Bacampicillin

Chemical compound

J01CA06 (WHO)

Pharmacokinetic dataMetabolismRapidly hydrolyzed to ampicillinIdentifiers

IUPAC name

1-Ethoxycarbonyloxyethyl (2S,5R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

CAS Number

50972-17-3^N
HCL: 37661-08-8^Y

PubChem CID

39849

DrugBank

DB01602^Y

ChemSpider

390135^Y

UNII

8GM2J22278
HCL: PM034U953T^Y

ChEBI

CHEBI:2968^Y

ChEMBL

ChEMBL1583^Y

CompTox Dashboard (EPA)

DTXSID2048030

Chemical and physical dataFormulaC₂₁H₂₇N₃O₇SMolar mass465.52 g·mol⁻¹

InChI

InChI=1S/C21H27N3O7S/c1-5-29-20(28)31-11(2)30-19(27)15-21(3,4)32-18-14(17(26)24(15)18)23-16(25)13(22)12-9-7-6-8-10-12/h6-11,13-15,18H,5,22H2,1-4H3,(H,23,25)/t11?,13-,14-,15+,18-/m1/s1^Y
Key:PFOLLRNADZZWEX-FFGRCDKISA-N^Y

^NY (what is this?) (verify)

Bacampicillin (INN) is a penicillin antibiotic. It is a prodrug of ampicillin with improved oral bioavailability.^[1]

It was sold under the brand names Spectrobid (Pfizer) and Penglobe (AstraZeneca).In 2015, Pfizer discontinued Spectrobid, and no generic manufacturer has taken over production.^[2] Bacampicillin is thus unavailable in the United States, and is no longer FDA approved.^[3]

Synthesis

Semi-synthetic antibiotic related to penicillin.

The relatively small chemical difference between ampicillin and benzylpenicillin not only allows for substantial oral activity but also results in a substantial broadening of antimicrobial spectrum so as to allow for use against many Gram-negative bacteria. Many devices have been employed in order to enhance still further the oral absorption of ampicillin. Bacampicillin is a prodrug of ampicillin designed for this purpose.

An azidopenicillin sodium salt (1) is reacted with mixed carbonate ester 2 (itself prepared from acetaldehyde and ethyl chloroformate) to give ester 3. Reduction of the azido linkage with hydrogen and a suitable catalyst produces bacampillin (4). Both enantiomers are active. The drug is rapidly absorbed from the gastrointestinal tract and is quickly cleaved by serum esterases to bioactive ampicillin, acetaldehyde, CO₂ and ethanol.^{[citation needed]}

References

^ Bodin NO, Ekström B, Forsgren U, Jalar LP, Magni L, Ramsay CH, Sjöberg B (November 1975). "Bacampicillin: a new orally well-absorbed derivative of ampicillin". Antimicrobial Agents and Chemotherapy. 8 (5): 518–25. doi:10.1128/aac.8.5.518. PMC 429411. PMID 1211909.
^ "Drugs@FDA: FDA-Approved Drugs , BACAMPICILLIN HYDROCHLORIDE". www.accessdata.fda.gov. Retrieved 2022-07-29.
^ "Organon USA Inc. et al.; Withdrawal of Approval of 67 New Drug Applications and 128 Abbreviated New Drug Applications". unblock.federalregister.gov. Retrieved 2022-07-29.
^ DE 2311328, Ekström, Bertil; Kovacs, Ödön Kalman Jozsef & Sjöberg, Berndt Olof Harald, "Penicilline und Verfahren zu deren Herstellung [Penicillin and method for manufacturing thereof]", published 1973-10-18, assigned to Astra Läkemedel AB
^ Ekstrom BA, Kovacs OK, and Sjoberg BO, (1973). Chem. Abstr., 80, 14921q(1974).
^ DE 2144457, Ekström, Bertil Ake & Sjöberg, Berndt Olof Harald, "α-Aminopenicilline und Verfahren zu deren Herstellung [α-aminopenicillins and processes for their preparation]", published 1972-03-30, assigned to Astra Läkemedel AB
^ Ekstrom BA, Sjoberg BO, U.S. patent 3,873,521 and U.S. patent 3,939,270 (1975 and 1976 both to Astra).

