Table 1. Trp23 Substitution Structure–Activity Relationshipsa.
Biochemical p53-HDM2 binding fluorescent polarization (FP) assay and antiproliferative osteosarcoma SJSA-1 assay results for compounds 3–14. Fluorescence polarization (FP) peptide displacement assay value was determined as described in Zhang et al.15 For comparison Nutlin-3a fluorescence polarization (FP) peptide displacement IC50 assay value obtained in house was 0.07 μM. In our antiproliferative assay, Nutlin-3a had an IC50 value of 1.9 μM using osteosarcoma SJSA-1 cells.
Racemic mixture.
Allyl group at position 2 of piperidine.
Phenoxybutanoic acid side chain.