A new isolation of vincamajine from Vinca difformis subsp. sardoa Stearn

The continuation of the phytochemical analysis to determine the alkaloid content of Vinca difformis subsp. sardoa Stearn, led to the isolation of the further compound vincamajine (1) which was reported from the species for the first time during this study. Its structure was established by means of extensive NMR, IR and MS analyses which are completely reported in this paper for the first time. In addition, the first chemophenetic evaluation about this compound was also carried out evidencing some important results which were fully described and discussed in this paper.