- PMID:
21715165
- Authors:
- Zapf CW, Bloom JD, Li Z, Dushin RG, Nittoli T, Otteng M, Nikitenko A, Golas JM, Liu H, Lucas J, Boschelli F, Vogan E, Olland A, Johnson M, Levin JI
- Title:
- Discovery of a stable macrocyclic o-aminobenzamide Hsp90 inhibitor which significantly decreases tumor volume in a mouse xenograft model.
- Journal:
- Bioorg Med Chem Lett. 2011 Jun 27.
- 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.