Reynosin and santamarine: two sesquiterpene lactones from Ambrosia confertiflora with bactericidal activity against clinical strains of mycobacterium tuberculosis - Coronado-Acevesa, E W; Velazques, C; Robles-Zepeda, R E; Jimenez-Estrada, M; Hernandez-Martinez, J; Galvez-Ruiz, J C; Garibay-Escobar, A (Pharm Biol, 2016)