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HomeProduct name listThienamycin

Thienamycin

  • CAS NO.:59995-64-1
  • Empirical Formula: C11H16N2O4S
  • Molecular Weight: 272.32
  • MDL number: MFCD00072032
  • EINECS: 203-170-6
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-05-19 16:27:39
Thienamycin Structural

What is Thienamycin?

Description

Thienamycin, one of the most potent naturally-produced antibiotics known thus far, was discovered in Streptomyces cattleya in 1976. Thienamycin has excellent activity against both Gram-positive and Gram-negative bacteria and is resistant to bacterial β-lactamase enzymes.

The Uses of Thienamycin

Thienamycin is one of the most potent naturally produced antibiotics known thus far. It has excellent activity against both Gram-positive and Gram-negative bacteria and is resistant to bacterial β-lactamase enzymes.

What are the applications of Application

Thienamycin is a very potent antibiotic for cell culture and other research uses

Definition

ChEBI: Thienamycin is a member of carbapenems.

Biosynthesis

 The formation of thienamycin is thought to occur through a different pathway from classic β-lactams (penicillins, cephalosporins). Production of classic β-lactams in both fungi and bacteria occur through two steps: First, the condensation of L-cysteine, L-Valine, and L-α-amino adipic acid by ACV synthetase (ACVS, a nonribsomal peptide synthetase) and then cyclization of this formed tripeptide by isopenicillin N synthetase (IPNS).

Mechanism of action

In vitro, thienamycin employs a similar mode of action as penicillins through disrupting the cell wall synthesis (peptidoglycan biosynthesis) of various Gram-positive and Gram-negative bacteria (Staphylococcus aureus,Staphylococcus epidermidis, Pseudomonas aeruginosa to name a few). In a study carried out by Spratt et al., they found that, although thienamycin binds to all of the penicillin-binding proteins (PBP) in Escherichia coli, it preferentially binds to PBP-1 and PBP-2, which are both associated with the elongation of the cell wall.  Unlike pencillins, which are rendered ineffective through rapid hydrolysis by the β-lactamase enzyme present in some strains of bacteria, thienamycin remains antimicrobially active. Neu et al. found that thienamycin displayed high activity against bacteria that were resistant to other β-lactamase stable compounds (cephalosporins), highlighting the superiority of thienamycin as an antibiotic among β-lactams.

Clinical Use

Thienamycin itself is extremely unstable and decomposes in aqueous solution. Consequently, thienamycin is impractical for clinical treatment of bacterial infections. For this reason, stable derivatives of thienamycin were created for medicinal consumption. One such derivative, imipenem, was formulated in 1985. Imipenem, an N-formimidoyl derivative of thienamycin, is rapidly metabolized by the renal dihydropeptidase enzyme found in the human body. To prevent its rapid degradation, imipenem is normally co-administered with cilastatin, an inhibitor of this enzyme.

Properties of Thienamycin

Boiling point: 514.0±50.0 °C(Predicted)
alpha  D27 +82.7° (c = 1.0 in water)
Density  1.50±0.1 g/cm3(Predicted)
storage temp.  Hygroscopic, -86°C Freezer, Under inert atmosphere
solubility  Chloroform (Slightly), Methanol (Slightly), Water (Slightly)
pka 4.20±0.40(Predicted)
form  Solid
color  Off-White to Dark Yellow
Stability: Hygroscopic, Temperature Sensitive, Very Unstable
InChI InChI=1S/C11H16N2O4S/c1-5(14)8-6-4-7(18-3-2-12)9(11(16)17)13(6)10(8)15/h5-6,8,14H,2-4,12H2,1H3,(H,16,17)/t5-,6-,8-/m1/s1

Safety information for Thienamycin

Computed Descriptors for Thienamycin

InChIKey WKDDRNSBRWANNC-ATRFCDNQSA-N
SMILES N12[C@@]([H])([C@@H]([C@H](O)C)C1=O)CC(SCCN)=C2C(O)=O

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