Cyclic compounds (1)
Asimadoline (EMD-61753) is a drug which acts as a peripherally selective κ-opioid receptor (KOR) agonist. Because of its poor ability to cross the blood–brain barrier, asimadoline lacks the psychotomimetic effects of centrally acting KOR agonists, and consequently has more potential for medical use, and has been researched as a possible treatment for irritable bowel syndrome, with reasonable efficacy seen in clinical trials.
Bremazocine (83829-76-9, 75684-07-0, 79665-42-2)
bremazocine hydrochloride, (2R)-isomer · bremazocine hydrochloride, (+-)-isomer · 2-(1-hydroxy-cyclopropylmethyl)-5-ethyl-9,9-dimethyl-2'-hydroxy-6,7-benzomorphan
Bremazocine is a κ-opioid receptor agonist related to pentazocine. It has potent and long-lasting analgesic and diuretic effects. It has 200 times the activity of morphine, but appears to have no addictive properties and does not depress breathing.
Coramine · Coramin · Cordiamine
Nikethamide is a stimulant which mainly affects the respiratory cycle. Widely known by its former trade name of Coramine, it was used in the mid-twentieth century as a medical countermeasure against tranquilizer overdoses, before the advent of endotracheal intubation and positive-pressure lung expansion. It is no longer commonly considered to be of value for such purposes.
Spiroperidol · Spiroperone
Spiperone (Spiroperidol; brand name: Spiropitan (JP)) is a typical antipsychotic and research chemical belonging to the butyrophenone chemical class. It is licensed for clinical use in Japan as a treatment for schizophrenia. Additionally, spiperone was identified by compound screening to be an activator of Ca2+ activated Cl− channels (CaCCs), thus a potential target for therapy of cystic fibrosis.
Ro 48-8071 (161582-11-2)
Ro 48-8071hydrochloride · (4'-(6-allylmethylaminohexyloxy)-2'-fluorophenyl)-4-(4-bromophenyl)methanone fumarate · Ro-48-8071
Epibatidine is a putative alkaloid that is secreted by the Ecuadoran frog Epipedobates anthonyi. It was discovered by John W. Daly in 1974, but its structure was not fully elucidated until 1992.
Spiroxatrine is a drug which acts as a selective antagonist at both the 5-HT1A receptor and the α2C adrenergic receptor. It is an analog of spiperone and also has some dopamine antagonist effects.
WIN VI (98034-30-1)
Win 52035 · WIN 52035-2 · 5-(5-(4-(4,5-dihydro-2-oxazolyl)phenoxy)pentyl)-3-methylisoxazole
TFMPP · 1-(m-trifluoromethylphenyl)piperazine · 1-(3-trifluoromethylphenyl)piperazine
3-Trifluoromethylphenylpiperazine (TFMPP) is a recreational drug of the piperazine chemical class. Usually in combination with its analogue benzylpiperazine (BZP), it is sold as an alternative to the illicit drug MDMA ("Ecstasy") under the name "Legal X".
Spiradoline (U-62066) is a drug which acts as a highly selective κ-opioid agonist. It has analgesic, diuretic and antitussive effects, and produces subjective effects in animals similar to those of ketazocine and alazocine. The main effect in humans is sedation, along with analgesic and diuretic effects, but significant side effects such as dysphoria and hallucinations have stopped it from being used clinically.
Pravadoline (WIN 48,098) is an antiinflammatory and analgesic drug with an IC50 of 4.9 µM and a Ki of 2511 nM at CB1, related in structure to nonsteroidal anti-inflammtory drugs (NSAIDs) such as indometacin. It was developed in the 1980s as a new antiinflammatory and prostaglandin synthesis inhibitor, acting through inhibition of the enzyme cyclooxygenase (COX). However, pravadoline was found to exhibit unexpectedly strong analgesic effects, which appeared at doses ten times smaller than the effective anti-inflammatory dose and so could not be explained by its action as a COX inhibitor.
5alpha-Pregnane-3,20-dione · 3,20-Allopregnanedione, (5beta,13alpha,17alpha)-Isomer · 5 alpha-Pregnane-3,20-dione
SKF-97,541 is a compound used in scientific research which acts primarily as a selective GABAB receptor agonist. It has sedative effects in animal studies and is widely used in research into potential treatment of various types of drug addiction.
M99 · Ethorphine
Rimcazole is an antagonist of the sigma receptor as well as a dopamine reuptake inhibitor. Sigma receptors are thought to be involved in the drug psychosis that can be induced by some drugs such as phencyclidine and cocaine, and rimcazole was originally researched as a potential antipsychotic with a different mechanism of action to traditional antipsychotic drugs. Trials proved inconclusive and rimcazole was not pursued for this application, but other sigma antagonists continue to be researched for a variety of potential applications.
Enadoline is a drug which acts as a highly selective κ-opioid agonist. In human studies, it produced visual distortions and feelings of dissociation, reminiscent of the effects of salvinorin A. It was studied as a potential analgesic, but abandoned because of the dose-limiting effects of dysphoria, which could be expected from a κ-opioid agonist.
Trioxifene (INN) (developmental code name LY-133,314), or as the salt trioxifene mesylate (USAN), is a selective estrogen receptor modulator (SERM) with competitive binding activity against estradiol for the ERα and antagonistic activity against ERα-mediated gene expression, that was under preclinical and clinical development by Eli Lilly and Company for breast cancer and prostate cancer, but was abandoned.