A new 5,6,7,8-tetraoxygenated coumarin, purpurasolol, has been isolated from Pterocaulon purpurascens and its structure was determined by spectroscopic analysis. Fraxetin was also isolated for the first time from this plant
A new 5,6,7,8-tetraoxygenated coumarin, named purpurenol, was isolated from aerial parts of Pterocaulon purpurascens. Its structure was elucidated on the basis of the spectral data and was confirmed by X-ray analysis
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