Affiliation: | aMedicinal Chemistry, Lexicon Pharmaceuticals, 350 Carter Road, Princeton, NJ 08540, USA bWyeth Research, 401 N. Middletown Rd., Pearl River, NY 10965, USA cRhodia Chirex, 56 Roland Street, Boston, MA 02129, USA dDepartment of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, CA 92037, USA |