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Aegelinol benzoate, a new dihydroxanthyletin ester and the known coumarin esters agasyllin and grandivittin, as well as, aegelinol have been isolated from ERYNGIUM CAMPESTRE roots using column chromatography and subsequent semipreparative HPLC. The structures of the compounds have been elucidated by a combination of spectroscopic methods.
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Erdelmeier et al. (1985) studied this question.
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