Lookup NU author(s): Jonathan Hollick,
Professor Bernard Golding,
Dr Ian Hardcastle,
Dr Laurent Rigoreau,
Professor Roger Griffin
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6-Aryl-2-morpholin-4-yl-4H-pyran-4-ones and 6-aryl-2-morpholin-4-yl-4H-thiopyran-4-ones were synthesised and evaluated as potential inhibitors of the DNA repair enzyme DNA-dependent protein kinase (DNA-PK). Several compounds in each series exhibited superior activity to the chromenone LY294002, and were of comparable potency to the benzochromenone NU7026 (IC50=0.23 muM). Importantly, members of both structural classes were found to be selective inhibitors of DNA-PK over related phosphatidylinositol 3-kinase-related kinase (PIKK) family members. A multiple-parallel synthesis approach, employing Suzuki cross-coupling methodology, was utilised to prepare libraries of thiopyran-4-ones with a range of aromatic groups at the 3'- and 4'-positions on the thiopyran-4-one 6-aryl ring. Screening of the libraries resulted in the identification of 6-aryl-2-morpholin-4-yl-4H-thiopyran-4-ones bearing naphthyl or benzo[b]thienyl substituents at the 4'-position, as potent DNA-PK inhibitors with IC50 values in the 0.2-0.4 muM range. (C) 2003 Elsevier Ltd. All rights reserved.
Author(s): Hollick JJ, Golding BT, Hardcastle IR, Martin N, Richardson C, Rigoreau LJM, Smith GCM, Griffin RJ
Publication type: Article
Publication status: Published
Journal: Bioorganic & Medicinal Chemistry Letters
ISSN (print): 0960-894X
ISSN (electronic): 1464-3405
PubMed id: 12941339
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