Protection of 4-(4-fluorobenzoyl)piperidine (I) as the tert-butyl carbamate (II), followed by displacement of the fluorine atom with isopropylthiol affords the isopropylsulfanyl derivative (III). Subsequent addition of methyllithium to ketone (III) produces the tertiary alcohol (IV). Dehydration of alcohol (IV) with concomitant N-Boc group cleavage under acidic conditions gives rise to the benzylidene piperidine (V), which is further subjected to reductive alkylation with N-Boc-4-piperidone (VI) in the presence of NaBH(OAc)3 to yield the bipiperidine derivative (VII). Controlled oxidation of the sulfide group of (VII) employing NaBO3/AcOH provides sulfoxide (VIII). After N-Boc group cleavage in (VIII) by means of trifluoroacetic acid, the resultant amine (IX) is coupled to 3 methylanthranilic acid (X) to furnish the target amide.