Total synthesis of (±)-gracilioether F was achieved via a pivotal reductive cleavage of 1,2-dioxane from allenic ester in 11 steps. The key 1,2-dioxane species, derived from singlet oxygen and a diene, could be used as a common precursor for a stereocontrolled formation of the crucial 1,4-diol through a reductive cleavage.
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| http://dx.doi.org/10.1021/acs.orglett.6b00161 | DOI Listing |
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