Four minor triterpenes, sapelins C, D, E, and F, have been isolated from Entandrophragma cylindricum Sprague. Sapelin F is a pentahydroxy tirucall-7-ene. The others are derivatives of 7 α-hydroxyapotirucall-14-ene. The structures of these triterpenes have been established by correlation with sapelins A and B.
W. R. Chan, D. R. Taylor and T. H. Yee, J. Chem. Soc. C, 1971, 2662 DOI: 10.1039/J39710002662
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