1. Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, DK‐2100, Copenhagen, Denmark
2. Current addresses: S. Gangwar, Prolinx, Inc., Bothell, WA, USA; O. Gudmundsson, Bristol‐Myers Squibb, New Brunswick, NJ, USA
3. Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS 66047, USA