@article{article745b495e,
title   = {Structure of a triterpene extracted from austroplenckia populnea (celastraceae), methyl 3-oxofriedelan-20-'ALFA'-oate},
author = {Cota, A B and Mascarenhas, Yvonne Primerano and Silva, G D F and Souza, J R},
year = {1990},
journal   = {Acta Crystallographica C}
}