Five alkaloids were isolated from ripe fruits of Evodia rutaecarpa HOOK. f et THOMS. Four of these were found to be indoloquinazoline type alkaloids: rutecarpine (1), evodiamine (II) and two new alkaloids, dihydrorutecarpine (IV) and its 14-formyl derivative (III). The remaining one was a new quinolone alkaloid, I-methyl-2-nonyl-4(lH)-quinolone (V). The synthesis of II, III and IV was also achieved. © 1978 Taylor & Francis Group, LLC.