Asymmetric Total Synthesis of Cryptorigidifoliol I

J Org Chem. 2024 Apr 5;89(7):5207-5214. doi: 10.1021/acs.joc.4c00259. Epub 2024 Mar 14.

Abstract

An efficient asymmetric total synthesis of cryptorigidifoliol I based on an unusual Luche reduction leading to bicyclic etherification and acid hydrolysis to a thermodynamically less stable 4-hydroxy-2,6-trans-disubstituted-THP moiety has been achieved. The easy setup of trans-2,6-substitution on the core pyran ring through bicyclic etherification would enable the synthesis of various THP and bicyclic-THP-lactone natural products.