2.3.1.145 (E,E)-piperoyl-CoA + piperidine - Piper nigrum CoA + N-[(E,E)-piperoyl]-piperidine - ? 320523 2.3.1.145 piperoyl-CoA + 3-pyrroline 25% of activity with piperidine Piper nigrum CoA + piperoyl-(3-pyrroline) - ? 320525 2.3.1.145 piperoyl-CoA + pyrrolidine 76% of activity with piperidine Piper nigrum CoA + piperoylpyrrolidine - ? 320524