Bidesmosidic oleanane saponins from Xerospermum noronhianum
Three new oleanane-type triterpenoid saponins, 3-O-(α-L-rhamnopyranosyl(12)-β-D-fucopyranosyl)-28-O-{[α-L-rhamnopyranosyl(12)] [β-D-fucopyranosyl(16)]-β-D-glucopyranosyl} oleanolic acid (1), 3-O-[α-L-rhamnopyranosyl(13)-β-D-fucopyranosyl]-28-O-[α-L-rhamnopyranosyl(14)-β-D-glucopyranosyl] oleanolic a...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Verlag Helvetica Chimica Acta
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13391/1/Bidesmosidic%20oleanane%20saponins%20from%20Xerospermum%20noronhianum.pdf http://psasir.upm.edu.my/id/eprint/13391/ |
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| Institution: | Universiti Putra Malaysia |
| Language: | English |
| Summary: | Three new oleanane-type triterpenoid saponins, 3-O-(α-L-rhamnopyranosyl(12)-β-D-fucopyranosyl)-28-O-{[α-L-rhamnopyranosyl(12)] [β-D-fucopyranosyl(16)]-β-D-glucopyranosyl} oleanolic acid (1), 3-O-[α-L-rhamnopyranosyl(13)-β-D-fucopyranosyl]-28-O-[α-L-rhamnopyranosyl(14)-β-D-glucopyranosyl] oleanolic acid (2), and 3-O-{α-L-rhamnopyranosyl(12)-[3′,4′-diacetoxy-β-D-fucopyranosyl]}-28-O-[α-L-rhamnopyranosyl(12)-β-D-glucopyranosyl] oleanolic acid (3) have been isolated from the stems of Xerospermum noronhianum. The structures of the saponins were determined as a series of bidesmosidic oleanane saponins based on spectral evidence. The anticholinesterase activity of the saponins 1–3 was also evaluated. |
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