1. DMPK and Bioanalytical Chemistry, AstraZeneca R&D, S-431 83 Mölndal, Sweden, Department of Organic Pharmaceutical Chemistry, Uppsala University, Post Office Box 574, S-751 23 Uppsala, Sweden, Lead Molecular Design, Valles 96-102, Loc 27, 08190 Sant Cugat de Valles, Barcelona, Spain, and Laboratory for Chemometrics, Universitá degli Studi di Perugia, Via Elce di Sotto, 12 I-06100 Perugia, Italy