It’s only fair to share… Arbemnifosbuvir, AT-752, 1998705-63-7, PD160572 E9V7VHK36U INN 12706 C24H33FN7O7P 581.5 g/mol SYN propan-2-yl (2S)-2-[[[(2R,3R,4R,5R)-5-[2-amino-6-(methylamino)purin-9-yl]-4-fluoro-3-hydroxy-4-methyloxolan-2-yl]methoxy-phenoxyphosphoryl]amino]propanoate L-ALANINE, N-((P(R),2’R)-2-AMINO-2′-DEOXY-2′-FLUORO-N,2′-DIMETHYL-P-PHENYL-5′ -ADENYLYL)-, 1-METHYLETHYL ESTERN-((P(R),2’R)-2-AMINO-2′-DEOXY-2′-FLUORO-N,2′-DIMETHYL-P-PHENYL-5′ -ADENYLYL)-L-ALANINE 1-METHYLETHYL ESTER WO2022040473 Atea Pharmaceuticals, Inc. CN113784721 US20160257706 WO2022076903 US10874687 PATENT US20160257706 https://patentscope.wipo.int/search/en/detail.jsf?docId=US177601863&_cid=P11-M0VTE4-38538-1 Example 1. Preparation of isopropyl ((((R,S)-(2R,3R,4R,5R)-5-(2-amino-6-(methylamino)-9H-purin-9-yl)-4-fluoro-3-hydroxy-4-methyltetrahydrofuran-2-yl)methoxy)-phenoxy-phosphoryl)-L-alaninate Step 1. Preparation of ((2R,3R,4R,5R)-3-(benzoyloxy)-5-bromo-4-fluoro-4-methyltetrahydrofuran-2-yl)methyl benzoate (2) To a solution of (2R)-3,5-di-O-benzoyl-2-fluoro-2-C-methyl-D-ribono-γ-lactone (24.8 …