The structure of alatol
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From the roots ofPrangos alata Grossh (Prangos biebersteinii Karjag) a new furocoumarin (I), C17H18O6, mp 125–127°C (from benzene), which has been called alatol, has been isolated.
On the basis of the results of IR and NMR spectra and chemical properties, the structure of 5-(2″-hydroxy-3″-methoxy-3″-methylbutoxy)-furo-2′,3′:7,6-coumarin has been proposed for (I). This structure has been confirmed by the partial synthesis and by the mass spectra of alatol and of its acetate.
KeywordsCoumarin Acetic Anhydride Deuterated Chloroform Chromium Trioxide Osthole
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