An isoflavane and saponins from Astragalus depressus L
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Date
2015
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Abstract
In this study, nine known secondary metabolites were isolated from
ethyl acetate and n-butanol extracts of Astragalus depressus L. (Fabaceae
family), including one isoflavane, namely pendulone (1) and eight saponins,
namely cyclogaleginoside A (2), astrasieversianin II (3), astrasieversianin IV
(4), astrasieversianin VIII (5), astrasieversianin VI (6), astrasieversianin XIV
(7), dehydrosoyasaponin I (8) and soyasaponin I (9). The structures of compounds 1–9 were elucidated by spectroscopic methods, including 1D and 2D
NMR, ESI mass spectrometry and comparison with literature data.