Synthesis and antimycobacterial activity of prodrugs of sulfur dioxide (SO2)
摘要:
Here, we synthesized and studied a library of 2,4-dinitrophenylsulfonamides that closely resembled N-benzyl-2,4-dinitrophenylsulfonamide (1), a thiol-activated prodrug of sulfur dioxide (SO2) which has shown high potency as a Mycobacterium tuberculosis (Mtb) inhibitory agent. The ability of these compounds to generate SO2 in the presence of a thiol was evaluated. A good correlation between pK(aH) of the corresponding amine and reactivity with thiols to generate SO2 was found suggesting that the rate determining step of SO2 generation involved protonation of the amine. Amongst analogues with measurable MICs, we also found a correlation between ability to generate SO2 and Mtb growth inhibitory activity. Together, we report several thiol-mediated prodrugs of SO2 which strongly inhibited Mtb growth (MIC < 1 mu g mL(-1)) with potential for further development as tuberculosis drug candidates. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis and antimycobacterial activity of prodrugs of sulfur dioxide (SO2)
摘要:
Here, we synthesized and studied a library of 2,4-dinitrophenylsulfonamides that closely resembled N-benzyl-2,4-dinitrophenylsulfonamide (1), a thiol-activated prodrug of sulfur dioxide (SO2) which has shown high potency as a Mycobacterium tuberculosis (Mtb) inhibitory agent. The ability of these compounds to generate SO2 in the presence of a thiol was evaluated. A good correlation between pK(aH) of the corresponding amine and reactivity with thiols to generate SO2 was found suggesting that the rate determining step of SO2 generation involved protonation of the amine. Amongst analogues with measurable MICs, we also found a correlation between ability to generate SO2 and Mtb growth inhibitory activity. Together, we report several thiol-mediated prodrugs of SO2 which strongly inhibited Mtb growth (MIC < 1 mu g mL(-1)) with potential for further development as tuberculosis drug candidates. (C) 2012 Elsevier Ltd. All rights reserved.
Thiol activated prodrugs of sulfur dioxide (SO2) as MRSA inhibitors
作者:Kundansingh A. Pardeshi、Satish R. Malwal、Ankita Banerjee、Surobhi Lahiri、Radha Rangarajan、Harinath Chakrapani
DOI:10.1016/j.bmcl.2015.04.046
日期:2015.7
are becoming common worldwide and new strategies for drug development are necessary. Here, we report the synthesis and evaluation of 2,4-dinitrophenylsulfonamides, which are donors of sulfur dioxide (SO2), a reactive sulfur species, as methicillin-resistant Staphylococcus aureus (MRSA) inhibitors. N-(3-Methoxyphenyl)-2,4-dinitro-N-(prop-2-yn-1-yl)benzenesulfonamide (5e) was found to have excellent in
THIOL MEDIATED/ACTIVATED PRODRUGS OF SULFUR DIOXIDE (SO2) HAVING ANTI-BACTERIAL ACTIVITY
申请人:INDIAN INSTITUTE OF SCIENCE EDUCATION AN
公开号:US20140121211A1
公开(公告)日:2014-05-01
Disclosed herein are thiol mediated/activated prodrugs of SO
2
, particularly 2,4-dinitrophenylsulfonamide analogues, having Formula-I or pharmaceutically acceptable salts thereof exhibiting tunable release profiles of SO
2
with significant therapeutic efficacy against bacterial infections. Further, the present invention provides pharmaceutical compositions comprising compound of Formula I or pharmaceutically acceptable salts thereof, along with pharmaceutically acceptable carriers/excipients.