Title: Choi SJ, et al. Indirubin derivatives as potent FLT3 inhibitors with anti-proliferative activity of acute myeloid leukemic cells. Bioorg Med Chem Lett. 2010 Mar 15;20(6):2033-7.
Title: Kim SA, et al. Antitumor activity of novel indirubin derivatives in rat tumor model. Clin Cancer Res. 2007 Jan 1;13(1):253-9.