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Citreamicin alpha (LL-E 19085-alpha) is an antibiotic whose in vitro antimicrobial activity against 429 clinical isolates of Gram-positive cocci has been tested by the agar dilution method. These microorganisms included 313 strains of Staphylococci and 116 strains of Streptococci. The in vitro activity of Citreamicin alpha was compared with that of ampicillin, amoxicillin, ceftriaxone, erythromycin, and vancomycin. For Staphylococci, the MIC values of Citreamicin alpha ranged from 0.12-4.0 μg/ml, and for Streptococcus pyogenes of the genus Streptococcus, it was 0.03-0.12 μg/ml. However, enterococci were relatively resistant, requiring 2.0 μg/ml of the agent to inhibit 64% of the 62 tested strains. The in vitro activity of this antibiotic was much better than that of ampicillin, amoxicillin, ceftriaxone, and erythromycin, but comparable or slightly inferior to that of vancomycin.

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Citreamicin alpha Chemical Structure

Citreamicin alpha Chemical Structure

CAS No. : 122535-63-1

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Description

Citreamicin alpha (LL-E 19085-alpha) is an antibiotic whose in vitro antimicrobial activity against 429 clinical isolates of Gram-positive cocci has been tested by the agar dilution method. These microorganisms included 313 strains of Staphylococci and 116 strains of Streptococci. The in vitro activity of Citreamicin alpha was compared with that of ampicillin, amoxicillin, ceftriaxone, erythromycin, and vancomycin. For Staphylococci, the MIC values of Citreamicin alpha ranged from 0.12-4.0 μg/ml, and for Streptococcus pyogenes of the genus Streptococcus, it was 0.03-0.12 μg/ml. However, enterococci were relatively resistant, requiring 2.0 μg/ml of the agent to inhibit 64% of the 62 tested strains. The in vitro activity of this antibiotic was much better than that of ampicillin, amoxicillin, ceftriaxone, and erythromycin, but comparable or slightly inferior to that of vancomycin.

Molecular Weight

669.63

Formula

C36H31NO12

CAS No.
SMILES

O=C1C(OC2=CC(OC)=C(C=C23)OC)=C(C(C4=C5C(O)=C(C(N6C(C)(C7)OC(C6(COC(CC(C)C)=O)C)=O)=O)C7=CC5=CC=C41)=O)C3=O

Structure Classification
Initial Source

Micromonospora citrea

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    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Citreamicin alpha
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HY-117845
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