iboxamycin   Click here for help

GtoPdb Ligand ID: 11790

Synonyms: IBX | OPP-3
Compound class: Synthetic organic
Comment: Iboxamycin (OPP-3) is an orally bioavailable, synthetic antibacterial compound [1]. Structurally, IBX is built on a oxepanoproline scaffold that is linked to the aminooctose residue of clindamycin. X-ray crystallography shows that IBX binds to the large ribosomal subunit in the bacteria (more effectively than clindamycin) and disrupts translation initiation. Iboxamycin is a novel broad-spectrum agent that is active against Gram-positive and Gram-negative bacteria including ESKAPE pathogens that express resistance-conferring Erm and Cfr ribosomal RNA methyltransferase enzymes.
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 8
Hydrogen bond donors 5
Rotatable bonds 8
Topological polar surface area 145.58
Molecular weight 494.22
XLogP 2.71
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES CSC1O[C@@H]([C@@H]([C@@H](Cl)C)NC(=O)[C@H]2NC[C@H]3[C@H]2OCC[C@H](C3)CC(C)C)C([C@H]([C@H]1O)O)O
Isomeric SMILES [C@H]12CN[C@H](C(=O)N[C@H]([C@H](C)Cl)[C@@H]3OC(SC)[C@H](O)[C@H](O)C3O)[C@@H]1OCC[C@@H](CC(C)C)C2
InChI InChI=1S/C22H39ClN2O6S/c1-10(2)7-12-5-6-30-19-13(8-12)9-24-15(19)21(29)25-14(11(3)23)20-17(27)16(26)18(28)22(31-20)32-4/h10-20,22,24,26-28H,5-9H2,1-4H3,(H,25,29)/t11-,12-,13-,14+,15-,16+,17?,18+,19+,20-,22?/m0/s1
InChI Key JPCLUJPDWMBCAA-ALYUFWCISA-N
Bioactivity Comments
Iboxamycin (OPP-3) is active against a wide range of antibacterial resistant bacterial strains, including multidrug-resistant strains of S. aureus, E. faecalis, E. coli, K. pneumoniae and A. baumannii [1]. For example, IBX's MIC50 against a strain of E. coli that's resistant to cephalosporin, fluoroquinolone, tetracycline and aminoglycoside antibacterials is  8 μg/ml.