Talsupram

Last updated

Talsupram
Talsupram.svg
Clinical data
Routes of
administration
Oral
ATC code
  • none
Legal status
Legal status
  • In general: uncontrolled
Identifiers
  • 3-(3,3-dimethyl-1-phenyl-2-benzothiophen-1-yl)-N-methyl-propan-1-amine
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
Chemical and physical data
Formula C20H25NS
Molar mass 311.49 g·mol−1

Talsupram (Lu 5-005 or Lu 5-003 [1] ) is a selective norepinephrine reuptake inhibitor (NRI) which was investigated as an antidepressant in the 1960s and 1970s but was never marketed. [2] [3] [4] Along with talopram, it is structurally related to the selective serotonin reuptake inhibitor (SSRI) citalopram. [5]

See also

Related Research Articles

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Talopram, also known as phthalapromine, is a selective norepinephrine reuptake inhibitor (NRI) which was researched for the management of depression in the 1960s and 1970s but was never commercialized. Along with talsupram, talopram is structurally related to the selective serotonin reuptake inhibitor (SSRI) citalopram, as well as to melitracen:

In 1971, the company hired Klaus Bøgesø as a medicinal chemist. Over the years Bøgesø turned out to have a Midas touch at the game of drug hunting, creating more molecules that made it to the market than almost any other medicinal chemist in the field. The challenge facing him in 1971 following his recruitment was to produce a selective norepinephrine reuptake inhibitor. Like other companies at the time, Lundbeck had little interest in an SSRI. Bøgesø began from an accident in the laboratory. Trying to create a derivative of their norepinephrine reuptake inhibiting antidepressant melitracen, Lundbeck chemists accidentally produced a new chemical — a phenylphthalene. Against all the odds, just like melitracen, this was also a selective norepinephrine reuptake inhibitor. Two potential antidepressants came out of this — talopram and tasulopram, which were pressed into clinical trials. Both however turned out to be energizing, and in a number of cases there were suicide attempts. The fact that there were suicide attempts appeared to confirm another proposal of Paul Kielholz, that activating antidepressants might lead to suicide. Lundbeck's experience suggested that norepinephrine reuptake inhibitors were likely to lead to just this problem. Lundbeck retreated, scared. If norepinephrine reuptake inhibitors were likely to trigger suicide, the greatest hazard of an antidepressant, then Kielholz's view suggested that an SSRI would be less likely to lead to suicide. Bøgesø's job was to see whether the new series of drugs could be converted into a series of SSRIs. Following a lead from Carlsson on how to do this, he converted talopram into citalopram, the most selective serotonin reuptake inhibitor to come to the market.

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<span class="mw-page-title-main">Selective serotonin reuptake inhibitor</span> Class of antidepressant medication

Selective serotonin reuptake inhibitors (SSRIs) are a class of drugs that are typically used as antidepressants in the treatment of major depressive disorder, anxiety disorders, and other psychological conditions.

A monoamine reuptake inhibitor (MRI) is a drug that acts as a reuptake inhibitor of one or more of the three major monoamine neurotransmitters serotonin, norepinephrine, and dopamine by blocking the action of one or more of the respective monoamine transporters (MATs), which include the serotonin transporter (SERT), norepinephrine transporter (NET), and dopamine transporter (DAT). This in turn results in an increase in the synaptic concentrations of one or more of these neurotransmitters and therefore an increase in monoaminergic neurotransmission.

Selective serotonin reuptake inhibitors, or serotonin-specific re-uptake inhibitor (SSRIs), are a class of chemical compounds that have application as antidepressants and in the treatment of depression and other psychiatric disorders. SSRIs are therapeutically useful in the treatment of panic disorder (PD), posttraumatic stress disorder (PTSD), social anxiety disorder, obsessive-compulsive disorder (OCD), premenstrual dysphoric disorder (PMDD), and anorexia. There is also clinical evidence of the value of SSRIs in the treatment of the symptoms of schizophrenia and their ability to prevent cardiovascular diseases.

References

  1. Carlsson A, Fuxe K, Hamberger B, Malmfors T (May 1969). "Effect of a new series of bicyclic compounds with potential thymoleptic properties on the reserpine-resistant uptake mechanism of central and peripheral monoamine neurones in vivo and in vitro". British Journal of Pharmacology. 36 (1): 18–28. doi: 10.1111/j.1476-5381.1969.tb08299.x . OCLC   6895508396. PMC   1703539 . PMID   5768100.
  2. Pawłowski L, Mazela H (June 1986). "Effects of antidepressant drugs, selective noradrenaline-or 5-hydroxytryptamine uptake inhibitors, on apomorphine-induced hypothermia in mice". Psychopharmacology. 88 (2): 240–246. doi:10.1007/BF00652248. OCLC   5653283278. PMID   3006113. S2CID   1732297.
  3. McConathy J, Owens MJ, Kilts CD, Malveaux EJ, Camp VM, Votaw JR, et al. (August 2004). "Synthesis and biological evaluation of [11C]talopram and [11C]talsupram: candidate PET ligands for the norepinephrine transporter". Nuclear Medicine and Biology. 31 (6): 705–718. doi:10.1016/j.nucmedbio.2003.05.001. PMID   15246361.
  4. Kelliher P, Kelly JP, Leonard BE, Sánchez C (April 2003). "Effects of acute and chronic administration of selective monoamine re-uptake inhibitors in the rat forced swim test". Psychoneuroendocrinology. 28 (3): 332–347. doi:10.1016/S0306-4530(02)00026-4. PMID   12573300. S2CID   23452713.
  5. "The SSRI Issues" (DOC). healyprozac.com. Retrieved January 3, 2024.