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Details

Stereochemistry ACHIRAL
Molecular Formula C25H29N9O3
Molecular Weight 503.5563
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of PRELADENANT

SMILES

COCCOC1=CC=C(C=C1)N2CCN(CCN3N=CC4=C3N=C(N)N5N=C(N=C45)C6=CC=CO6)CC2

InChI

InChIKey=DTYWJKSSUANMHD-UHFFFAOYSA-N
InChI=1S/C25H29N9O3/c1-35-15-16-36-19-6-4-18(5-7-19)32-11-8-31(9-12-32)10-13-33-23-20(17-27-33)24-28-22(21-3-2-14-37-21)30-34(24)25(26)29-23/h2-7,14,17H,8-13,15-16H2,1H3,(H2,26,29)

HIDE SMILES / InChI

Molecular Formula C25H29N9O3
Molecular Weight 503.5563
Charge 0
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Description

Preladenant (SCH-420814) is an adenosine A(2A) receptor antagonist with a high affinity and very high selectivity for adenosine A(2A) receptors, which is being developed by Merck & Co Inc (following its acquisition of Schering-Plough Corp) for the potential treatment of Parkinson's disease. Preladenant is a potent competitive antagonist of the human A2Areceptor (Ki = 1.1 nM) and has >1000-fold selectivity over all other adenosine receptors, making this compound the most selective A2A receptor antagonist reported to date. Preladenant was being researched as a potential treatment for Parkinson's disease. Positive results were reported in Phase II clinical trials in humans, but it did not prove itself to be more effective than a placebo during Phase III trials, and so was discontinued in May 2013.

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency
1.1 nM [Ki]

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Unknown

Cmax

ValueDoseCo-administeredAnalytePopulation
478 ng/mL
50 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
90.8 ng/mL
10 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
857 ng/mL
200 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
846 ng/mL
100 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
254 ng/mL
25 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens

AUC

ValueDoseCo-administeredAnalytePopulation
2266 ng × h/mL
50 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
260 ng × h/mL
10 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
3312 ng × h/mL
200 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
3339 ng × h/mL
100 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
696 ng × h/mL
25 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
12.3 h
50 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
2.64 h
10 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
16.6 h
200 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
15.3 h
100 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens
3.66 h
25 mg 1 times / day multiple, oral
PRELADENANT plasma
Homo sapiens

Doses

AEs

PubMed

Patents

Sample Use Guides

In Vivo Use Guide
2, 5, or 10 mg tablets taken orally twice daily (BID)
Route of Administration: Oral
In Vitro Use Guide
Preladenant [1 uM] prevented the adenosine-induced process retraction in activated murine microglia
Substance Class Chemical
Record UNII
950O97NUPO
Record Status Validated (UNII)
Record Version