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pubmed:abstractText |
Fmoc-pSer-Psi[(Z)CHC]-Pro-(2)-N-(3)-ethylaminoindole 1, showed moderate inhibition towards the mitotic regulator, Pin1 (IC(50)=28.3microM). To improve the cell permeability, the charged phosphate was masked as the bis-pivaloyloxymethyl (POM) phosphate in Fmoc-(bisPOM)-pSer-Psi[(Z)CHC]-Pro-(2)-N-(3)-ethylaminoindole 2. Antiproliferative activity towards A2780 ovarian cancer cells of 1 (IC(50)=46.2microM) was improved significantly in 2 (IC(50)=26.9microM), comparable to the IC(50) of 1 towards Pin1 enzymatic activity.
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