methylnaltrexone   Click here for help

GtoPdb Ligand ID: 7563

Abbreviated name: MNTX
Synonyms: MRZ-2663BR | Relistor®
Approved drug
methylnaltrexone is an approved drug (EMA & FDA (2008))
Compound class: Synthetic organic
Comment: The charged tetravalent nitrogen atom in this molecule reduces its ability to cross the blood-brain barrier, thereby restricting its activity to peripheral targets. This type of peripherally acting mu-opioid receptor antagonist is known by the acronym PAMORA.
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2D Structure
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Physico-chemical Properties
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Hydrogen bond acceptors 2
Hydrogen bond donors 2
Rotatable bonds 2
Topological polar surface area 66.76
Molecular weight 356.19
XLogP 0.24
No. Lipinski's rules broken 0
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Canonical SMILES O=C1CCC2(C34C1Oc1c4c(CC2[N+](CC3)(C)CC2CC2)ccc1O)O
Isomeric SMILES O=C1CC[C@@]2([C@@]34[C@H]1Oc1c4c(C[C@H]2[N+](CC3)(C)CC2CC2)ccc1O)O
InChI InChI=1S/C21H25NO4/c1-22(11-12-2-3-12)9-8-20-17-13-4-5-14(23)18(17)26-19(20)15(24)6-7-21(20,25)16(22)10-13/h4-5,12,16,19,25H,2-3,6-11H2,1H3/p+1/t16-,19+,20+,21-,22?/m1/s1
1. Li Z, Pergolizzi JV, Huttner RP, Zampogna G, Breve F, Raffa RB. (2015)
Management of opioid-induced constipation in pregnancy: a concise review with emphasis on the PAMORAs.
J Clin Pharm Ther, 40 (6): 615-9. [PMID:26573866]
2. Wentland MP, Lou R, Lu Q, Bu Y, Denhardt C, Jin J, Ganorkar R, VanAlstine MA, Guo C, Cohen DJ et al.. (2009)
Syntheses of novel high affinity ligands for opioid receptors.
Bioorg Med Chem Lett, 19 (8): 2289-94. [PMID:19282177]