61477-96-1 Usage
Chemical Properties
White Crystalline Solid; odorless; slightly hygroscopic. It is easily soluble in methanol, soluble in absolute ethanol or acetone, and very slightly soluble in water. It is a semi-synthetic penicillin antibiotic with broad-spectrum antibacterial effect.
Originator
Pentcillin, Toyama ,Japan ,1980
Uses
Piperacillin is a semisynthetic penicillin with wide spectrum of antimicrobial activity, particularly pseudomonas strains. It is used to treat moderate-to-severe infections due to susceptible organisms.
Definition
ChEBI: Piperacillin is a penicillin in which the substituent at position 6 of the penam ring is a 2-[(4-ethyl-2,3-dioxopiperazin-1-yl)carboxamido]-2-phenylacetamido group. It has a role as an antibacterial drug. It is a penicillin and a penicillin allergen. It is a conjugate acid of a piperacillin(1-).
Therapeutic Function
Antibiotic
Antimicrobial activity
It displays good activity against non-β-lactamaseproducing
strains of N. gonorrhoeae, ampicillin-susceptible
H. influenzae and many Enterobacteriaceae. It is the most
active of the antipseudomonal penicillins against Ps. aeruginosa
and retains its activity in the absence of a β-lactamase
inhibitor. Synergy with aminoglycosides has been demonstrated
against many strains of Enterobacteriaceae and Ps.
aeruginosa.
Acquired resistance
There is complete cross-resistance with other ureidopenicillins,
but ticarcillin-resistant strains of Ps. aeruginosa may
be susceptible. Piperacillin-resistant strains of B. fragilis
and other Bacteroides spp. are common. Because piperacillin
is hydrolyzed by most β-lactamases, many β-lactamaseproducing
isolates are resistant unless it is protected by
β-lactamase inhibitors.
Pharmacokinetics
Oral absorption: Negligible
Cmax 2 g (2–3 min intravenous injection): 305 mg/L after 5 min
Plasma half-life: 0.9 h
Volume of distribution: 16–24 L/1.73 m2
Plasma protein binding: 16%
In patients with meningitis, mean CSF penetration of 30%
has been found. The urine is the principal route of excretion,
50–70% of the dose appearing over 12 h, most in the first
4 h. Most is excreted via the tubules, 75–90% in active form.
The half-life is prolonged in renal failure but much less than
is the case with carboxypenicillins. There is substantial biliary
excretion, levels in the common duct bile after a 1 g intravenous
dose commonly reaching 500 mg/L or more. During
hemodialysis the plasma half-life remains elevated and only
10–15% of the dose is removed.
Clinical Use
Piperacillin (Pipracil) is the most generally useful of the extended-spectrum acylureidopenicillins. It is more active thanmezlocillin against susceptible strains of Gram-negativeaerobic bacilli, such as Serratia marcescens, Proteus,Enterobacter, Citrobacter spp., and P. aeruginosa.Mezlocillin, however, appears to be more active againstProvidencia spp. and K. pneumoniae. Piperacillin is alsoactive against anaerobic bacteria, especially B. fragilis andS. faecalis (enterococcus). β-Lactamase–producing strainsof these organisms are, however, resistant to piperacillin,which is hydrolyzed by S. aureus β-lactamase. The β-lactamase susceptibility of piperacillin is not absolute becauseβ-lactamase–producing, ampicillin-resistant strainsof N. gonorrhoeae and H. influenzae are susceptible topiperacillin.Piperacillin is destroyed rapidly by stomach acid; therefore,it is active only by intramuscular or intravenousadministration. The injectable form is provided as the white,crystalline, water-soluble sodium salt. Its pharmacokineticproperties are very similar to those of the other acylureidopenicillins.
Side effects
Piperacillin is generally well tolerated, with mild to moderate
pain on injection, thrombophlebitis and diarrhea in some
patients. It otherwise exhibits side effects common to the
group, including hypersensitivity, leukopenia and abnormalities
of platelet aggregation without coagulation defect, except
on prolonged treatment.
Synthesis
Piperacillin, (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(2R)-2-[(4-ethyl-2,3-dioxo-
1-piperazinyl)formamido]-2-phenylacetamido]-4-thia-1-azabicyclo[3.2.0]-heptan-2-carboxylic acid (32.1.1.30), is also synthesized by acylating ampicillin (32.1.1.16), but with
1-chlorocarbonyl-4-ethylpiperazin-2,3-dione (32.1.1.29). The necessary 1-chlorocarbonyl-4-
ethylpiperazin-2,3-dione (32.1.1.29) is synthesized by reacting N-ethylethylenediamine with
diethyloxalate, forming 4-ethylpiperazin-2,3-dione (32.1.1.28), and then acylating this with
phosgene after initial silylation of the product at the nitrogen atom with trimethylchlorosilane.
