From Wikipedia, the free encyclopedia
Pregnanolone
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Names
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IUPAC name
(3α,5β)-3-Hydroxypregnan-20-one
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Other names
Eltanolone; 5β-Pregnan-3α-ol-20-one; 3α-Hydroxy-5β-pregnan-20-one; 3α-Hydroxy-5β-tetrahydroprogesterone
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Identifiers
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ChEBI
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ChEMBL
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ChemSpider
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ECHA InfoCard
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100.162.192
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InChI=1S/C21H34O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h14-19,23H,4-12H2,1-3H3/t14-,15-,16+,17-,18+,19+,20+,21-/m1/s1 Key: AURFZBICLPNKBZ-YZRLXODZSA-N InChI=1/C21H34O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h14-19,23H,4-12H2,1-3H3/t14-,15-,16+,17-,18+,19+,20+,21-/m1/s1 Key: AURFZBICLPNKBZ-YZRLXODZBF
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CC(=O)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC[C@H]4[C@@]3(CC[C@H](C4)O)C)C
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Properties
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C21H34O2
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Molar mass
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318.501 g·mol−1
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
This article is about the 3α,5β-reduced metabolite of progesterone. For other pregnanolone isomers of progesterone, see
Pregnanolone (disambiguation).
Pregnanolone, also known as eltanolone (INN), as well as 3α,5β-tetrahydroprogesterone (3α,5β-THP) or 3α-hydroxy-5β-pregnan-20-one, is an endogenous neurosteroid that is biosynthesized from progesterone.[1] It is a positive allosteric modulator of the GABAA receptor,[1] as well as a negative allosteric modulator of the glycine receptor,[2] and is known to have sedative, anxiolytic, anesthetic, and anticonvulsant effects.[1][2][3] It was investigated for clinical use as a general anesthetic, but produced unwanted side effects such as convulsions on occasion, and for that reason was never marketed.[2][4]
See also
References
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Alcohols | |
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Barbiturates | |
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Benzodiazepines | |
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Carbamates | |
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Flavonoids | |
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Imidazoles | |
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Kava constituents | |
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Monoureides | |
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Neuroactive steroids | |
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Nonbenzodiazepines | |
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Phenols | |
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Piperidinediones | |
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Pyrazolopyridines | |
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Quinazolinones | |
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Volatiles/gases | |
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Others/unsorted |
- 3-Hydroxybutanal
- α-EMTBL
- AA-29504
- Alogabat
- Avermectins (e.g., ivermectin)
