Rubescins I and J, further limonoid derivatives from the stem bark of Trichilia rubescens (Meliaceae)

Armelle Tontsa TsamoFaculty of Science, Department of Organic Chemistry, University of Yaounde I, Yaounde, Cameroon;Faculty of Science, Department of Chemistry, Tshwane University of Technology, Pretoria, South AfricaCorrespondence[email protected]

Raduis MelongFaculty of Science, Department of Organic Chemistry, University of Yaounde I, Yaounde, Cameroon;Institute for Organic and Biomolecular Chemistry, Georg-August University, Göttingen, Germany

Pierre MkoungaFaculty of Science, Department of Organic Chemistry, University of Yaounde I, Yaounde, Cameroon

Augustin Ephrem NkengfackFaculty of Science, Department of Organic Chemistry, University of Yaounde I, Yaounde, CameroonCorrespondence[email protected]

Abstract

Two new tetranorterpenoid derivatives named rubescins I (1) and J (2), were isolated along with six known compounds including rubescin D (3), lichexanthone (4), scopoletin (5), scopoletin O-glycoside (6), β-sitosterol (7) and stigmasterol (8) from the stem bark of Trichilia rubescens (Meliaceae). The structures of the compounds were determined by means of MS, different NMR and by comparison with related data reported in the literature.

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Acknowledgement

The authors are indebted to Victor Nana for technical assistance.

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Rubescins I and J, further limonoid derivatives from the stem bark of Trichilia rubescens (Meliaceae)

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Rubescins I and J, further limonoid derivatives from the stem bark of Trichilia rubescens (Meliaceae)

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