Hemisynthesis of New Triterpene Derivatives using Oxidation by CrO₃ and NaIO₄‐(RuCl₃, 3H₂O)

N. Mazoir Chemistry Laboratory of Natural Substances, University Cadi Ayyad, Faculty of Sciences Semlalia, Marrakech, Morocco

A. Auhmani Chemistry Laboratory of Natural Substances, University Cadi Ayyad, Faculty of Sciences Semlalia, Marrakech, Morocco

M. Daoubi Chemistry Laboratory of Natural Substances, University Cadi Ayyad, Faculty of Sciences Semlalia, Marrakech, Morocco

I. G. Collado Department of Organic Chemistry, Faculty of Sciences, University of Cádiz, Cádiz, Spain

A. Benharref Chemistry Laboratory of Natural Substances, University Cadi Ayyad, Faculty of Sciences Semlalia, Marrakech, MoroccoCorrespondence[email protected]

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.

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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.

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Hemisynthesis of New Triterpene Derivatives using Oxidation by CrO₃ and NaIO₄‐(RuCl₃, 3H₂O)

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Hemisynthesis of New Triterpene Derivatives using Oxidation by CrO3 and NaIO4‐(RuCl3, 3H2O)

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Hemisynthesis of New Triterpene Derivatives using Oxidation by CrO₃ and NaIO₄‐(RuCl₃, 3H₂O)