New Cathepsin D Inhibitorswith Hydroxyethylamine Isosteres: Preparation and Characterization

Author(s): S. E. Hatfield, W. E. Godwin, K. Sayyar, J. F. Lindley, A. W. Green, C. J. Trana, M. S. McConnell, R. M. McConnell.

Journal Name: Medicinal Chemistry

Volume 2 , Issue 1 , 2006

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Abstract:

The lysosomal aspartyl protease, cathepsin D, has been suggested to play a role in the metastatic potential of several types of cancer. Cathepsin D is secreted by malignant cells, and is believed to be involved in the breakdown of the extracellular matrix. High levels of active cathepsin D have been found in colon cancer, prostate cancer, uterine cancer and ovarian cancer. Also cathepsin D has recently been associated with the development of Alzheimers disease. Hydroxyethyl isosteres with cyclic tertiary amine have proven to be clinically useful as inhibitors of aspartyl proteases similar to cathepsin D in activity, such as the HIV-1 aspartyl protease. In the present study twenty-eight compounds containing (hydroxyethyl)amine isosteres with cyclic tertiary amines have been synthesized. These compounds show significant activity as cathepsin D inhibitors, many with IC50 values in the nanomolar range. For example, the compounds that contain hydroxyethylamines where the amine is formed from N-piperazine-2-carboxylic acid methyl ester, 4y-bb, show IC50 values ranging from 2.5 to 15 nM.

Keywords: NMR, column chromatography, N-phenylpiperazine, HIV-1 protease, combinatorial library, BOC protecting group

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Article Details

VOLUME: 2
ISSUE: 1
Year: 2006
Page: [27 - 38]
Pages: 12
DOI: 10.2174/157340606775197705

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