Antibacterials active on the cell wall and envelope (J01C-J01D)

Beta-lactams
(inhibit synthesis
of peptidoglycan
layer of bacterial
cell wall by binding
to and inhibiting
PBPs, a group of
D-alanyl-D-alanine
transpeptidases)

Penicillins (Penams)

Narrow
spectrum

β-lactamase sensitive (1st generation)	Benzylpenicillin (G)^# Benzathine benzylpenicillin^# Procaine benzylpenicillin^# Phenoxymethylpenicillin (V)^# Propicillin^‡ Pheneticillin^‡ Azidocillin^‡ Clometocillin^‡ Penamecillin^‡
β-lactamase resistant (2nd generation)	Cloxacillin^# (Dicloxacillin Flucloxacillin) Oxacillin Nafcillin Methicillin^‡

Extended
spectrum

Aminopenicillins (3rd generation)	Amoxicillin^# Ampicillin^# (Pivampicillin Hetacillin^‡ Bacampicillin^‡ Lenampicillin Metampicillin^‡ Talampicillin^‡) Epicillin^‡
Carboxypenicillins (4th generation)	Ticarcillin Carbenicillin^‡ / Carindacillin^‡ Temocillin^‡
Ureidopenicillins (4th generation)	Piperacillin Azlocillin^‡ Mezlocillin^‡
Other	Mecillinam (Pivmecillinam) Sulbenicillin^‡

Carbapenems / Penems

Cephems
Cephalosporins
Cephamycins
Carbacephems

1st generation	Cefazolin^# Cefalexin ^# Cefadroxil Cefapirin Cefazedone^‡ Cefazaflur^‡ Cefradine^‡ Cefroxadine^‡ Ceftezole^‡ Cefaloglycin^‡ Cefacetrile^‡ Cefalonium^‡ Cefaloridine^‡ Cefalotin Cefatrizine^‡
2nd generation	Cefaclor Cefprozil Cefuroxime Cefuroxime axetil Cefamandole^‡ Cefonicid^‡ Ceforanide^‡ Cefuzonam^‡ Cephamycin (Cefoxitin Cefotetan Cefminox^‡ Cefbuperazone^‡ Cefmetazole^‡) Carbacephem (Loracarbef^‡)
3rd generation	Cefixime^# Ceftriaxone^# Cefotaxime^# Antipseudomonal (Ceftazidime^# Cefoperazone) Cefdinir Cefcapene Cefdaloxime Ceftizoxime Cefmenoxime Cefpiramide Cefpodoxime Ceftibuten Cefditoren Cefotiam^‡ Cefetamet^‡ Cefodizime^‡ Cefpimizole^‡ Cefsulodin^‡ Cefteram^‡ Ceftiolene^‡ Oxacephem (Flomoxef Latamoxef^‡)
4th generation	Cefepime Cefozopran^‡ Cefpirome Cefquinome^‡
5th generation	Ceftaroline fosamil Ceftolozane Ceftobiprole
Siderophore	Cefiderocol^#
Veterinary	Ceftiofur Cefquinome Cefovecin

Monobactams

β-lactamase inhibitors

Combinations

Polypeptides

Glycopeptides Lipoglycopeptides	Inhibit PG chain elongation: Vancomycin^# (Oritavancin Telavancin) Teicoplanin (Dalbavancin) Ristocetin^‡ Avoparcin Inhibit autolysin: Corbomycin (not approved)
Lipopeptides	Insert into bacterial cell wall causing perforation and depolarization: Daptomycin Surfactin
Polymyxins	Bind to LPS in the outer bacterial membrane, acting in detergent-like fashion: Colistin Polymyxin B
Other	Inhibits PG elongation and crosslinking: Ramoplanin^§