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Org Lett. 2012 Dec 7;14(23):5936-9. doi: 10.1021/ol302849v. Epub 2012 Nov 19.

Isolation and biomimetic synthesis of (±)-guajadial B, a novel meroterpenoid from Psidium guajava.

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  • 1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.

Abstract

(±)-Guajadial B (1), an unusual humulene-based meroterpenoid, was isolated as a racemate from the leaves of Psidium guajava, collected from Vietnam. The structure of this novel secondary metabolite was established on the basis of extensive analysis of NMR spectra and confirmed by biomimetic synthesis in a domino three-component coupling reaction.

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