During our effort to develop dual VEGFR2 and Tie-2 inhibitors as anti-angiogenic agents for cancer therapy, we discovered 4-amino-5-(4-((2-fluoro-5-(trifluoromethyl)phenyl)-aminocarbonylamino)phenyl)furo[2,3-d]pyrimidine (8a) possessing strong inhibitory activity at both the enzyme and cellular level against VEGFR2 and Tie-2. Compound 8a demonstrated high pharmaco-kinetic exposure through oral administration, and showed marked tumor growth inhibition and anti-angiogenic activity in mouse HT-29 xenograft model via once-daily oral administration. (c) 2006 Elsevier Ltd. All rights reserved.