Synfacts, Table of Contents Synfacts 2022; 18(11): 1251DOI: 10.1055/s-0041-1738630 Innovative Drug Discovery and Development Synthesis and Reevaluation of (+)- and (−)-Collybolide as kappa-Opioid Receptor Agonists Authors Contributor(s): Dirk Trauner Zisis Peitsinis Recommend Article Abstract Buy Article(opens in new window)Key words Key words kappa-opioid receptors - Wittig olefination - Hayashi–Jørgensen catalyst Full Text