Cycloadditions of 3-methoxyfuran (1) with several mono-activated dienophiles gave the endo adducts stereoselectively under the usual conditions in satisfactory yields; two of the adducts were transformed into potential intermediates (7a) and (7b) for the synthesis of (±)-avenaciolide and (±)-isoavenaciolide, respectively.
A. Murai, K. Takahashi, H. Taketsuru and T. Masamune, J. Chem. Soc., Chem. Commun., 1981, 221 DOI: 10.1039/C39810000221
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