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]
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| Other names | LY53857; LY-53,857; 6-Methyl-1-(1-methylethyl)ergoline-8β-carboxylic acid 2-hydroxy-1-methylpropyl ester |
| Drug class | Serotonin 5-HT2 receptor antagonist; Serotonin 5-HT2A receptor antagonist; Serotonin 5-HT2B receptor antagonist; Serotonin 5-HT2C receptor antagonist; Serotonin 5-HT7 receptor antagonist |
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| Formula | C23H32N2O3 |
| Molar mass | 384.520 g·mol−1 |
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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
- Substituted ergoline
- LY-86057
- Amesergide (LY-237733)
- LY-215840
- Sergolexole (LY-281067)
- LA-3Cl-SB