@article{froelich_gupta_siems_jenett-siems_2008,  title={Phenylethanoid glycosides from Stachytarpheta cayennensis (Rich.) Vahl, Verbenaceae, a traditional antimalarial medicinal plant},  volume={18},  ISSN={0102-695X},  url={https://doi.org/10.1590/S0102-695X2008000400003},  DOI={10.1590/S0102-695X2008000400003},  number={4},  journal={Revista Brasileira de Farmacognosia},  publisher={Sociedade Brasileira de Farmacognosia},  author={Froelich, Sonja and Gupta, Mahabir P. and Siems, Karsten and Jenett-Siems, Kristina},  year={2008},  month={Oct},  pages={517–520} }