The authors regret that the structure of khasuanine A(1) presented in this article was misassigned. The NMR data presented for khasuanine A were found to correspond to those obtained by Lounasmaa1 for (E)-akuammidine (Fig. 1); accordingly, the material we obtained from Melodinus khasianus should be assigned to this alkaloid. The authors apologise for any inconvenience caused. © 2020 Elsevier Ltd