Add time:07/16/2019         Source:sciencedirect.com

A series of novel (3′-amino-[1,1′-biphenyl]-4-yl) sulfamic acid derivatives were designed as nonphosphonate-based phosphotyrosy (pTyr) mimetics, synthesized and screened for use as HPTPβ inhibitors. Compounds C22 and C2 showed favorable HPTPβ inhibitory activity and better selectivity for HPTPβ than for PTP1B and SHP2. Docking results suggested that compounds C2 and C22 could not only efficiently fit into the catalytic site of the HPTPβ enzyme but also interact with the Lys1807, Arg1809 and Lys1811 residues of the secondary binding site, which was next to the catalytic center of the enzyme. The mode of interaction of the synthesized compound with the protein was different from the one found in a complex crystal of small molecules with HPTPβ (2I4H), in which the inhibitory molecule formed hydrogen bonds with the Gln1948 and Asn1735 residues of the secondary binding site.

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