Eribulin

Eribulin is a synthetic analogue of the macrocyclic polyether halichondrin B, which was originally isolated from the Asian sea sponge Halichondria okadai. Eribulin binds specifically to the β-tubulin subunit on the (+) end of the microtubule and potently inhibits elongation of the formed microtubule, while having little or no effect on microtubule depolymerization. Eribulin's potent antimitotic activity and nonmitotic effects on tumor biology make it an interesting candidate for investigation as a MTA payload for ADCs.