Tamiflu (oseltamivir phosphate), clinically working antiviral chiral drug, is most effective against the infectious disease caused by both influenza A and B. It is also the last resort drug for the treatment of N1H1 virus infection at a high cost with minimal global availability. The current industrial method uses natural (‐)‐shikimic acid obtained from Chinese star anise and coffee beans, hence the limited natural resource and scarcity restricted the Tamiflu production. While most of the synthetic methods reported were composed of natural chiral pools and relatively low‐cost reagents, however, the industrial process is fundamentally limited to the use of hazardous azide or tedious purification methods. In case of an influenza outbreak, producing the Tamiflu according to its demand may be difficult. This document detailed the synthetic progress of chemistry over the last two decades emphasizing the starting materials, hazards of reagents, time needed, number of steps, and overall yields etc. for the interest in academia as well as industrial research.
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