The hexane extract of the bark of Entandrophragma delevoyi has yielded a no
vel tetranortriterpenoid, delevoyin C. This compound contains a cyclobutany
l ring incorporating C-19 and a cycloheptanyl ring C including C-30. Geduni
n and 11 beta-Acetoxygedunin were isolated from the hexane extract of the w
ood. (C) 2000 Elsevier Science Ltd. All rights reserved.