4FC0:
reference: Design and synthesis of novel DFG-out RAF/vascular endothelial growth factor receptor 2 (VEGFR2) inhibitors: 3. Evaluation of 5-amino-linked thiazolo[5,4-d]pyrimidine and thiazolo[5,4-b]pyridine derivatives., Hirose M, Okaniwa M, Miyazaki T, Imada T, Ohashi T, Tanaka Y, Arita T, Yabuki M, Kawamoto T, Tsutsumi S, Sumita A, Takagi T, Sang BC, Yano J, Aertgeerts K, Yoshida S, Ishikawa T, Bioorg Med Chem. 2012 Sep 15;20(18):5600-15. doi: 10.1016/j.bmc.2012.07.032. Epub, 2012 Jul 23. PMID: 22883026

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