@article{article18114acd,
title   = {Novel sesquiterpene lactones from Eremanthus seidelii},
author = {Sousa, João Paulo Barreto and Tomaz, José Carlos and Silva, Cecilia C. P. and Ellena, Javier and Lopes, Norberto Peporine and Lopes, João Luis Callegari},
year = {2012},
doi = {10.1016/j.tetlet.2012.09.007},
journal   = {Tetrahedron Letters}
}