As has been well indicated in a monograph on the subject, a considerable portion of recent research on antimalarials has centered about 4-aminoquinolint: derivatives, chloroquine3 (7- chloro-4-(4-diethylamino-1-methylbutylamino)-quinoline4-" being the most important member of the series. The work described here was planned to determine certain aspects of the influence of structure upon activity in new 4-aminoquinoline types. Most of the ...