... Gershon* [a,b], Anthony Grefig [a], and Donald D. Clarke [b] [a] Boyce Thompson Institute for Plant Research at Cornell University, Ithaca, New York 14853 [b] Department of Chemistry, Fordham University, Bronx ... [5] H. Gershon, AT Grefig and AA Scala, J. Heterocyclic Chem., 20 ...