<b>Sapelenin E and F: new acyclic triterpenoids from the stem bark of <i>Entandrophragma cylindricum</i></b>

Abstract

New acyclic triterpenoids, sapelenin E (1) and F (2) were isolated from the stem bark of Entandrophragma cylindricum. Their full structure including absolute configuration in sapelenin E (1) were determine from spectroscopic data and by chemical transformation.

Keywords

• <i>Entandrophragma cylindricum</i>
• Sapelenin
• Meliaceae
• Acyclic triterpenoids