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Journal articles
Triterpenoid saponins and acylated prosapogenins from Harpullia austro-caledonica
Abstract : Three new triterpenoid saponins have been isolated from the stem bark of Harpullia austro-caledonica and identified as 24-O-[alpha-L-rhamnopyranosyl-(1->2)-beta-D-glucopyranosyl]-28-O-[beta-D-glucopyranosyl-(1->2)-beta-D-glucopyranosyl]-protoaescigenin, 24-O-[alpha-L-rhamnopyranosyl-(1->2)-beta-D-glucopyranosyl]-28-O-[beta-D-glucopyranosyl-(1->2)-beta-D-glucopyranosyl]-16-desoxyprotoaescigenin, 24-O-[alpha-L-rhamnopyranosyl-(1->2)-beta-D-glucopyranosyl]-28-O-[beta-D-glucopyranosyl-(1->2)-beta-D-glucopyranosyl]-24-oxo-camelliagenin D. The 21,22-di-O-angeloate esters of protoaescigenin and barringtogenol C were isolated in the acid hydrolysate of the saponin extract together with a new prosapogenin identified as 21beta,22alpha-di-O-angeloyl camelliagenin D. The structures were established using one- and two- dimensional NMR and mass spectrometry.
https://hal.univ-reims.fr/hal-01996972
Contributor : Laurence Voutquenne Connect in order to contact the contributor
Submitted on : Wednesday, September 22, 2021 - 12:38:01 PM
Last modification on : Thursday, May 5, 2022 - 4:15:48 PM
Long-term archiving on: : Thursday, December 23, 2021 - 6:37:37 PM
Contributor : Laurence Voutquenne Connect in order to contact the contributor
Submitted on : Wednesday, September 22, 2021 - 12:38:01 PM
Last modification on : Thursday, May 5, 2022 - 4:15:48 PM
Long-term archiving on: : Thursday, December 23, 2021 - 6:37:37 PM
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