@article{almeida_correia_1999,  title={Stereoselective total synthesis and enantioselective formal synthesis of the antineoplastic sesquiterpene quinone metachromin A},  volume={10},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50531999000500011},  DOI={10.1590/S0103-50531999000500011},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Almeida, Wanda P. and Correia, Carlos Roque D.},  year={1999},  month={Sep},  pages={401–414} }