Planta Medica 1990-Oct
New Furans from Cirsium chlorolepis.
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From the roots of CIRSIUM CHLOROLEPIS (Compositae) two known compounds, 5-hydroxymethyl-2-furancarboxaldehyde, and 5-methoxymethyl-2-furan-carboxaldehyde, and two new compounds, cirsiumal-dehyde ( 2), and cirsiumoside ( 3), were isolated. Their structures have been elucidated by means of UV, IR, (1)H-NMR, (13)C-NMR spectroscopy, and chemical reactions.