Polarographie der Alkaloide XVII. Beitrag zur Polarographie des Chinins und seiner Derivate

Organic Polarography

“…Polarographic data are also reported in this series for sinomenine (282), papaverine (25), Percain [2-butoxy-4-(2-diethylaminoethylcarbamoyl )quinoline hydrochloride ] (82), Atophane(2phenylquinoline-4-carboxylic acid) (83), cotarnine, hydrastinine, berberine (68), quinine, quininone, quinotoxin, quinotoxyl (10), quinoline-6-and quinoline-7-carboxylic acids and aldehydes (325), 8-quinolinol (oxine) (473), chelerythrine, and sanguinarine (12). Determinations are reported using the reduction of nitroso derivatives as a basis for cephaeline (133, 183) and -V-allylnormorphine (442).…”

Organic Polarography

“…The polarographic method has been used to show that quinoline and pyridine oxides are more stable to reduction than amine (318), and to prove that the reduction of quinine involves the quinoline ring (10).…”