Two new sesquiterpene evoninate alkaloids, aquifoliunine E-III and aquifoli
unine E-IV, were isolated from the root bark of Maytenus aquifolium. The st
ructures of the new compounds were elucidated on the basis of spectroscopic
methods, including ES-MS. (C) 1998 Elsevier Science Ltd, All rights reserv
ed.