Four new hexahydroindolizine-type alkaloids have been isolated from the seeds of Ipomea alba: isoipomine [4], methoxy ipomine [5], dimethoxy ipomine [6], ipalbidinium [7) Three other known alkaloids were also isolated: ipalbidine {1], ipalbine [2], and ipomine [3}. © 1987, American Chemical Society. All rights reserved.