Benzyl Ethers as Nucleophiles: From Hydroxy Cyclooctanes Toward Bridged C-Furanosides
摘要:
Attempted Lewis acid-mediated opening of a benzyloxy-functionalized eight-membered ring epoxide resulted in an intramolecular nucleophilic attack by a favorably disposed benzyloxy group to give a bridged furanose. A corresponding intramolecular nucleophilic attack of a benzyloxy group in a triflated cyclooctenol again gave a bridged furanose derivative.