LY-53857

Pharmaceutical compound From Wikipedia, the free encyclopedia

LY-53857 is a serotonin 5-HT2 receptor antagonist of the ergoline family which has been widely used in scientific research.[1][2][3][4]

Other namesLY53857; LY-53,857; 6-Methyl-1-(1-methylethyl)ergoline-8β-carboxylic acid 2-hydroxy-1-methylpropyl ester
ATC code
  • None
Quick facts Clinical data, Other names ...
LY-53857
Clinical data
Other namesLY53857; LY-53,857; 6-Methyl-1-(1-methylethyl)ergoline-8β-carboxylic acid 2-hydroxy-1-methylpropyl ester
Drug classSerotonin 5-HT2 receptor antagonist; Serotonin 5-HT2A receptor antagonist; Serotonin 5-HT2B receptor antagonist; Serotonin 5-HT2C receptor antagonist; Serotonin 5-HT7 receptor antagonist
ATC code
  • None
Identifiers
  • 3-hydroxybutan-2-yl (6aR,9R,10aR)-7-methyl-4-propan-2-yl-6,6a,8,9,10,10a-hexahydroindolo[4,3-fg]quinoline-9-carboxylate
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
Chemical and physical data
FormulaC23H32N2O3
Molar mass384.520 g·mol−1
3D model (JSmol)
  • CC(C)N1C=C2C[C@@H]3[C@H](C[C@H](CN3C)C(=O)OC(C)C(C)O)C4=C2C1=CC=C4
  • InChI=1S/C23H32N2O3/c1-13(2)25-12-16-10-21-19(18-7-6-8-20(25)22(16)18)9-17(11-24(21)5)23(27)28-15(4)14(3)26/h6-8,12-15,17,19,21,26H,9-11H2,1-5H3/t14?,15?,17-,19-,21-/m1/s1
  • Key:JQYLIGHHVGCTPR-LYRPIDSHSA-N
Close

It is a potent antagonist of the serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptors (Ki = 7.2–50 nM, 6.3–6.9 nM, and 7.9–8.3 nM, respectively).[1][5][6][7][8][9] The drug shows strong selectivity for the serotonin 5-HT2 receptors over the serotonin 5-HT1 and α-adrenergic receptors.[10] Although originally thought to be selective for the serotonin 5-HT2 receptors,[1] LY-53857 was subsequently found to also show significant affinity for the serotonin 5-HT7 receptor (Ki = 100 nM), where it is likewise an antagonist.[11][12] In addition, it shows high affinity for the serotonin 5-HT1F receptor (Ki = 6.87 nM).[13]

It produces antidepressant-like and anxiolytic-like effects in rodents.[3][14][15][16][17][18] The drug has no effect on locomotor activity by itself, but blocks the hyperlocomotion induced by phencyclidine (PCP).[19] In addition, whereas meta-chlorophenylpiperazine (mCPP) produces hypolocomotion by itself, the combination of mCPP with LY-53857 results in mCPP producing hyperlocomotion instead.[20][21] LY-53857 blocks the discriminative stimulus of the psychedelic drugs LSD, mescaline, and DOM in rodent drug discrimination studies.[9][22][23][24] The drug inhibits the hyperthermia induced by the psychedelic drug DOI, by mCPP, and by the serotonin releasing agent para-chloroamphetamine (PCA).[25][26][27]

Analogues of LY-53857 have also been described and include LY-86057 (the N1-desisopropyl analogue), LY-108742 (the N1-methyl analogue), and LY-197541 (the N1-isobutyl analogue).[28][4][29]

LY-53857 was first described in the scientific literature by 1979.[30]

See also

References

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