A novel iridoid glycoside from the aerial parts of the Tunisian Prasium majus

Abstract

Repeated fractionation of the acetylated methanol extract of Prasium majus afforded acetylated derivatives of a new iridoid glycoside hamighriprasin (1), myoporoside (2), β-D-glycopyranose (3) and saccharose (4). The structures of 1 and 2 were established by interpretation of 1D and 2D NMR data of their corresponding acetylated derivatives and by comparison with the literature.

Keywords:

• Prasium majus
• Iridoid glycoside
• Hamighriprasin
• Sugars
• NMR

Acknowledgments

The authors wish to thank Dr F. Harzallah-Skhiri, Laboratoire de Biologie Végétale et Botanique, Ecole Supérieure d’Horticulture et d’Elevage de Chott Mériem, Université du Centre, Sousse, Tunisia, for botanical classification of the plant material.