Studies on a series of milnacipran analogs containing a heteroaromatic group as potent norepinephrine and serotonin transporter inhibitors

A series of milnacipran analogs containing a heteroaromatic group were synthesized and studied as monoamine transporter inhibitors. Many compounds exhibited higher potency than milnacipran at NET and NET/SERT with no significant change in lipophilicity. For example, compound R-26f was about 10-fold more potent than milnacipran with IC50 values of 8.7 and 26 nM at NET and SERT, respectively.

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