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LY-344545

Identifiers
IUPAC name (αS)-α-Amino-α--9H-xanthene-9-propanoic acid
CAS Number	201851-20-9
PubChem CID	10618042
ChemSpider	8793407
UNII	9ZSQ1C4209
Chemical and physical data
Formula	C20H19NO5
Molar mass	353.374 g·mol
3D model (JSmol)	Interactive image
SMILES c1ccc2c(c1)C(c3ccccc3O2)C(4C4C(=O)O)(C(=O)O)N
InChI InChI=1S/C20H19NO5/c21-20(19(24)25,15-9-13(15)18(22)23)10-14-11-5-1-3-7-16(11)26-17-8-4-2-6-12(14)17/h1-8,13-15H,9-10,21H2,(H,22,23)(H,24,25)/t13-,15-,20+/m1/s1 Key:VLZBRVJVCCNPRJ-RCDCFZSISA-N
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LY-344,545 is a research drug developed by the pharmaceutical company Eli Lilly, which acts as an antagonist for the metabotropic glutamate receptor subtype mGluR₅. It is an epimer of another metabotropic glutamate receptor antagonist, the mGluR_2/3-selective LY-341,495.

References

1. Ornstein PL, Bleisch TJ, Arnold MB, Kennedy JH, Wright RA, Johnson BG, et al. (January 1998). "2-substituted (2SR)-2-amino-2-((1SR,2SR)-2-carboxycycloprop-1-yl)glycines as potent and selective antagonists of group II metabotropic glutamate receptors. 2. Effects of aromatic substitution, pharmacological characterization, and bioavailability". Journal of Medicinal Chemistry. 41 (3): 358–78. doi:10.1021/jm970498o. PMID 9464367.
2. Doherty AJ, Palmer MJ, Bortolotto ZA, Hargreaves A, Kingston AE, Ornstein PL, et al. (September 2000). "A novel, competitive mGlu(5) receptor antagonist (LY344545) blocks DHPG-induced potentiation of NMDA responses but not the induction of LTP in rat hippocampal slices". British Journal of Pharmacology. 131 (2): 239–44. doi:10.1038/sj.bjp.0703574. PMC 1572327. PMID 10991916.

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