It’s only fair to share… Atilotrelvir, BDBM622370, GST-HG171 2850365-55-6, ALIGOS THERAPEUTICS, INC 511.5 C24H32F3N5O4 (1S,3S,4R)-N-[(1S)-1-cyano-2-[(3S)-2-oxopyrrolidin-3-yl]ethyl]-2-[(2S)-3,3-dimethyl-2-[(2,2,2-trifluoroacetyl)amino]butanoyl]spiro[2-azabicyclo[2.2.1]heptane-5,1′-cyclopropane]-3-carboxamide Spiro[2-azabicyclo[2.2.1]heptane-5,1′-cyclopropane]-3-carboxamide, N-[(1S)-1-cyano-2-[(3S)-2-oxo-3-pyrrolidinyl]ethyl]-2-[(2S)-3,3-dimethyl-1-oxo-2-[(2,2,2-trifluoroacetyl)amino]butyl]-, (1S,3S,4R)- Atilotrelvir (GST-HG171) is antiviral agent, can inhibit coronavirus, picornavirus and norovirus infection. SCHEME SYNTHESIS Patents are available for this chemical structure: https://patentscope.wipo.int/search/en/result.jsf?inchikey=GTRJFXDJASEGSW-KBCNZALWSA-N PATENT US20230312571, Embodiment 11 PATENT WO2023043816 EX 50 [0312] To a stirred mixture of (1R,4S,6S)-5-(tert-butoxycarbonyl)-5-azaspiro[bicyclo[2.2.1]heptane-2,1′-cyclopropane]-6-carboxylic acid (120 mg, 0.449 …