1. MediChem Research, Inc., 12305 South
New Avenue, Lemont, Illinois 60439, Program for Collaborative Research
in the
Pharmaceutical Sciences, Department of Medicinal Chemistry and Pharmacognosy,
University of Illinois at Chicago,
833 South Wood Street, Chicago, Illinois 60612, and ABL-Basic Research
Program, NCI-Frederick Cancer Research and
Development Center, Frederick, Maryland 21702