Diastereoselective syntheses of chroman spiroketals via [4 + 2] cycloaddition of enol ethers and o-quinone methides |
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| Authors: | Marsini Maurice A Huang Yaodong Lindsey Christopher C Wu Kun-Liang Pettus Thomas R R |
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| Affiliation: | Department of Chemistry and Biochemistry, University of California at Santa Barbara Santa Barbara, California 93106-9510, USA. |
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| Abstract: | A variety of chroman spiroketals are synthesized via inverse-demand [4 + 2] cycloaddition of enol ethers and ortho-quinone methides (o-QMs). Low temperature o-QM generation in situ allows for the kinetic, diastereoselective construction of these motifs, providing entry to a number of unusual chroman spiroketal natural products. |
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