Fascaplysin
Fascaplysin is an antimicrobial and cytotoxic red pigment, that can come from the marine sponge (Fascaplysinopsis sp.). Fascaplysin has been synthesized in seven steps from indole (65% yield). Fascaplysin can induces apoptosis and autophagy in human leukemia HL-60 cells. Fascaplysin shows anti-tumor activity[1][2].