Wm. Daniewski et al., ENTILIN-C, A NOVELL HEPTANORTRITERPENOID FROM ENTANDROPHRAGMA-UTILE (MELIACEAE), Polish Journal of Chemistry, 68(3), 1994, pp. 499-502
New heptanortriterpenoid Entilin C has been isolated from the bark of
Entandrophragma utile, its structure has been assigned on the basis of
extensive NMR experiments.