Four new triterpenoids isolated from the resin of Garcinia hanburyi

Abstract

Four new triterpenoids, 2-O-acetyl-3-O-(4′-O-acetyl)-α-l-arabinopyranosylmaslinic acid (1), 2-O-acetyl-3-O-(3′-O-acetyl)-α-l-arabinopyranosylmaslinic acid (2), 2-O-acetyl-3-O-(3′,4′-O-diacetyl)-α-l-arabinopyranosylmaslinic acid (3), and 3-O-(3′-O-acetyl)-α-l-arabinopyranosyloleanolic acid (4), together with six known triterpenoids, 3-O-(4′-O-acetyl)-α-l-arabinopyranosyloleanolic acid (5), maslinic acid (6), 2-O-acetylmaslinic acid (7), 3-O-acetylmaslinic acid (8), betulinic acid (9), and 2α-hydroxy-3β-O-acetylbetulinic acid (10), were isolated from the EtOAc extract of Garcinia hanburyi resin. Their structures were elucidated by analysis of the spectroscopic data and chemical methods.

Keywords::

• Garcinia hanburyi
• Guttiferae
• triterpenoid
• saponin