title: Redox derivatives of tranylcypromine: syntheses, properties, and monoamine oxidase inhibitor activity of some chemical delivery systems.
abstract: Several brain-targeting chemical delivery systems (CDS) based on a dihydropyridine----pyridinium salt type redox system were synthesized for the monoamine oxidase (MAO) inhibitor tranylcypromine (TCP). The dihydronicotinate moiety was chemically attached to the amino group of TCP by either an amide or substituted carbamate linkages. Physicochemical studies of the new derivatives, including chromatographic Rm determinations, were performed. Only the substituted carbamate-type derivatives manifested an increased lipophilicity relative to the parent compound. In vitro oxidation stability studies were also performed on selected derivatives using a ferricyanide-mediated method. Results of this assay showed that the dihydropyridine-type derivatives oxidized to the respective quaternary salt forms with stabilities which empirically correlated with other effective CDSs. Preliminary in vivo studies performed in rats indicated that some of the new derivatives exerted significant biological activity.
authors.affiliation: Center for Drug Design and Delivery, College of Pharmacy, University of Florida, J. Hillis Miller Health Center, Gainesville 32610.
authors.forename: K
authors.initials: K
authors.lastname: Prókai-Tátrai
authors.forename: E
authors.initials: E
authors.lastname: Pop
authors.forename: W
authors.initials: W
authors.lastname: Anderson
authors.forename: J L
authors.initials: JL
authors.lastname: Lin
authors.forename: M E
authors.initials: ME
authors.lastname: Brewster
authors.forename: N
authors.initials: N
authors.lastname: Bodor
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002855:Chromatography, Thin Layer; D004563:Electrochemistry; D005292:Ferricyanides; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D013058:Mass Spectrometry; D008996:Monoamine Oxidase Inhibitors / Q000008:administration & dosage / Q000138:chemical synthesis* / Q000633:toxicity; D010084:Oxidation-Reduction; D051381:Rats; D011919:Rats, Inbred Strains; D013056:Spectrophotometry, Ultraviolet; D014191:Tranylcypromine / Q000031:analogs & derivatives* / Q000737:chemistry / Q000633:toxicity
chemical_list: D005292:Ferricyanides; D008996:Monoamine Oxidase Inhibitors; C007931:hexacyanoferrate III; D014191:Tranylcypromine