3,5-DICHLORO-4-PYRIDINECARBONITRILE AS A KEY REAGENT IN A SYNTHESIS OF COPPER-CONTAINING AMINE OXIDASE-INHIBITORS

Various synthetic approaches to 3,4,5-trifunctionalized pyridine derivatives useful as benzylamine oxidase inhibitors are extensively explored. Fully satisfactory preparations of the inhibitors 3,5-diethoxy-4-aminomethylpyridine (4), 3,5-bis(3-hydroxypropoxy)-4-aminomethylpyridine (11), 3,5-bis(4-hydroxybutoxy)-4- aminomethylpyridine (12) and 3-ethoxy-5-phenylmethoxy-4-aminomethylpyridine (16), all in the form of dihydrochloride salt, using 3,5-dichloro-4-pyridinecarbonitrile as key precursor, are reported.