Echinopsidine

Chemical compound

none

Legal statusLegal status

In general: ℞ (Prescription only)

Identifiers

IUPAC name

1-Methyl-2,3-dihydroquinolin-4-imine

CAS Number

2400-75-1
58916-73-7 (hydroiodide)

PubChem CID

161462

ChemSpider

141825

UNII

U3WB825N39

Chemical and physical dataFormulaC₁₀H₁₂N₂Molar mass160.220 g·mol⁻¹

Echinopsidine (Adepren) is an antidepressant that was under development in Bulgaria for the treatment of depression.^[1]^[2] It increases serotonin, norepinephrine, and dopamine levels in the brain and is believed to act as a monoamine oxidase inhibitor (MAOI).^[3]^[4]^[5] Echinopsidine is found naturally in Echinops echinatus along with the related alkaloids echinopsine and echinozolinone.^[6]

References

^ Guliamov MG (1982). "[Experience with the use of new Bulgarian psychotropic drugs]". Zhurnal Nevropatologii I Psikhiatrii Imeni S.S. Korsakova (in Russian). 82 (11): 115–122. PMID 6758442.
^ Guliamov MG (1986). "[Comparative evaluation of the therapeutic efficacy of the antidepressants adepren, linamiphen and emovit]". Zhurnal Nevropatologii I Psikhiatrii Imeni S.S. Korsakova (in Russian). 86 (4): 582–587. PMID 3716711.
^ Tiutiulkova N, Gorancheva I (1978). "[Effect of adepren on the cerebral concentration of serotonin]". Eksperimentalna Meditsina I Morfologiia (in Bulgarian). 17 (2): 83–85. PMID 658004.
^ Stefanova D, Tiutiulkova N, Nikolova M (1976). "[Effect of adepren on the behavior and brain catecholamines of rats in an open field setup]". Eksperimentalna Meditsina I Morfologiia (in Bulgarian). 15 (1): 42–46. PMID 1269462.
^ Tiutiulkova NI, Gorancheva I (1975). "[Excretion of dopamine, noradrenaline, adrenaline, vanilmandelic acid and 5-hydroxyindoleacetic acid in the urine of volunteers treated with adepren]". Eksperimentalna Meditsina I Morfologiia (in Bulgarian). 14 (4): 187–189. PMID 1222713.
^ Khare CP (2007). "Echinops echinatus Roxb.". Indian Medicinal Plants An Illustrated Dictionary. Springer-Verlag Berlin Heidelberg. ISBN 978-0-387-70637-5.

Antidepressants (N06A)

Specific reuptake inhibitors and/or receptor modulators

SSRIsTooltip Selective serotonin reuptake inhibitors	Citalopram Escitalopram Fluoxetine^# Fluvoxamine Indalpine^‡ Paroxetine Sertraline Zimelidine^‡
SNRIsTooltip Serotonin–norepinephrine reuptake inhibitors	Desvenlafaxine Duloxetine Levomilnacipran Milnacipran Tofenacin Venlafaxine
NRIsTooltip Norepinephrine reuptake inhibitors	Atomoxetine Reboxetine Viloxazine
NDRIsTooltip Norepinephrine–dopamine reuptake inhibitors	Amineptine^‡ Bupropion Nomifensine^‡
NaSSAsTooltip Noradrenergic and specific serotonergic antidepressants	Mianserin Mirtazapine Setiptiline
SARIsTooltip Serotonin antagonist and reuptake inhibitors	Etoperidone Nefazodone Trazodone
SMSTooltip Serotonin modulator and stimulators	Vilazodone Vortioxetine
Others	Agomelatine Amisulpride Dextromethorphan/bupropion Esketamine Etryptamine^‡ Gepirone Indeloxazine Flupentixol Ketamine^§ Medifoxamine^‡ Metryptamine^‡ Oxaflozane^‡ Pivagabine^‡ Tandospirone Teniloxazine Tianeptine

Tricyclic and tetracyclic antidepressants

TCAsTooltip Tricyclic antidepressants	Amineptine^‡ Amitriptyline^# Amitriptylinoxide Amoxapine Butriptyline^‡ Clomipramine^# Demexiptiline^‡ Desipramine Dibenzepin Dimetacrine^‡ Dosulepin Doxepin Imipramine Imipraminoxide^‡ Iprindole^‡ Lofepramine Melitracen Metapramine^‡ Nitroxazepine Nortriptyline Noxiptiline Opipramol Pipofezine Propizepine^‡ Protriptyline Quinupramine^‡ Tianeptine Trimipramine
TeCAsTooltip Tetracyclic antidepressants	Maprotiline Mianserin Mirtazapine Setiptiline
Others	Tiazesim

