Abstract
Oxidation of triterpenes resulting from E. resinifera, E. officinarum, and their derivatives, using chromic anhydride (CrO3) and the system NaIO4‐(RuCl3,3H2O), gives carbonyl triterpenic compounds with high chemioselectivity.
AcknowledgmentS
This work was partially supported by the Collaborative Project CSIC–Laboratory of Natural Substances, University Cadi Ayyad, Faculty of Sciences Semlalia Marrakesh (FSSM), Marrakesh, Morocco, Ref. 2004 MA 0009.