| abstract |
An azetidine derivative is provided of the formula,n wherein R is a hydrogen atom or a hydroxyl group, and R a , R b , R c , R;, R b and R c ' all represent lower alkyl groups, at least some of which groups may be the same. A process for the production of such derivatives is described. The derivatives are useful as intermediates in the production of β-lactam compounds having antibacterial activities. |