A phosphorylated prodrug for the inhibition of Pin1
摘要:
Fmoc-pSer-psi[(Z)CH = C]-Pro-(2)-N-(3)-ethylaminoindole 1, showed moderate inhibition towards the mitotic regulator, Pin1 (IC50 = 28.3 mu M). To improve the cell permeability, the charged phosphate was masked as the bis-pivaloyloxymethyl (POM) phosphate in Fmoc-(bisPOM)-pSer-psi[(Z)CH = C]-Pro-(2)-N-(3)-ethylaminoindole 2. Antiproliferative activity towards A2780 ovarian cancer cells of 1 (IC50 = 46.2 mu M) was improved significantly in 2 (IC50 = 26.9 mu M), comparable to the IC50 of 1 towards Pin1 enzymatic activity. (c) 2007 Elsevier Ltd. All rights reserved.
Ac-Phe-Tyr-phosphoSer-Ψ[CH═C]-Pro-Arg-NH
2
AND Fmoc-bis(pivaloylmethoxy)phosphoSer-Ψ[CH═C]-Pro-2-aminoethyl-(3-indole); and their Phospho-(D)-serine stereoisomers are novel compounds. Ψ refers to a pseudo amide. Such novel compounds advantageously may be used as alkene mimics.