R-licarbazepine

R-licarbazepine is the R-enantiomer of licarbazepine, a monohydroxy derivative of oxcarbazepine. It is a metabolite formed during the metabolism of oxcarbazepine and eslicarbazepine acetate. While eslicarbazepine (the S-enantiomer) is pharmacologically active as an anticonvulsant and used in clinical practice for epilepsy, R-licarbazepine itself has not demonstrated significant anticonvulsant activity in preclinical studies. In animal models, administration of R-licarbazepine did not protect against maximal electroshock-induced seizures, suggesting it does not contribute meaningfully to antiepileptic effects[2]. The compound undergoes further oxidation to inactive metabolites more readily than its S-enantiomer[2]. Mechanistically, while related compounds act primarily by inhibiting voltage-gated sodium channels and possibly T-type calcium channels, there is no evidence that R-licarbazepine itself exerts these effects at clinically relevant levels[5][2].

Other names

Licarbazepine, (R)-104746-03-4UNII-UQY83V0QWAUNII-UQY-83V0QWAUNII-UQY 83V0QWA