title: Improved delivery through biological membranes. 1. Synthesis and properties of 1-methyl-1,6-dihydropyridine-2-carbaldoxime, a pro-drug of N-methylpyridinium-2-carbaldoxime chloride.
abstract: A dihydropyridine-pyridine type redox pro-drug system was developed for delivering quaternary pyridinium salts through biological membranes. As a first application, the dihydropyridine derivative of N-methylpyridinium-2-carbaldoxime chloride (2-PAM) was synthesized using a reduction-addition-elimination sequence. The dihydro-2-PAM obtained has all the required properties for an effective transport through lipoidal barriers and it reverts easily back to 2-PAM as a result of a chemical or enzymatic oxidation process.
mesh_terms: D001692:Biological Transport; D008566:Membranes / Q000378:metabolism*; D010084:Oxidation-Reduction; D011220:Pralidoxime Compounds / Q000138:chemical synthesis* / Q000378:metabolism; D013056:Spectrophotometry, Ultraviolet
chemical_list: D011220:Pralidoxime Compounds; C011920:1-methyl-1,6-dihydropyridine-2-carbaldoxime