3 years ago
Formal Synthesis of (+)-Laurencin by Gold(I)-Catalyzed Intramolecular Dehydrative Alkoxylation
Anthony A. Ribeiro, Jacob C. Timmerman, Ross A. Widenhoefer, Megan L. Lanier, Paramita Mukherjee, Jiyong Hong, Hyeri Park
8-Membered cyclic ethers are found in a wide range of natural products; however, they are challenging synthetic targets due to enthalpic and entropic barriers. The gold(I)-catalyzed intramolecular dehydrative alkoxylation of ω-hydroxy allylic alcohols was explored to stereoselectively construct α,α′-cis-oxocenes and further applied in a formal synthesis of (+)-laurencin. The gold(I)-catalyzed intramolecular dehydrative alkoxylation may constitute an alternative method for the synthesis of molecular building blocks and natural products that contain highly functionalized 8-membered cyclic ethers.
Go for gold! 8-Membered cyclic ethers are challenging synthetic targets found in a wide range of natural products. The gold(I)-catalyzed intramolecular dehydrative alkoxylation of ω-hydroxy allylic alcohols was explored to stereoselectively construct α,α′-cis-oxocenes and further applied in a formal synthesis of (+)-laurencin. The gold(I)-catalyzed intramolecular dehydrative alkoxylation may constitute an alternative method for the synthesis of highly functionalized medium-sized cyclic ethers.
Publisher URL: http://onlinelibrary.wiley.com/resolve/doi
DOI: 10.1002/chem.201700499
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