PMC:7571312 / 62662-62791 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T518","span":{"begin":25,"end":30},"obj":"Chemical"},{"id":"T519","span":{"begin":39,"end":55},"obj":"Chemical"},{"id":"T90266","span":{"begin":41,"end":55},"obj":"Chemical"}],"attributes":[{"id":"A68195","pred":"chebi_id","subj":"T518","obj":"http://purl.obolibrary.org/obo/CHEBI_41264"},{"id":"A27534","pred":"chebi_id","subj":"T519","obj":"http://purl.obolibrary.org/obo/CHEBI_27839"},{"id":"A32001","pred":"chebi_id","subj":"T90266","obj":"http://purl.obolibrary.org/obo/CHEBI_24070"}],"text":"3S)-2-oxopyrrolidin-3-yl]butyl 4-Cyano-2-fluorobenzoate (25)\nFollowing the procedure described for the preparation of (3S)-3-({N-"}