Monoamine oxidase inhibitors

Non-selective	Irreversible: Benmoxin^‡ Iproclozide^‡ Iproniazid^‡ Isocarboxazid Isoniazid^# Linezolid^# Mebanazine^‡ Nialamide^‡ Octamoxin^‡ Phenelzine Pheniprazine^‡ Phenoxypropazine^‡ Pivhydrazine^‡ Safrazine^‡ Tedizolid Tranylcypromine Reversible: Caroxazone^‡ Mixed: Bifemelane
MAO_ATooltip Monoamine oxidase A-selective	Reversible: Eprobemide Metralindole Minaprine^‡ Moclobemide Pirlindole Tetrindole Toloxatone
MAO_BTooltip Monoamine oxidase B-selective	Irreversible: Selegiline

Adjunctive therapies
Atypical antipsychotics (aripiprazole, brexpiprazole, lurasidone, olanzapine, quetiapine, risperidone) Buspirone Lithium (lithium carbonate, lithium citrate) Thyroid hormones (triiodothyronine (T₃), levothyroxine (T₄))

Miscellaneous
Ademetionine (SAMe) GABAkine neurosteroids (brexanolone, zuranolone) Hypericum perforatum (St. John's Wort) Oxitriptan (5-HTP) Rubidium chloride (RbCl) Tryptophan

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

v t e Anxiolytics (N05B)
5-HT_1ARTooltip 5-HT1A receptor agonists	Buspirone Gepirone Tandospirone
GABA_ARTooltip GABAA receptor PAMsTooltip positive allosteric modulators	Benzodiazepines: Adinazolam Alprazolam Bromazepam Camazepam Chlordiazepoxide Clobazam Clonazepam Clorazepate Clotiazepam Cloxazolam Diazepam^# Ethyl loflazepate Etizolam Fludiazepam Halazepam Ketazolam Lorazepam^# Medazepam Nordazepam Oxazepam Pinazepam Prazepam; Others: Alpidem^‡ Barbiturates (e.g., phenobarbital) Carbamates (e.g., meprobamate) Carisoprodol Chlormezanone^‡ Ethanol (alcohol) Etifoxine
Hypnotics	Zopiclone
Gabapentinoids (α₂δ VDCC blockers)	Gabapentin Gabapentin enacarbil Phenibut Pregabalin
Antidepressants	SSRIsTooltip Selective serotonin reuptake inhibitors (e.g., escitalopram) SNRIsTooltip Serotonin-norepinephrine reuptake inhibitors (e.g., duloxetine) SARIsTooltip Serotonin antagonist and reuptake inhibitors (e.g., trazodone) TCAsTooltip Tricyclic antidepressants (e.g., clomipramine^#) TeCAsTooltip Tetracyclic antidepressants (e.g., mirtazapine) MAOIsTooltip Monoamine oxidase inhibitors (e.g., phenelzine); Others: Agomelatine Bupropion Tianeptine Vilazodone Vortioxetine
Antipsychotics	Quetiapine Flupentixol
Sympatholytics (Antiadrenergics)	Alpha-1 blockers (e.g., prazosin) Alpha-2 agonists (e.g., clonidine, dexmedetomidine, guanfacine) Beta blockers (e.g., propranolol)
Others	Benzoctamine Cycloserine Fabomotizole Hydroxyzine Lorpiprazole Mebicar Mepiprazole Nicotine Opipramol Oxaflozane^‡ Phenaglycodol Phenibut Picamilon Selank Tiagabine Tofisopam Validolum
^#WHO-EM ^‡Withdrawn from market Clinical trials: ^†Phase III ^§Never to phase III

Monoamine metabolism modulators

Non-specific

AAADTooltip Aromatic L-amino acid decarboxylase

Substrates→Products: L-DOPA (levodopa)→Dopamine
5-HTP→Serotonin
L-Histidine→Histamine
Phenylalanine→Phenethylamine
L-Tyrosine→Tyramine
Tryptophan→Tryptamine

