectral data. RESULTS A saponin was obtained and it's structure was identified as

[Isolation and identification of chemical constituents from Albizia julibrissin Durazz].

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OBJECTIVE To study the chemical constituents of the stem bark of Albizia julibrissin Durazz. METHODS Chemical constituents were isolated by the repeated chromatography methods and their structures were identified by spectral analysis. RESULTS Five compounds were obtained as follows:

Two diastereomeric saponins with cytotoxic activity from Albizia julibrissin.

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Two diastereomeric saponins, julibrosides J1 (1) and J9 (2), both of which show cytotoxic activity, were obtained from the stem bark of Albizia julibrissin Durazz. On the basis of chemical and spectral evidence [L.B. Ma et al., Carbohydr. Res., 281 (1996) 35-46], the structure of 1 was revised as

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