4-Epicycloeucalenone and 4-Epicyclomusalenone: Two 3-Oxo-28-norcycloartanes from the Fruit Peel of Musa sapientum L.

Abstract

Two 3-oxo-28-norcycloartane-type triterpenes, 4-epicycloeucalenone and 4-epicyclomusalenone, and two known 3-oxo-29-norcycloartanes, cycloeucalenone and cyclomusalenone, were isolated from the n-hexane extract of the fruit peel of Musa sapientum L. (banana). The structures of the 28-norcycloartanes were determined by spectroscopic and chemical methods.