Regioselectivity of selenoxide elimination: synthesis of the cyclohexenediol fragment of non-aromatic β-milbemycins
Abstract
Whereas selenoxide elimination from the hydroxyselenide (6) gave predominantly exocyclic elimination, preferred endocyclic elimination was observed from the corresponding ketone (5), and was applied to a synthesis of the cyclohexenediol fragment of the non-aromatic β-milbemycins.