(E,E)-GLL398

(E,E)-GLL398 is a selective estrogen receptor degrader with potent binding activity to ERα (IC50 = 1.14 nM). (E,E)-GLL398 can effectively degrade ERα in MCF-7 breast cancer cells (IC50 = 0.21 μM). The introduced boronic acid group of (E,E)-GLL398 gives it superior oral bioavailability, with an AUC of 36.9 μg·h/mL in rats, which is significantly higher than that of GW7604.