Four phloroglucinol derivatives have been isolated from Hagenia abyssinica (Bruce) Gmel. The structure (IV) and partial structures (V), (VI) and (VII) are proposed. All are mixtures of isobutyryl (iB), isovaleryl (iV) and 2-methylbutyryl (2-MeB) side chain homologues. The two latter acyl groups have been detected for the first time in kousso. © 1973.
Lounasmaa, M., Widén, C. J., & Huhtikangas, A. (1973). Phloroglucinol derivatives of Hagenia abyssinica. Phytochemistry, 12(8), 2017–2025. https://doi.org/10.1016/S0031-9422(00)91527-9