4.7 Article

Potent Non-Benzoquinone Ansamycin Heat Shock Protein 90 Inhibitors from Genetic Engineering of Streptomyces hygroscopicus

Journal

JOURNAL OF MEDICINAL CHEMISTRY
Volume 52, Issue 6, Pages 1518-1521

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jm900012a

Keywords

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Funding

  1. National Institutes of Health [5R44 CA096262-03]

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Inhibition of the protein chaperone Hsp90 is a promising new approach to cancer therapy. We describe the preparation of potent non-benzoquinone ansamycins. One of these analogues, generated by feeding 3-amino-5-chlorobenzoic acid to a genetically engineered strain of Streptomyces hygroscopicus, shows high accumulation and long residence time in tumor tissue, is well-tolerated upon intravenous dosing, and is highly efficacious in the COLO205 mouse tumor xenograft model.

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