PMC:7571312 / 820-993 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T6","span":{"begin":26,"end":32},"obj":"Chemical"},{"id":"T7","span":{"begin":157,"end":159},"obj":"Chemical"}],"attributes":[{"id":"A6","pred":"chebi_id","subj":"T6","obj":"http://purl.obolibrary.org/obo/CHEBI_52214"},{"id":"A7","pred":"chebi_id","subj":"T7","obj":"http://purl.obolibrary.org/obo/CHEBI_74795"},{"id":"A8","pred":"chebi_id","subj":"T7","obj":"http://purl.obolibrary.org/obo/CHEBI_90284"}],"text":"RS CoV-1 3CLpro employing ligand-protease structures solved by X-ray crystallography led to the identification of 3 and 4. Preclinical experiments reveal 4 (PF-00835231) as "}