Development of an Early-Phase Bulk Enabling Route to Sodium-Dependent Glucose Cotransporter 2 Inhibitor Ertugliflozin
                                
                                    
                                        作者:David Bernhardson、Thomas A. Brandt、Catherine A. Hulford、Richard S. Lehner、Brian R. Preston、Kristin Price、John F. Sagal、Michael J. St. Pierre、Peter H. Thompson、Benjamin Thuma                                    
                                    
                                        DOI:10.1021/op400289z
                                    
                                    
                                        日期:2014.1.17
                                    
                                    The development and optimization of a scalable synthesis of sodium-dependent glucose cotransporter 2 inhibitor, ertugliflozin, for the treatment of type-2 diabetes is described. Highlights of the chemistry are a concise, four-step synthesis of a structurally complex API from known intermediate 4 via persilylation-selective monodesilylation, primary alcohol oxidation, aldol-crossed-Cannizzaro reaction, and solid-phase acid-catalyzed bicyclic ketal formation. The final API was isolated as the L-pyroglutamic acid cocrystal.