Triterpenoids from Mangifera indica

Abstract

A new pentacyclic triterpenoid, hopane-1ß,3ß,22-triol, was isolated from the neutral fraction of the n-hexane extract of the stem bark of Mangifera indica. From the acidic fraction of the same extract four new tetracyclic triterpenoids, 3a,22(R or S)-dihydroxycycloart-24E-en-26-oic acid, 3ß,22(R or S)-dihydroxycycloart-24E-en-26-oic acid, 3ß,23(R or S)-dihydroxycycloart-24E-en-26-oic acid and 3a,27-dihydroxycycloart-24E-en-26-oic acid were isolated. The structures were elucidated by spectroscopic and chemical methods.