A general approach to medium-sized ring ethers via hydrolytic and oxidative kinetic resolutions: stereoselective syntheses of (−)-cis-lauthisan and (+)-isolaurepan
A short and enantioselective approach to medium ring ethers and itsapplication to the syntheses of (−)-cis-lauthisan and (+)-isolaurepan are described. The synthetic strategy features Jacobson's Hydrolytic KineticResolution (HKR), oxidative resolution of secondary alcohol, and highlydiastereoselective Et3SiH/TMSOTf-promoted reductive cyclization of a hydroxy ketone to give exclusively the different