BTZ043 - CAS 1161233-85-7
Catalog number:
1161233-85-7
Category:
Inhibitor
Not Intended for Therapeutic Use. For research use only.
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Targets:
Others
Description:
The new antitubercular drug candidate 2-[2-S-methyl-1,4-dioxa-8-azaspiro[4.5]dec-8-yl]-8-nitro-6-(trifluoromethyl)-4H-1,3-benzothiazin-4-one (BTZ043) targets the DprE1 (Rv3790) subunit of the enzyme decaprenylphosphoryl-beta-d-ribose 2'-epimerase. To monitor the potential development of benzothiazinone (BTZ) resistance, a total of 240 sensitive and multidrug-resistant Mycobacterium tuberculosis clinical isolates from four European hospitals were surveyed for the presence of mutations in the dprE1 gene and for BTZ susceptibility. All 240 strains were susceptible, thus establishing the baseline prior to the introduction of BTZ043 in clinical trials.
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Synonyms:
BZT043; 2-[2-S-methyl-1,4-dioxa-8-azaspiro[4.5]dec-8-yl]-8-nitro-6-(trifluoromethyl)-4H-1,3-benzothiazin-4-one.
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Current Developer:
the EPFL School of Life Sciences,
1.Tuberculosis: clinical trials and new drug regimens.
Kwon YS1, Jeong BH, Koh WJ. Curr Opin Pulm Med. 2014 May;20(3):280-6. doi: 10.1097/MCP.0000000000000045.
PURPOSE OF REVIEW: Recent advances in the development of new drugs and regimens provide hope that well tolerated, effective, and shorter-duration treatments for tuberculosis (TB) will become available. This review covers the recent trials of new TB drugs and regimens.
2.In Vivo Activity of the Benzothiazinones PBTZ169 and BTZ043 against Nocardia brasiliensis.
González-Martínez NA1, Lozano-Garza HG2, Castro-Garza J2, De Osio-Cortez A1, Vargas-Villarreal J2, Cavazos-Rocha N3, Ocampo-Candiani J1, Makarov V4, Cole ST5, Vera-Cabrera L1. PLoS Negl Trop Dis. 2015 Oct 16;9(10):e0004022. doi: 10.1371/journal.pntd.0004022. eCollection 2015.
BACKGROUND: Mycetoma is a neglected, chronic, and deforming infectious disease caused by fungi and actinomycetes. In Mexico, N. brasiliensis is the predominant etiologic agent. Therapeutic alternatives are necessary because the current drug regimens have several disadvantages. Benzothiazinones (BTZ) are a new class of candidate drugs that inhibit decaprenyl-phosphoribose-epimerase (DprE1), an essential enzyme involved in the cell wall biosynthesis of Corynebacterineae.
3.Structure, dynamics, and interaction of Mycobacterium tuberculosis (Mtb) DprE1 and DprE2 examined by molecular modeling, simulation, and electrostatic studies.
Bhutani I1, Loharch S1, Gupta P1, Madathil R1, Parkesh R1. PLoS One. 2015 Mar 19;10(3):e0119771. doi: 10.1371/journal.pone.0119771. eCollection 2015.
The enzymes decaprenylphosphoryl-β-D-ribose oxidase (DprE1) and decaprenylphosphoryl-β-D-ribose-2-epimerase (DprE2) catalyze epimerization of decaprenylphosporyl ribose (DPR) todecaprenylphosporyl arabinose (DPA) and are critical for the survival of Mtb. Crystal structures of DprE1 so far reported display significant disordered regions and no structural information is known for DprE2. We used homology modeling, protein threading, molecular docking and dynamics studies to investigate the structural and dynamic features of Mtb DprE1 and DprE2 and DprE1-DprE2 complex. A three-dimensional model for DprE2 was generated using the threading approach coupled with ab initio modeling. A 50 ns simulation of DprE1 and DprE2 revealed the overall stability of the structures. Principal Component Analysis (PCA) demonstrated the convergence of sampling in both DprE1 and DprE2. In DprE1, residues in the 269-330 area showed considerable fluctuation in agreement with the regions of disorder observed in the reported crystal structures.
4.Design and Syntheses of Anti-Tuberculosis Agents Inspired by BTZ043 Using a Scaffold Simplification Strategy.
Tiwari R1, Möllmann U2, Cho S3, Franzblau SG3, Miller PA1, Miller MJ1. ACS Med Chem Lett. 2014 Mar 3;5(5):587-91. doi: 10.1021/ml500039g. eCollection 2014.
Tuberculosis (TB), a disease caused by Mycobacterium tuberculosis (Mtb), is a global public health concern because of the emergence of various resistant strains. Benzothiazin-4-ones (BTZs), represented by BTZ043, are a promising new class of agents for the treatment of tuberculosis and have been shown to kill Mtb in vitro, ex vivo, and in mouse models of TB. Herein we report the design and syntheses of nitroaromatic sulfonamide, reverse-amide, and ester classes of anti-TB agents using a scaffold simplification strategy based on BTZ043. The presented work explores the effect of functional groups such as sulfonamides, reverse-amides, and esters that are attached to the nitroaromatic rings on their anti-TB activity. The in vitro activity of the compounds evaluated against the H37Rv strain of Mtb show that nitroaromatic sulfonamides and nitrobenzoic acid esters with two nitro substituents were most active and highlights the importance of the electronic character (electron deficient aromatic ring) of the nitroaromatic ring as a central theme in these types of nitroaromatic anti-TB agents.
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CAS 1161233-85-7 BTZ043

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