Characterization of thien-2-yl 1S,2R-milnacipran analogues as potent norepinephrine/serotonin transporter inhibitors for the treatment of neuropathic pain.

Article Details

Citation

Dyck B, Tamiya J, Jovic F, Pick RR, Bradbury MJ, O'Brien J, Wen J, Johns M, Madan A, Fleck BA, Foster AC, Li B, Zhang M, Tran JA, Vickers T, Grey J, Saunders J, Chen C

Characterization of thien-2-yl 1S,2R-milnacipran analogues as potent norepinephrine/serotonin transporter inhibitors for the treatment of neuropathic pain.

J Med Chem. 2008 Nov 27;51(22):7265-72. doi: 10.1021/jm8009537.

PubMed ID
18954038 [ View in PubMed
]
Abstract

Thien-2-yl 1S,2R-milnacipran analogues were synthesized and characterized as norepinephrine/serotonin transporter inhibitors. These compounds possessed higher potencies than 1S,2R-milnacipran (2R-1) while maintaining low molecular weight and moderate lipophilicity, which are the important features for the pharmacological and pharmacokinetic characteristics of milnacipran (1). Thus, compound 5c exhibited IC50 values of 2.3 and 32 nM, respectively, at NET and SERT, which were more than 10-fold better than those of 1 (NET IC50 = 77 nM, SERT IC50 = 420 nM). Moreover, 5c achieved the same efficacy as 1, but with much lower doses, in a rodent spinal nerve ligation pain model. In addition, 5c displayed desirable pharmacokinetic properties in several species, including high oral availability and significant brain penetration.

DrugBank Data that Cites this Article

Binding Properties
DrugTargetPropertyMeasurementpHTemperature (°C)
AtomoxetineSodium-dependent noradrenaline transporterIC 50 (nM)5.1N/AN/ADetails
AtomoxetineSodium-dependent serotonin transporterIC 50 (nM)190N/AN/ADetails
DuloxetineSodium-dependent dopamine transporterIC 50 (nM)660N/AN/ADetails
DuloxetineSodium-dependent noradrenaline transporterIC 50 (nM)8.9N/AN/ADetails
DuloxetineSodium-dependent serotonin transporterIC 50 (nM)6.6N/AN/ADetails