A new secoiridoid glucoside,vinmajoroside (1),was isolated from the leaves of Vinca major L. along with 11 known compounds belonging to the secoiridoid ((7α)-7-. O-methylmorroniside,2),iridoid (loganin,loganic acid and 7-. O-. p-coumaroylloganin),monoterpenoid glucoindole alkaloid (5 (S)-5-carboxyvincoside and strictosamide),flavonoid (rutin,kaempferol 3-O-rutinoside and robinin),lignan (syringaresinol 4-. O-β-glucopyranoside) and phenolic acid (chlorogenic acid) groups. The structure elucidation of the isolates was accomplished by extensive 1D and 2D-NMR experiments as well as ESI-MS. Secoiridoids and lignan were encountered for the first time in the genus Vinca.
Iridoids, monoterpenoid glucoindole alkaloids and flavonoids from Vinca major
MASULLO, MILENA;PIACENTE, Sonia;
2013
Abstract
A new secoiridoid glucoside,vinmajoroside (1),was isolated from the leaves of Vinca major L. along with 11 known compounds belonging to the secoiridoid ((7α)-7-. O-methylmorroniside,2),iridoid (loganin,loganic acid and 7-. O-. p-coumaroylloganin),monoterpenoid glucoindole alkaloid (5 (S)-5-carboxyvincoside and strictosamide),flavonoid (rutin,kaempferol 3-O-rutinoside and robinin),lignan (syringaresinol 4-. O-β-glucopyranoside) and phenolic acid (chlorogenic acid) groups. The structure elucidation of the isolates was accomplished by extensive 1D and 2D-NMR experiments as well as ESI-MS. Secoiridoids and lignan were encountered for the first time in the genus Vinca.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
