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

Details

Stereochemistry ACHIRAL
Molecular Formula C29H28ClF3N4O2.2C7H8O3S
Molecular Weight 901.41
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of TELACEBEC DITOSYLATE

SMILES

CC1=CC=C(C=C1)S(O)(=O)=O.CC2=CC=C(C=C2)S(O)(=O)=O.CCC3=C(N4C=C(Cl)C=CC4=N3)C(=O)NCC5=CC=C(C=C5)N6CCC(CC6)C7=CC=C(OC(F)(F)F)C=C7

InChI

InChIKey=CCGFTOLSNJBYDV-UHFFFAOYSA-N
InChI=1S/C29H28ClF3N4O2.2C7H8O3S/c1-2-25-27(37-18-22(30)7-12-26(37)35-25)28(38)34-17-19-3-8-23(9-4-19)36-15-13-21(14-16-36)20-5-10-24(11-6-20)39-29(31,32)33;2*1-6-2-4-7(5-3-6)11(8,9)10/h3-12,18,21H,2,13-17H2,1H3,(H,34,38);2*2-5H,1H3,(H,8,9,10)

HIDE SMILES / InChI

Molecular Formula C7H8O3S
Molecular Weight 172.202
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C29H28ClF3N4O2
Molecular Weight 557.006
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Q203 (6-chloro-2-ethyl-N-(4-(4-(4-(trifluoromethoxy)phenyl)piperidin-1-yl)benzyl)imidazo [1,2-a]pyridine-3-carboxamide) is an an imidazopyridine antitubercular compound. Q203 targets the cytochrome b subunit (QcrB) of the cytochrome bc1 complex. This complex is an essential component of the respiratory electron transport chain of ATP synthesis. Q203 inhibited the growth of multidrug-resistant (MDR) and extensively drug-resistant (XDR) M. tuberculosis clinical isolates in culture broth medium in the low nanomolar range and was efficacious in a mouse model of tuberculosis at a dose less than 1 mg per kg body weight, which highlights the potency of this compound. In addition, Q203 displays pharmacokinetic and safety profiles compatible with once-daily dosing. Q203 is a promising new clinical candidate for the treatment of tuberculosis.

Originator

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Target ID: P9WP37
Gene ID: 887400.0
Gene Symbol: qcrB
Target Organism: Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
Unknown

Approved Use

Unknown
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
0.92 μg/mL
10 mg/kg single, oral
dose: 10 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
Q-203 plasma
Mus musculus
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
1490 ng/mL
10 mg/kg single, oral
dose: 10 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
Q-203 plasma
Mus musculus
population: UNKNOWN
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
23.91 μg × h/mL
10 mg/kg single, oral
dose: 10 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
Q-203 plasma
Mus musculus
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
44100 ng × h/mL
10 mg/kg single, oral
dose: 10 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
Q-203 plasma
Mus musculus
population: UNKNOWN
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
23.4 h
10 mg/kg single, oral
dose: 10 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
Q-203 plasma
Mus musculus
population: UNKNOWN
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
Doses

Doses

DosePopulationAdverse events​
300 mg 1 times / day multiple, oral
Highest studied dose
Dose: 300 mg, 1 times / day
Route: oral
Route: multiple
Dose: 300 mg, 1 times / day
Sources: Page: p.2
unhealthy, ADULT
Health Status: unhealthy
Condition: pulmonary tuberculosis
Age Group: ADULT
Sex: M+F
Food Status: UNKNOWN
Sources: Page: p.2
Overview

OverviewOther

Other InhibitorOther SubstrateOther Inducer





Drug as perpetrator​Drug as victim

Drug as victim

TargetModalityActivityMetaboliteClinical evidence
no
unlikely
Tox targets

Tox targets

TargetModalityActivityMetaboliteClinical evidence
PubMed

PubMed

TitleDatePubMed
Discovery of Q203, a potent clinical candidate for the treatment of tuberculosis.
2013 Sep
Lead optimization of a novel series of imidazo[1,2-a]pyridine amides leading to a clinical candidate (Q203) as a multi- and extensively-drug-resistant anti-tuberculosis agent.
2014 Jun 26
New agents for the treatment of drug-resistant Mycobacterium tuberculosis.
2016 Jul 1
Efflux Attenuates the Antibacterial Activity of Q203 in Mycobacterium tuberculosis.
2017 Jul
Exploiting the synthetic lethality between terminal respiratory oxidases to kill Mycobacterium tuberculosis and clear host infection.
2017 Jul 11
Patents

Sample Use Guides

The Phase I clinical trial (clinicaltrials.gov identifier: NCT02530710) enrolling healthy patients is a dose-escalation study starting at 100 mg dosing that will be adjusted based on PK analysis.
Route of Administration: Oral
Q203 inhibited the growth of multidrug-resistant (MDR) and extensively drug-resistant (XDR) M. tuberculosis clinical isolates in culture broth medium in the low nanomolar range
Substance Class Chemical
Created
by admin
on Sat Dec 16 08:04:38 GMT 2023
Edited
by admin
on Sat Dec 16 08:04:38 GMT 2023
Record UNII
QRS143W4AR
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
TELACEBEC DITOSYLATE
Common Name English
IMIDAZO(1,2-A)PYRIDINE-3-CARBOXAMIDE, 6-CHLORO-2-ETHYL-N-((4-(4-(4-(TRIFLUOROMETHOXY)PHENYL)-1-PIPERIDINYL)PHENYL)METHYL)-, 4-METHYLBENZENESULFONATE (1:2)
Systematic Name English
Q-203 DITOSYLATE
Code English
Code System Code Type Description
CAS
1566517-83-6
Created by admin on Sat Dec 16 08:04:38 GMT 2023 , Edited by admin on Sat Dec 16 08:04:38 GMT 2023
PRIMARY
PUBCHEM
91617801
Created by admin on Sat Dec 16 08:04:38 GMT 2023 , Edited by admin on Sat Dec 16 08:04:38 GMT 2023
PRIMARY
FDA UNII
QRS143W4AR
Created by admin on Sat Dec 16 08:04:38 GMT 2023 , Edited by admin on Sat Dec 16 08:04:38 GMT 2023
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE
Related Record Type Details
ACTIVE MOIETY