A novel triterpenoid saponin, Snatzkein E, was isolated from Arenaria filicaulis Boiss. It possesses a new aglycone and a glucose moiety carrying a sulfate group at C-2′. Its structure and conformational behaviour were investigated by one- and two-dimensional 1H and 13C NMR spectroscopy.
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Tóth et al. (1998) studied this question.
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