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Short Reports • J. Braz. Chem. Soc. 17 (2) • Apr 2006 • https://doi.org/10.1590/S0103-50532006000200029   copy

Synthesis of Ent-16-hydroxycleroda-4(18),13-dien-15,16-olide and Ent-cleroda-4(18),13-dien-15,16-olide from (+)-hardwickiic acid

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The absolute configurations of two natural diterpene butenolides were confirmed through the synthesis of ent-16-hydroxycleroda-4(18),13-dien-15,16-olide (2) and ent-cleroda-4(18),13-dien-15,16-olide (3), enantiomers of the natural products, starting from (+)-hardwickiic acid (1).

(+)-hardwickiic acid; clerodane; butenolide; absolute configuration

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