Two new cycloartane glycosides from the aerial parts of Thalictrum simplex subsp. amurense

Two new cycloartane glycosides (1 and 2) and ten known compounds, including cycloartane glycosides (3–4), flavonoid glycosides (5–7), anthraquinones (8–10), and phenylethanols (11–12), were isolated from the aerial parts of Thalictrum simplex subsp. amurense (Maxim.) Hand. Their structures were elucidated using comprehensive spectroscopic techniques, including HR-ESI-MS and 2D NMR. Notably, all isolated compounds were reported for the first time from T. simplex subsp. amurense, with compounds 9 and 10 being the first to be found in the family Ranunculaceae. Furthermore, the chemotaxonomic significance of these secondary metabolites is discussed.