Synthesis of novel dispiro-acenaphthenone grafted dipyrrolopiperazine scaffolds via 1,3-dipolar cycloaddition involving azomethine ylides

The synthesis of novel dispiro-acenaphthenone grafted dipyrrolopiperazine scaffolds was achieved through a 1,3-dipolar cycloaddition reaction involving azomethine ylides, providing a straightforward route to construct complex, three-dimensional molecular architectures with potential biological significance. This study utilized acenaphthenequinone as the core structural component, offering a rigid framework for subsequent cycloaddition reactions, azomethine ylides were produced in the reaction mixture through the condensation of an amino acid and an aldehyde, facilitating the 1,3-dipolar cycloaddition with acenaphthenone in a way that is selective for both region and stereochemistry. The resulting dipyrrolopiperazine-fused dispiro compounds were purified and characterized using spectroscopic techniques, confirming the successful formation of highly constrained spirocyclic frameworks. The synthesized dispiro-acenaphthenone dipyrrolopiperazine scaffolds possess significant potential for further exploration in drug discovery due to their unique spatial configurations and functional moieties