[1] Boston Univ, Dept Chem, Boston, MA 02215 USA
[2] Boston Univ, Ctr Streamlined Synth, Metcalf Ctr Sci & Engn, Boston, MA 02215 USA
[3] Montana State Univ, Dept Plant Sci, Bozeman, MT 59717 USA
[4] Cornell Univ, Baker Lab, Dept Chem, Ithaca, NY 14853 USA
[5] Cytoclonal Pharmaceut Inc, Dallas, TX 75235 USA