@article{ferraz_bombonato_sano_longo jr._2008,  title={Natural occurrence, biological activities and synthesis of eight-, nine-, and eleven-membered ring lactones},  volume={31},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422008000400029},  DOI={10.1590/S0100-40422008000400029},  number={4},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Ferraz, Helena M. C. and Bombonato, Fernanda I. and Sano, Myrian K. and Longo Jr., Luiz S.},  year={2008},  pages={885–900} }