@article{dantas_valente_pinto_2003,  title={A new isopimarane diterpenoid from Vellozia pusilla pohl (velloziaceae)},  volume={14},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532003000100020},  DOI={10.1590/S0103-50532003000100020},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Dantas, Ana Letícia A. and Valente, Ligia Maria M. and Pinto, Angelo C.},  year={2003},  month={Jan},  pages={126–128} }