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Cresomycin

Chemical Structure : Cresomycin

CAS No.: 2999743-51-8

Cresomycin (CRM)

Catalog No.: PC-21855Not For Human Use, Lab Use Only.

Cresomycin (CRM) is a bridged macrobicyclic antibiotic via inhibiting bacterial ribosome, shows broad efficacy of CRM against clinical isolates of MDR Gram-negative pathogens differentiates the synthetic macrobicyclic class from traditional lincosamides.

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Purity & Documentation Purity: >98% (HPLC)

Biological Activity

Cresomycin (CRM) is a bridged macrobicyclic antibiotic via inhibiting bacterial ribosome, shows broad efficacy of CRM against clinical isolates of MDR Gram-negative pathogens differentiates the synthetic macrobicyclic class from traditional lincosamides.
Cresomycin (CRM) is broadly superior to Iboxamycin (IBX) in inhibiting the growth of staphylococci (MIC90= 2 versus 8 ug/ml), streptococci MIC90 ≤ 0.06 versus 0.25 μg/ml), enterococci (MIC90 = 0.25 versus 2 μg/m), and Clostridioides difficile (MIC90= 0.125 versus 16 ug/ml).
Cresomycin (CRM) (25 mg/kg, q.i.d., i.p.) reduces the bacterial burden of cfr-expressing S. aureus, ermA-expressing S. aureus (AR-0693), carbapenem-resistant E. coli (AR-0137), and carbapenem-resistant P. aeruginosa (AR-0236) by -4.6, -2.2, -2.6, and -2.7 log10 CFUs, respectively.
Cresomycin (CRM) displaced 50% of bound radiolabeled erythromycin from immobilized E. coli ribosomes IC50 of ≤8.2 nM.
Cresomycin (CRM) exhibits in vitro and in vivo efficacy against both Gram-positive and Gram-negative bacteria, including multidrug-resistant strains of Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa.

Physicochemical Properties

M.Wt 498.68
Formula C25H42N2O6S
Appearance Solid
CAS No.
Storage
Solide Powder
-20°C 12 Months; 4°C 6 Months
In Solvent
-80°C 6 Months; -20°C 6 Months
Shipping
Solubility

10 mM in DMSO

Chemical Name/SMILES

(4S,5aS,8S,8aR)-4-isobutyl-N-((1R,7R,8R,9R,10R,11S,12R,Z)-10,11,12-trihydroxy-7-methyl-13-oxa-2-thiabicyclo[7.3.1]tridec-5-en-8-yl)octahydro-2H-oxepino[2,3-c]pyrrole-8-carboxamide

References

1. Kelvin J Y Wu, et al. Science. 2024 Feb 16;383(6684):721-726.

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