Kamyar
Afarinkia*a, Andrew
Fallerb, Andrew J.
Twista a Department of Chemistry, King’s College, Strand, London
WC2R 2LS, UK Fax: +44(20)78482810; e-Mail: kamyar.afarinkia@kcl.ac.uk; b GlaxoSmithKline, New Frontiers
Science Park (North), Harlow, Essex CM19 5AW, UK