MAOTooltip Monoamine oxidase

Substrates→Products (with ALDHTooltip Aldehyde dehydrogenase/ALRTooltip ALR): Epinephrine (adrenaline)→DHMA Metanephrine→MHPG/VMA Norepinephrine (noradrenaline)→DHMA Normetanephrine→MHPG/VMA Dopamine→DOPAC 3-Methoxytyramine→HVA Serotonin→5-HIAA Inhibitors: Non-selective: Benmoxin Caroxazone Echinopsidine Furazolidone Guineesine Hydralazine Indantadol Iproclozide Iproniazid Isocarboxazid Isoniazid Linezolid Mebanazine Metfendrazine Nialamide Octamoxin Paraxazone Phenelzine Pheniprazine Phenoxypropazine Pivhydrazine Procarbazine Safrazine Tranylcypromine
Inhibitors: MAO-A-selective: Amiflamine Bazinaprine Befloxatone Brofaromine Cimoxatone Clorgiline CX157 (Tyrima) Eprobemide Esuprone Harmala alkaloids (e.g., harmine, harmaline, harman, norharman, tetrahydroharmine) Methylene blue Metralindole Minaprine Moclobemide Pirlindole Sercloremine Tetrindole Toloxatone
Inhibitors: MAO-B selective: Adarigiline Almoxatone D-Deprenyl Ethanol Ladostigil Lazabemide Milacemide Mofegiline Nicotine Pargyline^‡ Rasagiline Safinamide Selegiline (L-Deprenyl) Sembragiline

Phenethylamines
(dopamine, epinephrine,
norepinephrine)

PAHTooltip Phenylalanine hydroxylase	Substrates→Products: Phenylalanine→Tyrosine Inhibitors: 3,4-Dihydroxystyrene
THTooltip Tyrosine hydroxylase	Substrates→Products: Tyrosine→L-DOPA (levodopa) Inhibitors: 2-Hydroxyestradiol 2-Hydroxyestrone 3-Iodotyrosine Aquayamycin Bulbocapnine Metirosine Oudenone
DBHTooltip Dopamine beta-monooxygenase	Substrates→Products: Dopamine→Norepinephrine (Noradrenaline) Inhibitors: Bupicomide Disulfiram Dopastin Fusaric acid Nepicastat Phenopicolinic acid Tropolone
PNMTTooltip Phenylethanolamine N-methyltransferase	Substrates→Products: Norepinephrine (noradrenaline)→Epinephrine (adrenaline) Inhibitors: CGS-19281A SKF-64139 SKF-7698
COMTTooltip Catechol-O-methyl transferase	Substrates→Products: Dopamine→3-Methoxytyramine DOPAC→Homovanillic acid Norepinephrine→Normetanephrine Epinephrine→Metanephrine DOPEG→MOPEG DOMA→VMA 2-Hydroxyestradiol→2-Methoxyestradiol 2-Hydroxyestrone→2-Methoxyestrone 4-Hydroxyestradiol→4-Methoxyestradiol 4-Hydroxyestrone→4-Methoxyestrone Inhibitors: 2-Hydroxyestradiol 2-Hydroxyestrone Entacapone Neluxicapone Nitecapone Opicapone Quinalizarin Tolcapone

Tryptamines
(serotonin, melatonin)

TPHTooltip Tryptophan hydroxylase	Substrates→Products: Tryptophan→5-HTP Inhibitors: AGN-2979 Fenclonine (PCPA) Telotristat ethyl
AANATTooltip Serotonin N-acetyl transferase	Substrates→Products: Serotonin→N-Acetylserotonin
ASMTTooltip Acetylserotonin O-methyltransferase	Substrates→Products: N-Acetylserotonin→Melatonin

Histamine

HDCTooltip Histidine decarboxylase	Substrates→Products: L-Histidine→Histamine Inhibitors: Catechin Alpha-Fluoromethylhistidine Histidine methyl ester Meciadanol Naringenin Tritoqualine
HNMTTooltip Histamine N-methyltransferase	Substrates→Products: Histamine→N-Methylhistamine Inhibitors: Amodiaquine Diphenhydramine Harmaline Metoprine Quinacrine SKF-91488 Tacrine
DAOTooltip Diamine oxidase	Substrates→Products: Histamine→Imidazole acetic acid Inhibitors: Pimagedine (aminoguanidine)

See also: Receptor/signaling modulators • Adrenergics • Dopaminergics • Melatonergics • Serotonergics • Monoamine reuptake inhibitors • Monoamine releasing agents • Monoamine neurotoxins