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CHIR-090 728865-23-4
CHIR-090 is a very potent, low, tight-binding inhibitor of LpxC with Ki value of 4.0 nM [1].
LpxC is a zinc-dependent amidase and present in almost all Gram-negative bacteria. LpxC is a promising target for the development of novel antibiotic substances against multigrug-resistant Gram-negative bacteria [2].
| Cas No. | 728865-23-4 | ||
| Synonyms | CHIR 090;CHIR090 | ||
| Chemical Name | N-[(2S,3R)-3-hydroxy-1-(hydroxyamino)-1-oxobutan-2-yl]-4-[2-[4-(morpholin-4-ylmethyl)phenyl]ethynyl]benzamide | ||
| Canonical SMILES | CC(C(C(=O)NO)NC(=O)C1=CC=C(C=C1)C#CC2=CC=C(C=C2)CN3CCOCC3)O | ||
| Formula | C24H27N3O5 | M.Wt | 437.49 |
| Solubility | ≥ 21.85 mg/mL in DMSO | Storage | Store at -20°C |
CHIR-090 is a potent LpxC inhibitor and has a different selectivity with the reported LpxC inhibitor L-161. When tested with Escherichia coli LpxC, administration of CHIR-090 showed tight inhibition with Ki value of 4.0 nM, Ki*=0.5 nM, K5=1.9/min and K6=0.18/min [1]. In bacterial P.aeruginosa efflux pupm mutants, CHIR-090 treatment showed inhibition function on MexAB-Oprm, MexCD-OprJ and MexEF-OprN [2]. CHIR-090 showed remarkable antibiotic activity against both E.coli and P.aeruginosa by inhibiting LpxC orthologs at low nM concentrations [3].
In E.coli W3110RL with R.legumunosarum lpxC replacement of E.coli lpxC, CHIR-090 (1 to 10 μg/ml) treatment had no effect on strain growth on LB agar plates while wild-type cells stopped growing after about 2 h in the presence of 1 μg/ml CHIR-090 [1].
References:
[1].Barb, A.W., et al., Inhibition of lipid A biosynthesis as the primary mechanism of CHIR-090 antibiotic activity in Escherichia coli. Biochemistry, 2007. 46(12): p. 3793-802.
[2].Barb, A.W. and P. Zhou, Mechanism and inhibition of LpxC: an essential zinc-dependent deacetylase of bacterial lipid A synthesis. Curr Pharm Biotechnol, 2008. 9(1): p. 9-15.
[3].McClerren, A.L., et al., A slow, tight-binding inhibitor of the zinc-dependent deacetylase LpxC of lipid A biosynthesis with antibiotic activity comparable to ciprofloxacin. Biochemistry, 2005. 44(50): p. 16574-83.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.