Guaiane sesquiterpenes from agarwood
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Abstract Seven new sesquiterpenes, all of which have a guaiane skeleton, i.e. (−)-guaia-1(10),11-dien-15-ol, (−)-guaia-1(10),11-diene-15-carboxylic acid, methyl guaia-1(10),11-diene-15-carboxylate, (+)-guaia-1(10),11-dien-9-one, (−)-1,10-epoxyguai-11-ene, (−)-guaia-1(10),11-dien-15,2-olide and (−)-rotundone, have been isolated from Aquilaria agallocha (agarwood). Their structures have been established on the bases of detailed spectroscopic analyses and synthesis.
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