Description:
<jats:p><jats:bold>Further Contributions to the Synthesis of (+)‐Aspicilin</jats:bold></jats:p><jats:p>There are two reasons to try to find out. whether the initial and final parts of the ‘photochemical synthesis’ of the 18‐membered lichen macrolide (+)‐aspicilin (<jats:bold>5a</jats:bold>) can be improved (<jats:italic>cf. Schemes 1</jats:italic> and <jats:italic>2</jats:italic>). This synthesis acts as an indicator for the utility of the earlier introduced photolactonization and as a source of large‐ring‐sized lactones, objects for computer‐assisted conformational analysis.</jats:p>