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Coumarins and psoralens from sicilian lemon oil citrus limon l. burm. f

Coumarins and psoralens from sicilian lemon oil citrus limon l. burm. f

Flavour and Fragrance Journal 7(3): 129-139

The coumarin fraction of cold-pressed Sicilian lemon oils (Citrus limon (L.) Burm. f.) was investigated by HPLC MS, GC-MS and NMR. Twenty-nine structurally different compounds were identified. Eleven of these were previously unknown as constituents of lemon oil. 5-(2'3'-Dihydroxy-3'-methylbutyloxy)-7-methoxycoumarin, 5-(2'3'-epxoy-3'-methylbutyloxy)-7-methoxycoumarin, 8-(7',8'-epoxygeranyloxy)psoralen as well as 5-(3'-methylbut-2'-enyloxy)-8-(2",3"-dihydroxy-3"-methylbutloxy)psoralen are hitherto unknown natural products. Morevover, a new derivatization method for the investigation of allyloxycoumarins, based on mild hydrogenation, is presented.

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Accession: 007165858

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DOI: 10.1002/ffj.2730070307

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