Download MendeleyDiscovery of a stable macrocyclic o-aminobenzamide Hsp90 inhibitor which significantly decreases tumor volume in a mouse xenograft model.
Zapf, C.W., Bloom, J.D., Li, Z., Dushin, R.G., Nittoli, T., Otteng, M., Nikitenko, A., Golas, J.M., Liu, H., Lucas, J., Boschelli, F., Vogan, E., Olland, A., Johnson, M., Levin, J.I.(2011) Bioorg Med Chem Lett 21: 4602-4607
- PubMed: 21715165
- DOI: https://doi.org/10.1016/j.bmcl.2011.05.102
- Primary Citation of Related Structures:
3RKZ - PubMed Abstract:
An extension of our previously reported series of macrocyclic ortho-aminobenzamide Hsp90 inhibitors is reported. Addition of a second methyl group to the tether provided analogs that show increased potency in binding as well as cell-proliferation assays and, more importantly, are stable toward microsomes. We wish to disclose the discovery of a macrocycle which showed impressive biomarker activity 24-h post dosing and which demonstrated prolonged exposure in tumors. When studied in a lung cancer xenograft model, the compound demonstrated significant tumor size reduction.
Organizational Affiliation:
Medicinal Chemistry, Pfizer, Pearl River, NY 10965, United States. christoph.zapf@pfizer.com
