Abstract
AbstractThe synthesis of 3‐azabicyclo[3.2.0]heptane‐6‐carboxylic acid and 7‐substituted derivatives was developed as bicyclic analogues of γ‐aminobutyric acid. A sensitized, intermolecular [2+2] photocycloaddition of maleic anhydride with N‐protected 3‐pyrroline served as the key step in these syntheses. Upon transformation of the anhydride function of the primary cycloaddition product, 6‐monosubstituted and 6,7‐disubstituted 3‐azabicyclo[3.2.0]heptane derivatives were obtained.
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