Affiliation: | 1. University of Vienna, Institute of Organic Chemistry, W?hringerstrasse 38, 1090 Vienna (Austria), Fax: (+43)?1‐4277‐52189, Homepage: http://www.univie.ac.at/rg_mulzer/;2. ETH Zürich, Institut f. Pharmazeut. Wissenschaften, HCI H 405, Wolfgang‐Pauli‐Strasse 10, 8093 Zürich (Switzerland) |