Mode of action
Piperacillin binds to penicillin binding proteins (PBP) located on the inner membrane of the bacterial cell wall, thereby interfering with the cross-linking of peptidoglycan chains necessary for bacterial cell wall strength and rigidity. As a result, cell wall synthesis is interrupted leading to a weakened cell wall and eventually cell lysis.
Check Digit Verification of cas no
The CAS Registry Mumber 61477-96-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,4,7 and 7 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 61477-96:
(7*6)+(6*1)+(5*4)+(4*7)+(3*7)+(2*9)+(1*6)=141
141 % 10 = 1
So 61477-96-1 is a valid CAS Registry Number.
InChI:InChI=1/C23H27N5O7S/c1-4-26-10-11-27(19(32)18(26)31)22(35)25-13(12-8-6-5-7-9-12)16(29)24-14-17(30)28-15(21(33)34)23(2,3)36-20(14)28/h5-9,13-15,20H,4,10-11H2,1-3H3,(H,24,29)(H,25,35)(H,33,34)/t13-,14-,15+,20-/m1/s1
61477-96-1Relevant articles and documents
Preparation method of piperacillin
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Paragraph 0028-0029; 0031-0032; 0034; 0035; 0037; 0040; 0042, (2021/02/06)
The invention discloses a preparation method of piperacillin. According to the method, DBU with stronger alkalinity is used as an initiator to promote the reaction of N-ethyl-2, 3-dioxopiperazine andtriphosgene to obtain N-ethyl-2, 3-dioxopiperazine acyl chloride, so that the use of trimethylchlorosilane is avoided; In the condensation reaction, sodium acetate is used as an acid-binding agent, sothat the pollution of carbon dioxide to the environment is avoided. The alkalinity of sodium acetate is weaker than that of sodium bicarbonate, the hydrolysis degree in the reaction process is low, meanwhile, DBU is used as a catalyst, and the N-ethyl-2, 3-dioxopiperazine acyl chloride hydrolysate can also react with ampicillin to obtain piperacillin, so that the reaction yield is increased, andthe production cost is further reduced.
Piperacillin sodium compound containing half water
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Paragraph 0029-0031; 0037-0039, (2019/01/23)
The invention discloses a piperacillin sodium compound containing half water and a preparation method thereof. Each mole of piperacillin sodium contains a half mole of water. First, ampicillin trihydrate is reacted with 4-ethyl-2,3-dioxypiperazine formyl chloride to form piperacillin acid, then piperacillin acid is reacted with sodium acetate in a mixed solution of acetone and water, isopropanol is added dropwise, and crystallization, filtration and drying are conducted to obtain the piperacillin sodium compound containing half water. The piperacillin sodium compound containing half water hashigh fluidity, low hygroscopicity and impurity content, high thermodynamic stability and a wider application prospect.
In vitro and in vivo evaluation of positively charged liposaccharide derivatives as oral absorption enhancers for the delivery of anionic drugs
Bergeon, Julie A.,Ziora, Zyta M.,Abdelrahim, Adel S.,Pernevi, Niklas U.,Moss, Anne R.,Toth, Istvan
experimental part, p. 2333 - 2342 (2011/03/21)
Oral delivery of hydrophilic, ionisable drugs remains a major challenge in drug development and a number of active pharmaceuticals fail to reach the market of oral drugs because of a lack of absorption and/or stability issues. One possible approach to improving the bioavailability of such drug candidates is to increase their lipophilicity, which is a key parameter in the permeation across cell membranes. However, modifying the chemical structure by adding lipid residues often results in changes in activity. With ionised molecules, ion-pairing can be considered to associate charged lipid moieties with the parent drug without altering its structure and therefore activity. This study presents the results of in vitro and in vivo evaluation of a series of synthetic, positively charged liposaccharide derivatives combined with an anionic model drug, piperacillin. The antimicrobial activity, plasma stability, Caco-2 cell permeability and oral absorption of the conjugates were assessed. Increases in apparent permeability were observed in vitro for three of the tested formulations, while retaining the antibacterial activity of the drug. However, the in vivo intestinal absorption of piperacillin formulated with the liposaccharide derivatives was found unchanged, possibly due to molecular dissociation, early degradation or structural differences between the intestinal epithelium and cultured monolayers.