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Otenzepad
Clinical data
Structure of Otenzepad
Routes of administration	oral
Pharmacokinetic data
Bioavailability	45% (oral)^[1]
Elimination half-life	2.5h
Identifiers
IUPAC name 11-[2-[2-(diethylaminomethyl)piperidin-1-yl]acetyl]-5H-pyrido[2,3-b][1,4]benzodiazepin-6-one
CAS Number	102394-31-0^Y
PubChem CID	107867
IUPHAR/BPS	309
ChemSpider	97004
UNII	OM7J0XAL0S
ChEBI	CHEBI:111174
ChEMBL	ChEMBL17045
CompTox Dashboard (EPA)	DTXSID0045674
ECHA InfoCard	100.220.541
Chemical and physical data
Formula	C₂₄H₃₁N₅O₂
Molar mass	421.545 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES CCN(CC)CC1CCCCN1CC(=O)N2C3=CC=CC=C3C(=O)NC4=C2N=CC=C4
InChI InChI=1S/C24H31N5O2/c1-3-27(4-2)16-18-10-7-8-15-28(18)17-22(30)29-21-13-6-5-11-19(21)24(31)26-20-12-9-14-25-23(20)29/h5-6,9,11-14,18H,3-4,7-8,10,15-17H2,1-2H3,(H,26,31) Key:UBRKDAVQCKZSPO-UHFFFAOYSA-N

Otenzepad is a competitive muscarinic receptor antagonist that is relatively selective at the M2 receptor. It was investigated as a treatment for arrhythmia and bradycardia due to its cardioselectivity but research ceased after stage III clinical trials. The drug was originally developed by the German pharmaceutical company, Boehringer Ingelheim Pharma KG.^[1]

Pharmacodynamics

The (+)-enantiomer has 8 times greater potency at the M2 receptor than the (-)-enantiomer.^[1]

Potency of Otenzepad at muscarinic receptor isoforms^[1]
mAChR isoform	Dissociation constant (K_i)
M1	537.0 - 1300nM^[1]^[2]
M2	81.0 - 186nM^[1]^[2]
M3	838 - 2089.0nM^[2]^[1]
M4	407.0 - 1800nM^[1]^[2]
M5	2800nM^[2]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h "Otenzepad". National Centre for Advancing Translational Sciences. Retrieved 10 June 2021.
^ ^a ^b ^c ^d ^e Buckley NJ, Bonner TI, Buckley CM, Brann MR (1989). "Antagonist binding properties of five cloned muscarinic receptors expressed in CHO-K1 cells". Mol. Pharmacol. 35 (4): 469–76. PMID 2704370.

Muscarinic acetylcholine receptor modulators

mAChRs

Agonists

Antagonists

3-Quinuclidinyl benzilate
4-DAMP
Aclidinium bromide (+formoterol)
Abediterol
AF-DX 250
AF-DX 384
Ambutonium bromide
Anisodamine
Anisodine
Antihistamines (first-generation) (e.g., brompheniramine, buclizine, captodiame, chlorphenamine (chlorpheniramine), cinnarizine, clemastine, cyproheptadine, dimenhydrinate, dimetindene, diphenhydramine, doxylamine, meclizine, mequitazine, perlapine, phenindamine, pheniramine, phenyltoloxamine, promethazine, propiomazine, triprolidine)
AQ-RA 741
Atropine
Atropine methonitrate
Atypical antipsychotics (e.g., clozapine, fluperlapine, olanzapine (+fluoxetine), rilapine, quetiapine, tenilapine, zotepine)
Benactyzine
Benzatropine (benztropine)
Benzilone
Benzilylcholine mustard
Benzydamine
Bevonium
BIBN 99
Biperiden
Bornaprine
Camylofin
CAR-226,086
CAR-301,060
CAR-302,196
CAR-302,282
CAR-302,368
CAR-302,537
CAR-302,668
Caramiphen
Cimetropium bromide
Clidinium bromide
Cloperastine
CS-27349
Cyclobenzaprine
Cyclopentolate
Darifenacin
DAU-5884
Desfesoterodine
Dexetimide
DIBD
Dicycloverine (dicyclomine)
Dihexyverine
Difemerine
Diphemanil metilsulfate
Ditran
Drofenine
EA-3167
EA-3443
EA-3580
EA-3834
Emepronium bromide
Etanautine
Etybenzatropine (ethybenztropine)
Fenpiverinium
Fentonium bromide
Fesoterodine
Flavoxate
Glycopyrronium bromide (+beclometasone/formoterol, +indacaterol, +neostigmine)
Hexahydrodifenidol
Hexahydrosiladifenidol
Hexbutinol
Hexocyclium
Himbacine
HL-031,120
Homatropine
Imidafenacin
Ipratropium bromide (+salbutamol)
Isopropamide
J-104,129
Hyoscyamine
Mamba toxin 3
Mamba toxin 7
Mazaticol
Mebeverine
Meladrazine
Mepenzolate
Methantheline
Methoctramine
Methylatropine
Methylhomatropine
Methylscopolamine
Metixene
Muscarinic toxin 7
N-Ethyl-3-piperidyl benzilate
N-Methyl-3-piperidyl benzilate
Nefopam
Octatropine methylbromide (anisotropine methylbromide)
Orphenadrine
Otenzepad (AF-DX 116)
Otilonium bromide
Oxapium iodide
Oxitropium bromide
Oxybutynin
Oxyphencyclimine
Oxyphenonium bromide
PBID
PD-102,807
PD-0298029
Penthienate
Pethidine
pFHHSiD
Phenglutarimide
Phenyltoloxamine
Pipenzolate bromide
Piperidolate
Pirenzepine
Piroheptine
Pizotifen
Poldine
Pridinol
Prifinium bromide
Procyclidine
Profenamine (ethopropazine)
Propantheline bromide
Propiverine
Quinidine
3-Quinuclidinyl thiochromane-4-carboxylate
Revefenacin
Rociverine
RU-47,213
SCH-57,790
SCH-72,788
SCH-217,443
Scopolamine (hyoscine)
Scopolamine butylbromide (hyoscine butylbromide)
Silahexacyclium
Sofpironium bromide
Solifenacin
SSRIsTooltip Selective serotonin reuptake inhibitors (e.g., femoxetine, paroxetine)
Telenzepine
Terodiline
Tetracyclic antidepressants (e.g., amoxapine, maprotiline, mianserin, mirtazapine)
Tiemonium iodide
Timepidium bromide
Tiotropium bromide
Tiquizium bromide
Tofenacin
Tolterodine
Tricyclic antidepressants (e.g., amitriptyline (+perphenazine), amitriptylinoxide, butriptyline, cidoxepin, clomipramine, desipramine, desmethyldesipramine, dibenzepin, dosulepin (dothiepin), doxepin, imipramine, lofepramine, nitroxazepine, northiaden (desmethyldosulepin), nortriptyline, protriptyline, quinupramine, trimipramine)
Tridihexethyl
Trihexyphenidyl
Trimebutine
Tripitamine (tripitramine)
Tropacine
Tropatepine
Tropicamide
Trospium chloride
Typical antipsychotics (e.g., chlorpromazine, chlorprothixene, cyamemazine (cyamepromazine), loxapine, mesoridazine, thioridazine)
Umeclidinium bromide (+vilanterol)
WIN-2299
Xanomeline
Zamifenacin

Precursors
(and prodrugs)

See also: Receptor/signaling modulators; Nicotinic acetylcholine receptor modulators; Acetylcholine metabolism/transport modulators

Categories:

Hidden categories:

Pharmacodynamics

See also

References