Semisynthetic derivatives were prepared from two natural annonaceous acetog
enins, rolliniastatin-1 and squamocin, and their cytotoxicity was evaluated
. Amino derivatives show decreased bioactivity. Isorolliniastatin-1 was fou
nd to be much less toxic than rolliniastatin-1 after intraperitoneal admini
stration to mice, although the in vitro cytotoxicity of both compounds was
comparable (C) 1999 Elsevier Science Ltd. All rights reserved.