1. Academic Validation
  2. Highly potent inhibitors of methionine aminopeptidase-2 based on a 1,2,4-triazole pharmacophore

Highly potent inhibitors of methionine aminopeptidase-2 based on a 1,2,4-triazole pharmacophore

  • J Med Chem. 2007 Aug 9;50(16):3777-85. doi: 10.1021/jm061182w.
Joseph P Marino Jr 1 Paul W Fisher Glenn A Hofmann Robert B Kirkpatrick Cheryl A Janson Randall K Johnson Chun Ma Michael Mattern Thomas D Meek M Dominic Ryan Christina Schulz Ward W Smith David G Tew Thaddeus A Tomazek Jr Daniel F Veber Wenfang C Xiong Yuuichi Yamamoto Keizo Yamashita Guang Yang Scott K Thompson
Affiliations

Affiliation

  • 1 Department of Medicinal Chemistry, Enzymology, Oncology, and Structural Biology, GlaxoSmithkline, King of Prussia, PA 19406, USA. joseph.p.marino@gsk.com
Abstract

High-throughput screening for inhibitors of the human metalloprotease, methionine aminopeptidase-2 (MetAP2), identified a potent class of 3-anilino-5-benzylthio-1,2,4-triazole compounds. Efficient array and interative synthesis of triazoles led to rapid SAR development around the aniline, benzylthio, and triazole moeities. Evaluation of these analogs in a human MetAP2 Enzyme assay led to the identification of several inhibitors with potencies in the 50-100 picomolar range. The deleterious effects on inhibitor potency by methylation of the anilino-triazole nitrogens, as well as the X-ray crystal structure of triazole 102 bound in the active site of MetAP2, confirm the key interactions between the triazole nitrogens, the active site cobalt atoms, and the His-231 side-chain. The structure has also provided a rationale for interpreting SAR within the triazole series. Key aniline (2-isopropylphenyl) and sulfur substituents (furanylmethyl) identified in the SAR studies led to the identification of potent inhibitors (103 and 104) of endothelial cell proliferation. Triazoles 103 and 104 also exhibited dose-dependent activity in an aortic ring tissue model of angiogenesis highlighting the potential utility of MetAP2 inhibitors as Anticancer agents.

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