The firsttotalsynthesis of (+/-)-psychotrimine, a novel trimeric indolealkaloid isolated from Psychotria rostrata, was achieved. In the totalsynthesis, the copper-mediated intramolecular and intermolecular aminations of halobenzenes, which respectively contributed to the construction of a pyrrolidinoindoline core and the installation of a third tryptamine unit, were used as key steps.