Chemistry:SPT-320

SPT-320, also formerly known as LYT-320, is a prodrug of agomelatine which is under development for the treatment of mood and anxiety disorders, for instance generalized anxiety disorder.^[1]^[2]

As an agomelatine prodrug, it acts as a melatonin receptor agonist and as a serotonin 5-HT_2B and 5-HT_2C receptor antagonist.^[1]^[2] The drug is taken by mouth and is said to bypass first-pass hepatic metabolism.^[1]^[2]

As of December 2023, SPT-320 is in the preclinical research phase of development.^[1]^[2] It is under development by Seaport Therapeutics and is being developed towards approval in the United States.^[1]^[2] The chemical structure of SPT-320 does not yet appear to have been disclosed.^[1]

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 "SPT-320 - Seaport Therapeutics". 2 January 2024. https://adisinsight.springer.com/drugs/800076710.
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 "Delving into the Latest Updates on SPT-320 with Synapse". 21 November 2024. https://synapse.patsnap.com/drug/2d236dc71b5847c388dc8bdf3c029402. "By leveraging Glyph, SPT-320 bypasses liver first-pass metabolism, allowing for lower dosing and reduced liver exposure."

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[AdisInsight-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 "SPT-320 - Seaport Therapeutics". 2 January 2024. https://adisinsight.springer.com/drugs/800076710.

[Synapse-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 "Delving into the Latest Updates on SPT-320 with Synapse". 21 November 2024. https://synapse.patsnap.com/drug/2d236dc71b5847c388dc8bdf3c029402. "By leveraging Glyph, SPT-320 bypasses liver first-pass metabolism, allowing for lower dosing and reduced liver exposure."

[1]

[2]

v t e Melatonin receptor modulators
MT₁	Agonists: 6-Hydroxymelatonin Agomelatine Fabomotizole (afobazole) GR-196,429 Melatonin N-Acetylserotonin (normelatonin) Piromelatine Ramelteon Tasimelteon TIK-301 (LY-156,735) Antagonists: Luzindole
MT₂	Agonists: 6-Hydroxymelatonin Agomelatine GR-196,429 Melatonin N-Acetylserotonin (normelatonin) Piromelatine Ramelteon Tasimelteon TIK-301 (LY-156,735) Antagonists: Luzindole
Unsorted	Agonists: 2-Iodomelatonin 2-Phenylmelatonin 5-Methoxyluzindole 6-Chloromelatonin 6-Fluoromelatonin 6-Methoxymelatonin 6,7-Dichloro-2-methylmelatonin 8-M-PDOT AMMTC GR-135,531 (of MT₃) N-Acetyltryptamine N-Butanoylmelatonin N-Propionylmelatonin S-24268 S-25150 Antagonists: 4-P-ADOT 4-P-PDOT DH-97 N-Acetyltryptamine (of MT₃) Prazosin (of MT₃) S-20928 S-22153 S-24601 S-25567 S-26131
See also: Receptor/signaling modulators Adrenergics Dopaminergics Serotonergics Monoamine metabolism modulators

