An expedient synthesis of non-racemic N-alkylated pyrrolidin-2,5-diones and piperidin-2,6-diones as peptidomimetics

In our hands, access to 2 novel peptidomimetic scaffolds, based on N-alkylated pyrroldin-2,5-diones and piperidin-2,6-diones, proved to be much more challenging than anticipated. In this short communication, we disclose the strategies that we explored and our final route choices to the desired scaffolds with control of both stereocenters.