Discovery of EBI-907: A highly potent and orally active B-Raf(V600E) inhibitor for the treatment of melanoma and associated cancers
- Bioorg Med Chem Lett. 2016 Feb 1;26(3):819-823. doi: 10.1016/j.bmcl.2015.12.086.
- 1. Shanghai Hengrui Pharmaceutical Co., Ltd, 279 Wenjing Rd, Minhang Hi-tech Zone, Shanghai 200245, China.
- 2. Eternity Bioscience Inc., 2005 EastPark Blvd, Cranbury, NJ 08512, USA.
- 3. National Engineering and Research Center for Targeted Drugs, Jiangsu Hengrui Medicine Co., Ltd, 7 Kunlun Shan Road, Lianyungang Economic and Technology Development Zone, Jiangsu Province, China.
A novel series of pyrazolo[3,4-c]isoquinoline derivatives was discovered as B-Raf(V600E) inhibitors through scaffold hopping based on a literature lead PLX4720. Further SAR exploration and optimization led to the discovery of potent B-Raf(V600E) inhibitors with good oral bioavailability in rats and dogs. One of the compounds EBI-907 (13g) demonstrated excellent in vivo efficacy in B-Raf(V600E) dependent Colo-205 tumor xenograft models in mouse and is under preclinical studies for the treatment of melanoma and B-Raf(V600E) associated cancers.