Claisen rearrangements. XI. Synthesis of the coumarins, obliquetol, obliquetin and nieshoutin
Obliquetol 5 has been synthesised for the first time using improved conditions for prenyloxy-coumarin Claisen rearrangements. Efficient syntheses of obliquetin 6 and the related dihydrofuranocoumarin, nieshoutin 13 are also reported. The structure assigned to the natural coumarin, celerin, requires revision.
Murray,Jorge
p. 3163 - 3165
(2007/10/02)
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