- Bromide compounds (e.g., lithium bromide, potassium bromide, sodium bromide)
- Carbamazepine
- Chloralose
- Chlormezanone
- Clomethiazole
- Darigabat
- DEABL
- Deuterated etifoxine
- Dihydroergolines (e.g., dihydroergocryptine, dihydroergosine, dihydroergotamine, ergoloid (dihydroergotoxine))
- DS2
- Efavirenz
- Etazepine
- Etifoxine
- Fenamates (e.g., flufenamic acid, mefenamic acid, niflumic acid, tolfenamic acid)
- Fluoxetine
- Flupirtine
- Hopantenic acid
- KRM-II-81
- Lanthanum
- Lavender oil
- Lignans (e.g., 4-O-methylhonokiol, honokiol, magnolol, obovatol)
- Loreclezole
- Menthyl isovalerate (validolum)
- Monastrol
- Niacin
- Niacinamide
- Org 25,435
- Phenytoin
- Propanidid
- Retigabine (ezogabine)
- Safranal
- Seproxetine
- Stiripentol
- Sulfonylalkanes (e.g., sulfonmethane (sulfonal), tetronal, trional)
- Terpenoids (e.g., borneol)
- Topiramate
- Valerian constituents (e.g., isovaleric acid, isovaleramide, valerenic acid, valerenol)
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Ionotropic | GABAATooltip γ-Aminobutyric acid A receptor |
- Positive modulators (abridged; see here for a full list): α-EMTBL
- Alcohols (e.g., drinking alcohol, 2M2B)
- Anabolic steroids
- Avermectins (e.g., ivermectin)
- Barbiturates (e.g., phenobarbital)
- Benzodiazepines (e.g., diazepam)
- Bromide compounds (e.g., potassium bromide)
- Carbamates (e.g., meprobamate)
- Carbamazepine
- Chloralose
- Chlormezanone
- Clomethiazole
- Dihydroergolines (e.g., ergoloid (dihydroergotoxine))
- Etazepine
- Etifoxine
- Fenamates (e.g., mefenamic acid)
- Flavonoids (e.g., apigenin, hispidulin)
- Fluoxetine
- Flupirtine
- Imidazoles (e.g., etomidate)
- Kava constituents (e.g., kavain)
- Lanthanum
- Loreclezole
- Monastrol
- Neuroactive steroids (e.g., allopregnanolone, cholesterol, THDOC)
- Niacin
- Niacinamide
- Nonbenzodiazepines (e.g., β-carbolines (e.g., abecarnil), cyclopyrrolones (e.g., zopiclone), imidazopyridines (e.g., zolpidem), pyrazolopyrimidines (e.g., zaleplon))
- Norfluoxetine
- Petrichloral
- Phenols (e.g., propofol)
- Phenytoin
- Piperidinediones (e.g., glutethimide)
- Propanidid
- Pyrazolopyridines (e.g., etazolate)
- Quinazolinones (e.g., methaqualone)
- Retigabine (ezogabine)
- ROD-188
- Skullcap constituents (e.g., baicalin)
- Stiripentol
- Sulfonylalkanes (e.g., sulfonmethane (sulfonal))
- Topiramate
- Valerian constituents (e.g., valerenic acid)
- Volatiles/gases (e.g., chloral hydrate, chloroform, diethyl ether, paraldehyde, sevoflurane)
- Negative modulators: 1,3M1B
- 3M2B
- 11-Ketoprogesterone
- 17-Phenylandrostenol
- α3IA
- α5IA (LS-193,268)
- β-CCB
- β-CCE
- β-CCM
- β-CCP
- β-EMGBL
- Anabolic steroids
- Amiloride
- Anisatin
- β-Lactams (e.g., penicillins, cephalosporins, carbapenems)
- Basmisanil
- Bemegride
- Bicyclic phosphates (TBPS, TBPO, IPTBO)
- BIDN
- Bilobalide
- Bupropion
- CHEB
- Chlorophenylsilatrane
- Cicutoxin
- Cloflubicyne
- Cyclothiazide
- DHEA
- DHEA-S
- Dieldrin
- (+)-DMBB
- DMCM
- DMPC
- EBOB
- Etbicyphat
- FG-7142 (ZK-31906)
- Fiproles (e.g., fipronil)
- Flavonoids (e.g., amentoflavone, oroxylin A)
- Flumazenil
- Fluoroquinolones (e.g., ciprofloxacin)
- Flurothyl
- Furosemide
- Golexanolone
- Iomazenil (123I)
- IPTBO
- Isopregnanolone (sepranolone)
- L-655,708
- Laudanosine
- Lindane
- MaxiPost
- Morphine
- Morphine-3-glucuronide
- MRK-016
- Naloxone
- Naltrexone
- Nicardipine
- Nonsteroidal antiandrogens (e.g., apalutamide, bicalutamide, enzalutamide, flutamide, nilutamide)
- Oenanthotoxin
- Pentylenetetrazol (pentetrazol)
- Phenylsilatrane
- Picrotoxin (i.e., picrotin, picrotoxinin and dihydropicrotoxinin)
