Bioorganic Chemistry p. 123 - 128 (2019)
Update date:2022-08-23
Topics:
Fattah, Tanzeela Abdul
Bua, Silvia
Saeed, Aamer
Shabir, Ghulam
Supuran, Claudiu T.
We describe the synthesis of a series of novel 1-aroyl/acyl-3-(3-aminosulfonylphenyl) thioureas (4a–k) acting as human carbonic anhydrase (hCA, EC 4.2.1.1) inhibitors. Reaction of alkyl/aryl isothiocyanates with 3-aminobenzenesulfonamide afforded a series of the title compounds incorporating a variety of short as well as highly lipophilic long tails. The newly synthesized sulfonamides were evaluated against 4 physiologically relevant CA isoforms (hCA I, II, IV, and IX). Several compounds showed interesting inhibitory activity. The tumor-associated hCA IX was the most sensitive isoform to inhibition with these compounds, with KIs in the range of 21.5–44.0 nM and selectivity ratios over the major cytosolic isoform hCA II in the range of 3.35–37.3. The sulfonamides incorporating the phenylacetylthioureido and pentadecanoylthioureido moieties were the most hCA IX-selective inhibitors detected in this work, making them of interest for further investigations.
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