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PubChem CID
Chemical and physical data
Formula C18H21NO2
Molar mass 283.364 g/mol
3D model (JSmol)

N,O-Dimethyl-4β-(2-naphthyl)piperidine-3β-carboxylate (DMNPC) is a piperidine based stimulant drug which is synthesised from arecoline. It is similar to nocaine in chemical structure, and has two and a half times more activity than cocaine as a dopamine reuptake inhibitor. However it is also a potent serotonin reuptake inhibitor, with similar affinity to fluoxetine.[1] It is a structural isomer of another potent dopamine reuptake inhibitor, HDMP-28.


Ki Affinity of Piperidine Based MAT Inhibitors
∗∗ X N 5HT DA NE
SS p-Vinyl Me 138 131 175
p-Ethyl 255 >1.7K >1.1K
p-Allyl 309 964 >1K
p-Ethynyl 175 187 364
p-Phenyl 62 173 203
β-Naphthyl 7.6 21 34
3R,4S 42 947 241
RR 192 87 27
3S,4R 12 271 38
H2Cl 3.5 90 30
SS/RR α-Naphthyl Me 101 304 281

Clearly it is not just the SS enantiomer of the title compound that is an active MAT inhibitor.

Effect of N-demethylation[edit]

For the SR enantiomer, increased DAT affinity is seen upon demethylation.

This is the same choice of isomer used in the production of Paxil.

See also[edit]