From the aerial parts of Delphinium carduchorum, we have isolated three kno
wn norditerpenoid alkaloids (delcaroline, deltatsine, 18-hydroxy-14-O-methy
l-gadesine) and two new diterpenoid alkaloids, carduchoron and delcarduchol
. The structures of the newly isolated alkaloids were established from spec
troscopic data. (C) 1999 Elsevier Science Ltd. All rights reserved.