- Pregnenolone sulfate
- Propybicyphat
- PWZ-029
- Radequinil
- Ro 15-4513
- Ro 19-4603
- RO4882224
- RO4938581
- Sarmazenil
- SCS
- Suritozole
- TB-21007
- TBOB
- TBPS
- TCS-1105
- Terbequinil
- TETS
- Thujone
- U-93631
- Zinc
- ZK-93426
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GABAA-ρTooltip γ-Aminobutyric acid A-rho receptor | |
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Metabotropic | GABABTooltip γ-Aminobutyric acid B receptor | |
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Receptor (ligands) | GlyRTooltip Glycine receptor |
- Positive modulators: Alcohols (e.g., brometone, chlorobutanol (chloretone), ethanol (alcohol), tert-butanol (2M2P), tribromoethanol, trichloroethanol, trifluoroethanol)
- Alkylbenzene sulfonate
- Anandamide
- Barbiturates (e.g., pentobarbital, sodium thiopental)
- Chlormethiazole
- D12-116
- Dihydropyridines (e.g., nicardipine)
- Etomidate
- Ginseng constituents (e.g., ginsenosides (e.g., ginsenoside-Rf))
- Glutamic acid (glutamate)
- Ivermectin
- Ketamine
- Neuroactive steroids (e.g., alfaxolone, pregnenolone (eltanolone), pregnenolone acetate, minaxolone, ORG-20599)
- Nitrous oxide
- Penicillin G
- Propofol
- Tamoxifen
- Tetrahydrocannabinol
- Triclofos
- Tropeines (e.g., atropine, bemesetron, cocaine, LY-278584, tropisetron, zatosetron)
- Volatiles/gases (e.g., chloral hydrate, chloroform, desflurane, diethyl ether (ether), enflurane, halothane, isoflurane, methoxyflurane, sevoflurane, toluene, trichloroethane (methyl chloroform), trichloroethylene)
- Xenon
- Zinc
- Antagonists: 2-Aminostrychnine
- 2-Nitrostrychnine
- 4-Phenyl-4-formyl-N-methylpiperidine
- αEMBTL
- Bicuculline
- Brucine
- Cacotheline
- Caffeine
- Colchicine
- Colubrine
- Cyanotriphenylborate
- Dendrobine
- Diaboline
- Endocannabinoids (e.g., 2-AG, anandamide (AEA))
- Gaboxadol (THIP)
- Gelsemine
- iso-THAZ
- Isobutyric acid
- Isonipecotic acid
- Isostrychnine
- Laudanosine
- N-Methylbicuculline
- N-Methylstrychnine
- N,N-Dimethylmuscimol
- Nipecotic acid
- Pitrazepin
- Pseudostrychnine
- Quinolines (e.g., 4-hydroxyquinoline, 4-hydroxyquinoline-3-carboxylic acid, 5,7-CIQA, 7-CIQ, 7-TFQ, 7-TFQA)
- RU-5135
- Sinomenine
- Strychnine
- Thiocolchicoside
- Tutin
- Negative modulators: Amiloride
- Benzodiazepines (e.g., bromazepam, clonazepam, diazepam, flunitrazepam, flurazepam)
- Corymine
- Cyanotriphenylborate
- Daidzein
- Dihydropyridines (e.g., nicardipine, nifedipine, nitrendipine)
- Furosemide
- Genistein
- Ginkgo constituents (e.g., bilobalide, ginkgolides (e.g., ginkgolide A, ginkgolide B, ginkgolide C, ginkgolide J, ginkgolide M))
- Imipramine
- NBQX
- Neuroactive steroids (e.g., 3α-androsterone sulfate, 3β-androsterone sulfate, deoxycorticosterone, DHEA sulfate, pregnenolone sulfate, progesterone)
- Opioids (e.g., codeine, dextromethorphan, dextrorphan, levomethadone, levorphanol, morphine, oripavine, pethidine, thebaine)
- Picrotoxin (i.e., picrotin and picrotoxinin)
- PMBA
- Riluzole
- Tropeines (e.g., bemesetron, LY-278584, tropisetron, zatosetron)
- Verapamil
- Zinc
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NMDARTooltip N-Methyl-D-aspartate receptor | |
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Transporter (blockers) | GlyT1Tooltip Glycine transporter 1 | |
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GlyT2Tooltip Glycine transporter 2 | |
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CARTooltip Constitutive androstane receptor | |
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PXRTooltip Pregnane X receptor | |
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