1. Pharmaceutical DivisionSmall Molecules Technical DevelopmentDepartment of Process Chemistry and CatalysisF. Hoffmann-La Roche Ltd 4070 Basel Switzerland
2. Department of Small Molecule Process ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
3. Department of ChemistryUniversity of Basel 4056 Basel Switzerland
4. Roger Adams LaboratoryDepartment of ChemistryUniversity of Illinois Urbana IL 61801 USA