Methyl 4-bromopyrrole-2-carboxylate is a marine derived natural products found in Lissodendoryx sp.

QS-21, an immunostimulatory saponin, is a powerful vaccine adjuvant that stimulates both Th2 humoral and Th1 cell-mediated immune responses by interacting with antigen presenting cells (APCs) and T cells.

β-Carboline-1-propionic acid is a alkaloid which can be extracted from Ailanthus altissima. β-Carboline-1-propionic acid can be used as an antileishmanial agent.