Biogenesis of linear O-alkylfuranocoumarins: A new pathway involving 5-hydroxymarmesin |
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Authors: | Giuseppe Caporale Gabbriella Innocenti Adriano Guiotto Paolo Rodighiero Franceso DallAcqua |
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Institution: | Giuseppe Caporale,Gabbriella Innocenti,Adriano Guiotto,Paolo Rodighiero,Franceso Dall'Acqua |
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Abstract: | adioactivity from 3H] 5-hydroxymarmesin was incorporated into 5-methoxypsoralen by administration to leaves of Ficus carica and cut ends of Ruta graveolens. No other furanocoumarins were labelled. Trapping experiments, in which 3H]marmesin together with 5-hydroxymarmesin was administered to fig leaves and to cut ends of rue, provided good evidence that 5-hydroxymarmesin is formed by hydroxylation of marmesin. These results, together with those obtained previously with 8-hydroxymarmesin demonstrate that, in addition to the pathway which involves the hydroxylation of psoralen, the O-alkylfuranocoumarins are also formed by a pathway which involves the hydroxylation of marmesin. |
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Keywords: | Moraceae Rutaceae biogenesis marmesin 5-hydroxymarmesin |
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