Isolation of norditerpenoid alkaloids from flowers of aconitum lycoctonum
The structures of two new lycoctonine-type alkaloids having an acetoxy group at C-6, 6-O-acetyldemethylenedelcorine (1) and 6-O-acetyl-14-O-methyldelphinifoline (2), isolated from the flowers of Aconitum lycoctonum, were determined by spectroscopic analysis. In addition, 14-O-methyldelphinifoline (4), gigactonine (5), and lycoctonine (6) were obtained.
Chen
Y
Natural Products Research Laboratory, Dr. Alfred Katz, Oberwilerstrasse 9, CH-4054 Basel, Switzerland.
Katz
A