Manganese (III)??Promoted Tandem Oxidation and Cyclization of β??Keto Ester Derivatives of Terpenoids

…, H Jung, M Park, MS Lah, S Koo

Index: Li, Zhilong; Jung, Heejung; Park, Mira; Lah, Myoung Soo; Koo, Sangho Advanced Synthesis and Catalysis, 2011 , vol. 353, # 11-12 p. 1913 - 1917

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Citation Number: 13

Abstract

Abstract A new type of terpenoid cyclization directed by a β-keto ester moiety has been developed, which proceeded by manganese (III)-initiated oxidation of the β-keto ester, followed by an intramolecular hetero Diels–Alder reaction with the terpenoid chain. This reaction produces polycyclic dihydropyrans in high yields and stereoselectivities under mild conditions.