Add time:08/25/2019 Source:sciencedirect.com
The structure of the natural coumarins, 5-methoxyseselin 7 and trachyphyllin 14 have been confirmed by total syntheses from 7-acetoxy-5-prenyloxycoumarin 1 in good overall yields. Convenient synthetic routes to the natural coumarins, Coumurrayin (cas 17245-25-9) 4 and xanthoxyletin 10 have also been established.
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