@article{lago_oliveira_guimarães_kato_2007,  title={3-Ishwarone and 3-Ishwarol, rare sesquiterpenes in essential oil from leaves of Peperomia oreophila Hensch.},  volume={18},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532007000300022},  DOI={10.1590/S0103-50532007000300022},  number={3},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Lago, João Henrique G. and Oliveira, Alberto de and Guimarães, Elsie F. and Kato, Massuo J.},  year={2007},  pages={638–642} }