Kilogram Scale Synthesis of the Pyrazinone Acetic Acid Core of an Orally Efficacious Thrombin Inhibitor
作者:Fred J. Fleitz、Terry A. Lyle、Nan Zheng、Joseph D. Armstrong、R. P. Volante
DOI:10.1080/00397910008086927
日期:2000.9
A multi-kilogram scale synthesis of the orally efficacious thrombin inhibitor 1 has been achieved via construction of the pyrazinone core from an unsymmetric oxalic diamide. Key features include judicious choice of reagents to minimize side products, a key ruthenium catalyzed oxidation, and development of reaction conditions amenable to large-scale synthesis.