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Two new iridal-type triterpenoids, named forrestins A and B (1 and 2), were isolated from Iris forrestii Dykes by comprehensive chromatographic methods. The structures of 1 and 2 were elucidated by interpretation of extensive spectroscopic data including 1D and 2D NMR and HRESIMS.
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Ni et al. (2019) studied this question.
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