U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ACHIRAL
Molecular Formula C20H18F2N4O3.ClH
Molecular Weight 436.84
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of Fandofloxacin hydrochloride

SMILES

Cl.CN1CCN(CC1)C2=CC3=C(C=C2F)C(=O)C(=CN3C4=NC=C(F)C=C4)C(O)=O

InChI

InChIKey=UPCHGBDAUCFDMW-UHFFFAOYSA-N
InChI=1S/C20H18F2N4O3.ClH/c1-24-4-6-25(7-5-24)17-9-16-13(8-15(17)22)19(27)14(20(28)29)11-26(16)18-3-2-12(21)10-23-18;/h2-3,8-11H,4-7H2,1H3,(H,28,29);1H

HIDE SMILES / InChI

Description

Fandofloxacin is a difluoroquinolone derivative. This compound possesses an antibacterial spectrum comparable to those of rufloxacin and ciprofloxacin in vivo. Fandofloxacin showed a rapid and nearly complete absorption, and a long residence time in the body. Because it has been reported that the in vivo antibacterial activity of Fandofloxacin is comparable or superior to other quinolones, despite the fact that its in vitro activity is significantly lower than that of the other compounds, the pharmacokinetics of this antibiotic may be responsible, at least in part, for the enhanced in vivo antibacterial activity of Fandofloxacin. Fandofloxacin is an inhibitor of bacterial DNA gyrase. The toxicities and adverse effects of Fandofloxacin observed in various toxicology studies and clinical trials were less than those of commercially available drugs. It has been in phase II clinical trial for the treatment of Urinary tract infections. However, this research has been discontinued in 2008.

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
Unknown

Cmax

ValueDoseCo-administeredAnalytePopulation
5.65 mg/L
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
5.47 mg/L
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
8 mg/L
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
7.36 mg/L
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens

AUC

ValueDoseCo-administeredAnalytePopulation
87.7 mg × h/L
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
82.2 mg × h/L
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
114.8 mg × h/L
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
107.4 mg × h/L
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
17.54 h
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
18.34 h
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
16.74 h
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
17.15 h
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens

Funbound

ValueDoseCo-administeredAnalytePopulation
50%
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
50%
300 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
50%
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens
50%
400 mg 1 times / day steady-state, oral
FANDOFLOXACIN plasma
Homo sapiens

Sourcing

PubMed

Sample Use Guides

In Vivo Use Guide
400 mg tablet once daily
Route of Administration: Oral
In Vitro Use Guide
Against S.pyogenes, Fandofloxacin (DW-116) (MIC50=2 mg/L; MIC90=4 mg/L) was two- or four-fold more active than rufloxacin (MIC50=8 mg/L; MIC90=8 mg/L) and it exhibited similar activity to sparfloxacin, ciprofloxacin and ofloxacin. DW-116 (MIC50=4–8 mg/L; MIC90=8–32 mg/L) was more active than rufloxacin (MIC50=4–16 mg/L; MIC90=16–32 mg/L) and less active than sparfloxacin and ciprofloxacin against S. pneumoniae and Enterococcus faecalis. Antibacterial activity of DW-116 against E. coli (MIC range 0.25–32 mg/L) was slightly inferior to that of sparfloxacin (MIC range 0.03–4 mg/L), ciprofloxacin (MIC range < 0.008–1 mg/L) and ofloxacin (MIC range 0.015–16 mg/L) and similar to that of rufloxacin (MIC range 0.25–32 mg/L).