专利号:US-2023303611-A1 优先权日:2022-01-21 标题:Synthesis of an antiviral azasugar triphosphate 发明人:KOTIAN PRAVIN L; Dang zhao; WU MINWAN 权利人:BIOCRYST PHARM INC 摘要:Provided are methods of making the active 5′-triphosphate form of galidesivir (compound 1) and the active 5′-triphosphate form of azasugar nucleoside analogues (compound 2):a potent anti-viral compound useful for broad spectrum treatment, suppression, and prevention of viral infections. The syntheses of compound 1 and compound 2 can be achieved via selective formation of protected intermediate 1b and protected intermediate 2b, respectively: