Helvetica Chimica Acta p. 2038 - 2047 (1986)
Update date:2022-08-10
Topics:
Dorsaz, Anne-Christine
Hostettmann, Kurt
Three new bidesmosidic saponins 1-3 have been isolated from the berries of Phytolacca dodecandra L'HERIT (Phytolaccaceae).The structures have been established by spectroscopic ((1)H-NMR, (13)C-NMR, FAB-MS, DCI-MS, and GC/MS) and chemical methods (acid, basic, and enzymatic hydrolysis).Saponins 1 and 3 are tetra- and pentaglycosides of oleanolic acid, whereas 2 is a tetraglycoside of bayogenin.The corresponding prosapogenins 1a-3a, obtained by cleavage of a glucose unit esterified at C(28), exhibited strong molluscicidal activity against schistosomiasis-transmitting snails.
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