Synthesis of 6-tetrazolyl-substituted sulfocoumarins acting as highly potent and selective inhibitors of the tumor-associated carbonic anhydrase isoforms IX and XII
摘要:
A series of 6-substituted sulfocoumarins incorporating substituted-1,2,3,4-tetrazol-5-yl moieties were synthesized by reaction of 6-iodo-sulfocoumarin and the corresponding tetrazole via the CH activation reaction. The new sulfocoumarins incorporating alkyl and substituted aryl moieties at the 1-position of the tetrazole, were investigated for the inhibition of four human (h) carbonic anhydrase (hCA, EC 4.2.1.1) isoforms, the cytosolic hCA I and II; and the transmembrane, tumor-associated hCA IX and XII. The tetrazole-substituted sulfocoumarins did not inhibit the ubiquitous, off-target cytosolic isoforms (K(I)s > 10 mu M) but showed effective inhibition against the two transmembrane CAs, with KIs ranging from 6.5 to 68.6 nM against hCA IX, and between 4.3 and 59.8 nM against hCA XII. As hCA IX and XII are validated anti-tumor targets, such prodrug, isoform-selective inhibitors as the sulfocoumarins reported here, may be useful for identifying suitable drug candidates for clinical trials. (C) 2014 Elsevier Ltd. All rights reserved.
Sulfocoumarins as dual inhibitors of human carbonic anhydrase isoforms IX/XII and of human thioredoxin reductase
作者:Mikhail Krasavin、Raivis Žalubovskis、Aiga Grandāne、Ilona Domračeva、Petr Zhmurov、Claudiu T. Supuran
DOI:10.1080/14756366.2020.1712596
日期:2020.1.1
acting as inhibitors of human carbonic anhydrase (CA, EC 4.2.1.1) cancer-associated isoforms hCA IX and - hCA XII is being able to also inhibitthioredoxinreductase was verified and confirmed. The dual targeting of two cancercell defence mechanisms, i.e. hypoxia and oxidative stress, may both contribute to the observed antiproliferative profile of these compounds against many cancercell lines. This