Cycloartanes and pentacyclic triterpenes from Awka and ijebuode propolis and evaluation of their antimicrobial activity

Abstract

Chemical investigation of propolis samples from southern Nigeria led to the isolation of cycloartanetype triterpenes namely: 24-methylene cycloartanol and ambonic acid along with pentacyclic triterpenes: Lupeol and α, β-amyrins. All compounds were identified and structures elucidated using proton nuclear magnetic resonance (1HNMR) spectroscopic data and comparison with literature.