A new alkaloid was isolated from the leaves of Macleaya cordata with 95% ethanol extracted and its isolation was by column chromatography and preparation HPLC. The new structure was elucidated as 6'-hydroxy-2',3'-dimethoxyarnottianamide on the basis of its spectroscopic date.
Keywords: 6′-hydroxy-2′,3′-dimethoxyarnottianamide; Macleaya cordata.
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