NMR-Assignments of N-Acylaporphine Alkaloids from Tinospora crispa.
N-Formylannonaine ( 1), N-formylnornuciferine ( 2) and N-acetylnornuciferin ( 3), have been isolated from stems of TINOSPORA CRISPA (Menispermaceae), and their NMR-spectra have been fully assigned by 2D-NMR experiments. This is the first reported occurrence of N-formyl- and N-acetylaporphines from the genus TINOSPORA.
Pachaly
P
P
Pharmazeutisches Institut der Universität Bonn, Kreuzbergweg 26, D(W)-5300 Bonn, Federal Republic of Germany.
Adnan
A Z
AZ
Will
G
G