Cephalosporin C

Cephalosporin C is an antibiotic of the cephalosporin class. It was isolated from a fungus of the genus Acremonium and first characterized in 1961.^[1] Although not a very active antibiotic itself, synthetic analogs of cephalosporin C, such as cefalotin, became some of the first marketed cephalosporin antibiotic drugs.

Cephalosporin C

Names
IUPAC name 3-[(Acetyloxy)methyl]-7β-(N6-L-homoglutamino)-3,4-didehydrocepham-4-carboxylic acid
Systematic IUPAC name (6R,7R)-3-[(Acetyloxy)methyl]-7-[(5R)-5-amino-5-carboxypentanamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Other names 7-(5-Amino-5-carboxyvaleramido)cephalosporanic acid
Identifiers
CAS Number	61-24-5 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:15776 Y
ChEMBL	ChEMBL482858 Y
ChemSpider	58980 Y
ECHA InfoCard	100.000.456
PubChem CID	65536
UNII	3XIY7HJT5L Y
CompTox Dashboard (EPA)	DTXSID90960427
InChI InChI=1S/C16H21N3O8S/c1-7(20)27-5-8-6-28-14-11(13(22)19(14)12(8)16(25)26)18-10(21)4-2-3-9(17)15(23)24/h9,11,14H,2-6,17H2,1H3,(H,18,21)(H,23,24)(H,25,26)/t9-,11-,14-/m1/s1 Y Key: HOKIDJSKDBPKTQ-GLXFQSAKSA-N Y InChI=1/C16H21N3O8S/c1-7(20)27-5-8-6-28-14-11(13(22)19(14)12(8)16(25)26)18-10(21)4-2-3-9(17)15(23)24/h9,11,14H,2-6,17H2,1H3,(H,18,21)(H,23,24)(H,25,26)/t9-,11-,14-/m1/s1 Key: HOKIDJSKDBPKTQ-GLXFQSAKBW
SMILES O=C2N1/C(=C(\CS[C@@H]1[C@@H]2NC(=O)CCC[C@H](C(=O)O)N)COC(=O)C)C(=O)O
Properties
Chemical formula	C16H21N3O8S
Molar mass	415.42 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Cephalosporin C strongly absorbs ultraviolet light, is stable to acid, is non-toxic and has in vivo activity in mice.^[2] Cephalosporin C, which has a similar structure to penicillin N, was never commercialized.

Cephalosporin C was a lead compound for the discovery and production of many other cephalosporins.^[2] Cephalosporins are drugs used for some people who are allergic to penicillin.

Uses

Cephalosporins are used to treat bacterial infections such as respiratory tract infections, skin infections and urinary tract infections. When a cephalosporin or any other antibiotic is given as a treatment, the medication should be taken for the fully prescribed time even if symptoms disappear.^[3]

Mechanism of action

Cephalosporin C acts by inhibiting penicillin binding proteins.^{[citation needed]}

Side effects

These are allergic reactions to the drug and require medical attention:^[3]

• itching
• swelling
• dizziness
• rash
• trouble breathing
• vomiting
• severe stomach cramps
• bloody diarrhea
• fever
• weakness
• fast heartbeat

Chemistry

Cephalosporin C has weak activity to the staphylococci infection, which was 0.1% activity. This decrease in activity was due to the replacement of the D-α-aminoadipic acid side chain with phenylacetic acid.^[2]

Biochemistry

Cephalosporin C is the product of the biosynthesis pathway of third generation cephalosporins. This is done by exchanging the acetyl CoA into DAC.^[4]

To achieve cephalosporin C as the end product, there are 6 genes reported to be in control of the pathway.^[4]

References

1. Abraham, E. P.; Newton, G. G. F. (1961). "Structure of cephalosporin C". Biochemical Journal. 79 (2): 377–393. doi:10.1042/bj0790377. PMC 1205850. PMID 13681080.
2. Kardos, Nelson; Demain, Arnold L. (November 2011). "Penicillin: the medicine with the greatest impact on therapeutic outcomes". Applied Microbiology and Biotechnology. 92 (4): 677–687. doi:10.1007/s00253-011-3587-6. ISSN 0175-7598. PMID 21964640. S2CID 39223087.
3. "CEPHALOSPORINS - INJECTION side effects, medical uses, and drug interactions". MedicineNet. Retrieved 2019-05-06.
4. Singh, Khusbu; Mohapatra, Pradumna K.; Pati, Sanghamitra; Dwivedi, Gaurav Raj (2019). "Genetics and Molecular Biology of Genes Encoding Cephalosporin Biosynthesis in Microbes". New and Future Developments in Microbial Biotechnology and Bioengineering. pp. 25–34. doi:10.1016/B978-0-444-63503-7.00002-4. ISBN 9780444635037. S2CID 91263634.