Potent benzimidazole sulfonamide protein tyrosine phosphatase 1B inhibitors containing the heterocyclic (S)-isothiazolidinone phosphotyrosine mimetic.

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Combs AP, Zhu W, Crawley ML, Glass B, Polam P, Sparks RB, Modi D, Takvorian A, McLaughlin E, Yue EW, Wasserman Z, Bower M, Wei M, Rupar M, Ala PJ, Reid BM, Ellis D, Gonneville L, Emm T, Taylor N, Yeleswaram S, Li Y, Wynn R, Burn TC, Hollis G, Liu PC, Metcalf B

Potent benzimidazole sulfonamide protein tyrosine phosphatase 1B inhibitors containing the heterocyclic (S)-isothiazolidinone phosphotyrosine mimetic.

J Med Chem. 2006 Jun 29;49(13):3774-89.

PubMed ID

16789735 [ View in PubMed

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Abstract

Potent nonpeptidic benzimidazole sulfonamide inhibitors of protein tyrosine phosphatase 1B (PTP1B) were derived from the optimization of a tripeptide containing the novel (S)-isothiazolidinone ((S)-IZD) phosphotyrosine (pTyr) mimetic. An X-ray cocrystal structure of inhibitor 46/PTP1B at 1.8 A resolution demonstrated that the benzimidazole sulfonamides form a bidentate H bond to Asp48 as designed, although the aryl group of the sulfonamide unexpectedly interacts intramolecularly in a pi-stacking manner with the benzimidazole. The ortho substitution to the (S)-IZD on the aryl ring afforded low nanomolar enzyme inhibitors of PTP1B that also displayed low caco-2 permeability and cellular activity in an insulin receptor (IR) phosphorylation assay and an Akt phosphorylation assay. The design, synthesis, and SAR of this novel series of benzimidazole sulfonamide containing (S)-IZD inhibitors of PTP1B are presented herein.

DrugBank Data that Cites this Article

Binding Properties

Drug	Target	Property	Measurement	pH	Temperature (°C)
ISOTHIAZOLIDINONE ANALOG	Tyrosine-protein phosphatase non-receptor type 1	IC 50 (nM)	240	N/A	N/A	Details