bioRxiv preprint doi: https://doi.org/10.1101/2020.08.23.260091; this version posted August 24, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 Chemotaxonomic Investigation of Apocynaceae for Retronecine-Type Pyrrolizidine 2 Alkaloids Using HPLC-MS/MS 3 4 Lea A. Barny1, Julia A. Tasca1,2, Hugo A. Sanchez1, Chelsea R. Smith3, Suzanne Koptur4, Tatyana 5 Livshultz3,5,*, Kevin P. C. Minbiole1,* 6 1Department of Chemistry, Villanova University, Villanova, PA 19085, USA 7 2Department of Biochemistry and Molecular Biophysics, Perelman School of Medicine at the 8 University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA 19104, USA 9 3Department of Biodiversity Earth and Environmental Sciences, Drexel University, PA 19104, 10 USA 11 4Department of Biology, Florida International University, 11200 SW 8th St, Miami, FL 33199 12 5Department of Botany, Academy of Natural Sciences of Drexel University, 1900 Benjamin 13 Franklin Parkway, Philadelphia PA, 19103, USA 14 Email addresses: 15 LAB:
[email protected] 16 JAT:
[email protected] 17 HAS:
[email protected] 18 CRS:
[email protected] 19 SK:
[email protected] 20 TL:
[email protected] 21 KPCM:
[email protected] 22 * Authors for correspondence:
[email protected] and
[email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.08.23.260091; this version posted August 24, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity.