ABSTRACT Spermidine alkaloids are naturally occurring polyamines widely found in medicinal plants of the Solanaceae family. They have been extensively studied for their neuroprotective and anti‐inflammatory properties. Herein, we report the first total synthesis of N 1 ‐dihydrocaffeoyl‐ N 10 ‐caffeoyl spermidine and (±)‐Lycium spermidine A using readily available starting materials. The synthetic routes allow efficient preparation in commercially acceptable yields over six and seven steps. A key synthetic step involves reducing a nitrile to an amine and simultaneously reacting it with an activated acid to form an amide bond in one pot. This synthetic approach may facilitate the production of these compounds on an industrial scale.
He et al. (Fri,) studied this question.