@article{vieira_braz filho_rodrigues filho_vieira_silva_fernandes_1999,  title={20(R)- and 20(S)-Simarolide Epimers Isolated from Simaba cuneata: Chemical Shifts Assignment of Carbon and Hydrogen Atoms},  volume={10},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50531999000100012},  DOI={10.1590/S0103-50531999000100012},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Vieira, Ivo José Curcino and Braz Filho, Raimundo and Rodrigues Filho, Edson and Vieira, Paulo Cezar and Silva, Maria Fátima G.F. da and Fernandes, João Batista},  year={1999},  month={Jan},  pages={76–84} }