Helvetica Chimica Acta p. 668 - 674 (1989)
Update date:2022-08-11
Topics:
Maillard, Marc
Adewunmi, Clement O.
Hostettmann, Kurt
Activity-guided fractionation of the MeOH extract of the fruits of Tetrapleura tetraptera TAUB. (Mimosaceae) afforded 4 saponins 1-4, which exhibited strong molluscicidal properties against the schistosomiasis-transmitting snails Biomphalaria glabrata.Chemical, enzymatic, and spectral methods (DCI-MS, 1H-NMR, 13C-NMR) showed that they were N-acetylglycosides of oleanolic acid and of echinocystic acid.Apart from saponin 1 (aridanin), previously isolated from this plant, glycosides 2-4 are new naturally occuring compounds.
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