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Corynanthine

From Wikipedia, the free encyclopedia
Chemical compound
Pharmaceutical compound
Corynanthine
Clinical data
Other namesRauhimbine
Routes of
administration
Oral
ATC code
  • none
Legal status
Legal status
  • In general: uncontrolled
Identifiers
  • (16β,17α)-17-hydroxy-yohimban-16-carboxylic acid methyl ester
CAS Number
PubChemCID
IUPHAR/BPS
ChemSpider
UNII
CompTox Dashboard(EPA)
ECHA InfoCard100.006.901Edit this at Wikidata
Chemical and physical data
FormulaC21H26N2O3
Molar mass354.450 g·mol−1
3D model (JSmol)
  • O=C(OC)[C@H]5[C@H]4C[C@H]3c2[nH]c1ccccc1c2CCN3C[C@@H]4CC[C@@H]5O

Corynanthine, also known asrauhimbine, is analkaloid found in theRauvolfia andCorynanthe (includingPausinystalia) genera of plants.[1][2] It is one of the twodiastereoisomers ofyohimbine, the other beingrauwolscine.[3][4] It is also related toajmalicine.

Corynanthine acts as anα1-adrenergic andα2-adrenergic receptorantagonist with approximately 10-foldselectivity for the former site over the latter.[3][4] This is in contrast to yohimbine and rauwolscine which have around 30-fold higher affinity for the α2-adrenergic receptor over the α1-adrenergic receptor.[3][4] As a result, corynanthine is not astimulant (or anaphrodisiac for that matter), but adepressant, and likely plays a role in theantihypertensive properties ofRauvolfia extracts. Like yohimbine and rauwolscine, corynanthine has also been shown to possess some activity atserotonin receptors.[5]

See also

[edit]

References

[edit]
  1. ^PHILLIPS DD, CHADHA MS (September 1955). "The alkaloids of Rauwolfia serpentina Benth".Journal of the American Pharmaceutical Association.44 (9):553–67.doi:10.1002/jps.3030440912.PMID 13251932.
  2. ^"Alkaloids from Rauvolfia canescens; Pharmaceutical Biology - 39(3):Pages 239-240 - Informa Healthcare".Pharmaceutical Biology.doi:10.1076/phbi.39.3.239.5923.S2CID 85168336.
  3. ^abcShepperson NB, Duval N, Massingham R, Langer SZ (November 1981)."Pre- and postsynaptic alpha adrenoceptor selectivity studies with yohimbine and its two diastereoisomers rauwolscine and corynanthine in the anesthetized dog".The Journal of Pharmacology and Experimental Therapeutics.219 (2):540–6.PMID 6270312.
  4. ^abcDoxey JC, Lane AC, Roach AG, Virdee NK (February 1984). "Comparison of the alpha-adrenoceptor antagonist profiles of idazoxan (RX 781094), yohimbine, rauwolscine and corynanthine".Naunyn-Schmiedeberg's Archives of Pharmacology.325 (2):136–44.doi:10.1007/bf00506193.PMID 6144048.S2CID 24276613.
  5. ^Feuerstein TJ, Hertting G, Jackisch R (May 1985). "Endogenous noradrenaline as modulator of hippocampal serotonin (5-HT)-release. Dual effects of yohimbine, rauwolscine and corynanthine as alpha-adrenoceptor antagonists and 5-HT-receptor agonists".Naunyn-Schmiedeberg's Archives of Pharmacology.329 (3):216–21.doi:10.1007/bf00501871.PMID 2991775.S2CID 19770424.
Sympatholytic (and closely related)antihypertensives (C02)
Sympatholytics
(antagonizeα-adrenergic
vasoconstriction)
Central
α2-Adrenergic receptor agonists
Adrenergic release inhibitors
Imidazoline receptor agonists
Ganglion-blocking/nicotinic antagonists
Peripheral
Indirect
Monoamine oxidase inhibitors
VMAT inhibitors
Tyrosine hydroxylase inhibitors
Direct
α1-Adrenergic receptor blockers
Non-selective α-adrenergic receptor blockers
Otherantagonists
Serotonin receptor antagonists
Endothelin receptor antagonists (forPHTooltip Pulmonary hypertension)
α1
Agonists
Antagonists
α2
Agonists
Antagonists
β
Agonists
Antagonists
5-HT1
5-HT1A
5-HT1B
5-HT1D
5-HT1E
5-HT1F
5-HT2
5-HT2A
5-HT2B
5-HT2C
5-HT37
5-HT3
5-HT4
5-HT5A
5-HT6
5-HT7
Tryptamines
4-Hydroxytryptamines
andesters/ethers
5-Hydroxy- and
5-methoxytryptamines
N-Acetyltryptamines
α-Alkyltryptamines
α-Ketotryptamines
Cyclized tryptamines
Isotryptamines
Related compounds
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