pivampicillin

Pivampicillin
Systematic (IUPAC) name
	2,2-Dimethylpropanoyloxymethyl (2S,5R,6R)-6-{[(2R)-2-amino-2-phenyl-acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
Clinical data
AHFS/Drugs.com	Micromedex Detailed Consumer Information
Routes of; administration	Oral
Pharmacokinetic data
Excretion	Renal (76%)
Identifiers
CAS Number	33817-20-8
ATC code	J01CA02 (WHO)
PubChem	CID 33478
DrugBank	DB01604
ChemSpider	30899
UNII	0HLM346LL7
KEGG	D08396
ChEBI	CHEBI:8255
ChEMBL	CHEMBL323354
Chemical data
Formula	C22H29N3O6S
Molar mass	463.548 g/mol
	SMILES O=C(OCOC(=O)C(C)(C)C)[C@@H]2N3C(=O)[C@@H](NC(=O)[C@@H](c1ccccc1)N)[C@H]3SC2(C)C ;
	InChI InChI=1S/C22H29N3O6S/c1-21(2,3)20(29)31-11-30-19(28)15-22(4,5)32-18-14(17(27)25(15)18)24-16(26)13(23)12-9-7-6-8-10-12/h6-10,13-15,18H,11,23H2,1-5H3,(H,24,26)/t13-,14-,15+,18-/m1/s1 ; Key:ZEMIJUDPLILVNQ-ZXFNITATSA-N ;
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/06/30 11:35:04」(JST)

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Pivampicillin is a pivaloyloxymethyl ester of ampicillin. It is a prodrug, which is thought to enhance the oral bioavailability of ampicillin because of its greater lipophilicity compared to that of ampicillin.

Adverse effects

Prodrugs that release pivalic acid when broken down by the body—such as pivampicillin, pivmecillinam and cefditoren pivoxil—have long been known to deplete levels of carnitine.^[1]^[2] This is not due to the drug itself, but to pivalate, which is mostly removed from the body by forming a conjugate with carnitine. Although short-term use of these drugs can cause a marked decrease in blood levels of carnitine,^[3] it is unlikely to be of clinical significance;^[2] long-term use, however, appears problematic and is not recommended.^[2]^[4]^[5]

References

^ Holme E, Greter J, Jacobson CE, et al. (August 1989). "Carnitine deficiency induced by pivampicillin and pivmecillinam therapy". Lancet 2 (8661): 469–73. doi:10.1016/S0140-6736(89)92086-2. PMID 2570185.
^ ^a ^b ^c Brass EP (December 2002). "Pivalate-generating prodrugs and carnitine homeostasis in man". Pharmacol Rev 54 (4): 589–98. doi:10.1124/pr.54.4.589. PMID 12429869.
^ Abrahamsson K, Holme E, Jodal U, Lindstedt S, Nordin I (June 1995). "Effect of short-term treatment with pivalic acid containing antibiotics on serum carnitine concentration—a risk irrespective of age". Biochem. Mol. Med. 55 (1): 77–9. doi:10.1006/bmme.1995.1036. PMID 7551831.
^ Holme E, Jodal U, Linstedt S, Nordin I (September 1992). "Effects of pivalic acid-containing prodrugs on carnitine homeostasis and on response to fasting in children". Scand J Clin Lab Invest 52 (5): 361–72. doi:10.3109/00365519209088371. PMID 1514015.
^ Makino Y, Sugiura T, Ito T, Sugiyama N, Koyama N (September 2007). "Carnitine-associated encephalopathy caused by long-term treatment with an antibiotic containing pivalic acid". Pediatrics 120 (3): e739–41. doi:10.1542/peds.2007-0339. PMID 17724113.

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