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• W2891850968 abstract "Synthetic routes to potent bicyclic nonsteroidal sulfamate-based active-site-directed inhibitors of the enzyme steroid sulfatase (STS), an emerging target in the treatment of postmenopausal hormone-dependent diseases, including breast cancer, are described. Sulfamate analogs 9–27 and 28–46 of the core in vivo active two-ring coumarin template, modified at the 4- and 3-positions, respectively, were synthesized to expand structure–activity relationships. α-Alkylacetoacetates were used to synthesize coumarin sulfamate derivatives with 3-position modifications, and the bicyclic ring of other parent coumarins was primarily constructed via the Pechmann synthesis of hydroxyl coumarins. Compounds were examined for STS inhibition in intact MCF-7 breast cancer cells and in placental microsomes. Low nanomolar potency STS inhibitors were achieved, and some were found to inhibit the enzyme in MCF-7 cells ca. 100–500 more potently than the parent 4-methylcoumarin-7-O-sulfamate 3, with the best compounds close in potency to the tricyclic clinical drug Irosustat. 3-Hexyl-4-methylcoumarin-7-O-sulfamate 29 and 3-benzyl-4-methylcoumarin-7-O-sulfamate 41 were particularly effective inhibitors with IC50 values of 0.68 and 1 nM in intact MCF-7 cells and 8 and 32 nM for placental microsomal STS, respectively. They were docked into the STS active site for comparison with estrone 3-O-sulfamate and Irosustat, showing their sulfamate group close to the catalytic hydrated formylglycine residue and their pendant group lying between the hydrophobic sidechains of L103, F178, and F488. Such highly potent STS inhibitors expand the structure–activity relationship for these coumarin sulfamate-based agents that possess therapeutic potential and may be worthy of further development." @default.
• W2891850968 created "2018-09-27" @default.
• W2891850968 creator A5004708346 @default.
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• W2891850968 date "2018-09-06" @default.
• W2891850968 modified "2023-10-11" @default.
• W2891850968 title "C-3- and C-4-Substituted Bicyclic Coumarin Sulfamates as Potent Steroid Sulfatase Inhibitors" @default.
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• W2891850968 doi "https://doi.org/10.1021/acsomega.8b01383" @default.
• W2891850968 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6173509" @default.
• W2891850968 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30320251" @default.
• W2891850968 hasPublicationYear "2018" @default.
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