Diisobutylaluminum hydride as a molecular scalpel:the regioselective stripping of four methyl groups from permethylated beta-cyclodextrin

摘要

A regioselective DIBAL-promoted tetra-O-demethylation on the secondary rim of the permethylated(3-cyclodextrin gave a straightforward access to the 2~A,3~B,2~D,3~E tetrol.