[Show abstract][Hide abstract] ABSTRACT: Seventeen α-aminophosphonates are synthesized. Their compositions and structures are established by EA, UV, FT-IR, (1)H NMR, (13)C NMR, (31)P NMR and ESI-MS. Compounds 1-4 are confirmed by X-ray crystallography. PTP inhibition shows compounds 1-5, 12, 15 are moderate competitive inhibitors with some selectivity. The most potent inhibitor is compound 5 with the lowest IC(50) value about 6.64 μM against PTP1B, about 2-fold and 25-fold stronger than against TCPTP and PTP-MEG2 while it doesn't inhibit SHP-1 and SHP-2. The binding constant of 5 to PTP1B is 2.23 × 10(5) M(-1) and binding ratio approximates 1:1. Cell viability and apoptosis assays indicate 5 is cell permeable with lower cytotoxicity. The results indicate α-aminophosphonates are possibly developed to effective and selective inhibitors of PTPs.
Full-text · Article · Mar 2012 · European Journal of Medicinal Chemistry
[Show abstract][Hide abstract] ABSTRACT: A dinuclear Cu(II) complex, [Cu(2)(μ-IDA)(phen)(3)(NO(3))]NO(3)·4H(2)O (phen = 1,10-phenanthroline, H(2)IDA = iminodiacetic acid), was found to potently and selectively inhibit T-cell protein tyrosine phosphatase, and lead to the anti-proliferation and apoptosis of C6 glioma cells.
Full-text · Article · Dec 2011 · Chemical Communications