A sesquiterpene alcohol (-)-myltaylenol with a novel carbon skeleton has been isolated from the liverwort Mylia taylorii, and its structure (3), including the absolute configuration, has been determined on the basis of chemical and spectroscopic evidence as well as X-ray analysis of the benzoate derivative (7).We have already reported1.2 the isolation and structure absolute stereochemical configuration; it possesses a novel determination of the two sesquiterpenoids (-)-myliol (1) and irregular sesquiterpene skeleton. t (-)-taylorione (2)y both with carbon from the + We suggest the trivial name myltaylane for the new skeleton, liverwort MYlia taYlorii (Hook.) s. Gray. We have now numbered as in (3) on the basis of the numbering of the presumed obtained a third sesquiterpenoid, (-)-myltaylenol, from the biogenetic precursor cis-farnesyl pyrophosphate. Thus, (-)same liverwort and have determined its structure (3) and myltaylenol is myltayl-4( 12)-en-15-01.
The structure of the title compound, deiodo lactone compound, was determined by X-ray crystallographic analysis: The results lead to a revision of the previously proposed structure for iodolactonization product of 9-methyl-3-oxo-2-oxabicyclo[4.4.0]deca-4,8-diene-6-carboxylic acid.
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