Affiliation: | 1. Leiden Institute of Chemistry, Department of Bio‐Organic Synthesis, Gorlaeus Laboratories, Leiden University, PO Box 9502, 2300 RA Leiden (The Netherlands), Fax: (+31)?71‐5274307;2. Division of Medicinal Chemistry, LACDR, Leiden University, PO Box 9502, 2300 RA Leiden (The Netherlands);3. Department of Molecular Pharmacology, Schering‐Plough Research Institute, PO Box 20, 5340 BH Oss (The Netherlands);4. Department of Medicinal Chemistry, Schering‐Plough Research Institute, PO Box 20, 5340 BH Oss (The Netherlands) |