v t e Phenethylamines
Phenethylamines	Psychedelics: 25B-NBOMe 25C-NBOMe 25D-NBOMe 25I-NBOMe 25N-NBOMe 2C-B 2C-B-AN 2C-Bn 2C-Bu 2C-C 2C-CN 2C-CP 2C-D 2C-E 2C-EF 2C-F 2C-G 2C-G-1 2C-G-2 2C-G-3 2C-G-4 2C-G-5 2C-G-6 2C-G-N 2C-H 2C-I 2C-iP 2C-N 2C-NH2 2C-O 2C-O-4 2C-P 2C-Ph 2C-SE 2C-T 2C-T-2 2C-T-3 2C-T-4 2C-T-5 2C-T-6 2C-T-7 2C-T-8 2C-T-9 2C-T-10 2C-T-11 2C-T-12 2C-T-13 2C-T-14 2C-T-15 2C-T-16 2C-T-17 2C-T-18 2C-T-19 2C-T-20 2C-T-21 2C-T-22 2C-T-22.5 2C-T-23 2C-T-24 2C-T-25 2C-T-27 2C-T-28 2C-T-30 2C-T-31 2C-T-32 2C-T-33 2C-TFE 2C-TFM 2C-YN 2C-V Allylescaline DESOXY Escaline Isoproscaline Jimscaline Macromerine MEPEA Mescaline Metaescaline Methallylescaline Proscaline Psi-2C-T-4 TCB-2 Stimulants: Phenylethanolamine Hordenine Phenethylamine α-Methylphenethylamine (amphetamine) β-Methylphenethylamine m-Methylphenethylamine N-Methylphenethylamine o-Methylphenethylamine p-Methylphenethylamine Methylphenidate Entactogens: Lophophine MDPEA MDMPEA Others: BOH DMPEA
Amphetamines	Psychedelics: 3C-BZ 3C-E 3C-P Aleph Beatrice Bromo-DragonFLY D-Deprenyl DMA DMCPA DMMDA DOB DOC DOEF DOET DOI DOM DON DOPR DOTFM Ganesha MMDA MMDA-2 Psi-DOM TMA TeMA Stimulants: 2-FA 2-FMA 3-FA 3-FMA Acridorex Alfetamine Amfecloral Amfepentorex Amphetamine (Dextroamphetamine, Levoamphetamine) Amphetaminil Benfluorex Benzphetamine Cathine Clobenzorex Dimethylamphetamine Ephedrine Etilamfetamine Fencamfamin Fencamine Fenethylline Fenfluramine (Dexfenfluramine, Levofenfluramine) Fenproporex Flucetorex Fludorex Formetorex Furfenorex Gepefrine 4-Hydroxyamphetamine Iofetamine Isopropylamphetamine Lefetamine Lisdexamfetamine Mefenorex Metaraminol Methamphetamine (Dextromethamphetamine, Levomethamphetamine) Methoxyphenamine MMA Morforex Norfenfluramine L -Norpseudoephedrine N,alpha-Diethylphenylethylamine Oxifentorex Oxilofrine Ortetamine PBA PCA Phenpromethamine PFA PFMA PIA PMA PMEA PMMA Phenylpropanolamine Pholedrine Prenylamine Propylamphetamine Pseudoephedrine Sibutramine Tiflorex Tranylcypromine Xylopropamine Zylofuramine Entactogens: 4-FA 4-FMA 4-MA 4-MMA 4-MTA 5-APB 5-APDB 5-EAPB 5-IT 5-MAPB 5-MAPDB 6-APB 6-APDB 6-Chloro-MDMA 6-EAPB 6-IT 6-MAPB 6-MAPDB EDA IAP 2,3-MDA 3,4-MDA (tenamfetamine) MDEA MDHMA MDMA (midomafetamine) MDOH Methamnetamine MMDMA Naphthylaminopropane TAP Others: 3,4-DCA Amiflamine DiFMDA Selegiline (also D -Deprenyl)
Phentermines	Stimulants: Chlorphentermine Cloforex Clortermine Etolorex Mephentermine Pentorex Phentermine Entactogens: MDPH MDMPH Others: Cericlamine
Cathinones	Stimulants: 3-FMC 4-MC 4-BMC 4-CMC 4-EMC 4-FMC 4-MEC 4-MeMABP 4-MPD Amfepramone Benzedrone Brephedrone Buphedrone Bupropion Cathinone Dimethylcathinone Ethcathinone Eutylone Hydroxybupropion Methcathinone Methedrone NEB N-Ethylhexedrone N-Ethylpentedrone Pentedrone Pentylone Radafaxine Entactogens: 3,4-DMMC 3-MMC Butylone Ethylone Methylone Methylenedioxycathinone Mephedrone
Phenylisobutylamines	Entactogens: 4-CAB 4-MAB Ariadne BDB Butylone EBDB Eutylone MBDB Stimulants: Phenylisobutylamine
Phenylalkylpyrrolidines	Stimulants: α-PBP α-PHP α-PPP α-PVP MDPBP MDPPP MDPV 4-MePBP 4-MePHP 4-MePPP MOPPP MOPVP MPBP MPHP MPPP Naphyrone PEP Prolintane Pyrovalerone
Catecholamines (and close relatives)	6-FNE 6-OHDA a-Me-DA a-Me-TRA Adrenochrome Ciladopa D -DOPA (Dextrodopa) Dimetofrine Dopamine Epinephrine Epinine Etilefrine Ethylnorepinephrine Fenclonine Ibopamine Isoprenaline Isoetarine L -DOPA (Levodopa) L -DOPS (Droxidopa) L -Phenylalanine L -Tyrosine m-Tyramine Metanephrine Metaraminol Metaterol Metirosine Methyldopa N,N-Dimethyldopamine Nordefrin (Levonordefrin) Norepinephrine Norfenefrine (m-Octopamine) Normetanephrine Orciprenaline p-Octopamine p-Tyramine Phenylephrine Synephrine
Miscellaneous	AL-LAD Amidephrine Arbutamine Cafedrine Denopamine Desvenlafaxine Diphenidine Dizocilpine Dobutamine Dopexamine Ephenidine Etafedrine ETH-LAD Famprofazone Fluorolintane Hexapradol IP-LAD Lysergic acid amide Lysergic acid 2-butyl amide Lysergic acid 2,4-dimethylazetidide Lysergic acid diethylamide Methoxamine Methoxphenidine MT-45 PARGY-LAD Phenibut PRO-LAD Pronethalol Salbutamol (Levosalbutamol) Solriamfetol Theodrenaline Thiamphenicol UWA-101

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