1H-indazol-3-amine → [2-(2-Chloro-phenyl)-pyrido[3,4-d]pyrimidin-4-yl]-(1H-indazol-3-yl)-amine

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Prepared from 4-Chloro-2-(2-chloro-phenyl)-pyrido[3,4-d]pyrimidine (100 mg, 0.36 mmol) and 1H-indazol-3-ylamine (88 mg, 0.66 mmol) Purification by preparative HPLC afforded the title compound as a yellow, di-TFA salt (72 mg, 33% yield). HPLC-Method A, Rt 3.21 min; 1H NMR (DMSO, 500 MHz): δ 12.95 (1H, s), 10.90 (1H, bs), 9.25 (1H, s), 8.75 (1H, m), 8.55 (1H, m), 7.65 (1H, m), 7.55 (1H, m), 7.50–7.30 (5H, m), 7.00(1H, m); MS (m/z), MH+ 373.1.

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