Phenylpropanoids from the stem bark of Jacaranda mimosaefolia

Abstract

Two new compounds: 2-(3′,4′-dihydroxyphenyl) ethyl-3-O-α-L-rhamnopyranosyl-4-O-p-hydroxyphenylacetyl-6-O-caffeoyl-β-D-glucopyranoside and 2-(3′,4′-dihydroxyphenyl) ethyl-3-O-α-L-rhamnopyranosyl-4-O-piperidine-3-carboxylic acid-6-O-caffeoyl-β-D-glucopyranoside were isolated from the stem bark of Jacaranda mimosaefolia. In addition, the known compounds lupeol, betulinaldehyde, terminic acid, betulinic acid, maslinic acid, β-sitosterol glucoside and isoacteoside were isolated and identified.

Keywords:

• Jacaranda mimosaefolia
• Bignoniaceae
• phenylpropanoids
• isoacteosides

Acknowledgement

The authors are grateful to Professor Dr Khalid A. El-Sayed, Department of Basic Pharmaceutical Science, University of Louisiana at Monroe, USA, for running NMR analyses of some of the isolated compounds.