Homoerythrina alkaloids from Phelline comosa var. robusta. Three new homoerythrina alkaloids have been isolated from the leaves of Phelline comosa Labill. var. robusta (Baill.) Loesner and characterized as 2alpha-hydroxycomosivine, 1,6alpha-epoxyrobustivine and 18-de-O-methylholidinine. (C) 2003 Academie des sciences. Publie par Elsevier SAS. Tous droits reserves.