PMC:7291971 / 40471-41123 JSONTXT 7 Projects

Annnotations TAB TSV DIC JSON TextAE

Id Subject Object Predicate Lexical cue
T298 0-74 Sentence denotes 4.1.7 General method C for the synthesis of compounds 1, 3, 5–7, 9, 10-16
T299 75-163 Sentence denotes The synthesis intermediate was treated at room temperature with TFA in water (8/2, conc.
T300 164-172 Sentence denotes 0.14 M).
T301 173-331 Sentence denotes After stirring for 3–6 h until completion of reaction (TLC DCM/MeOH), solvents were removed and the residue was coevaporated three times with 7 M NH3 in MeOH.
T302 332-510 Sentence denotes The residue was purified by flash column chromatography on a reversed-phase silica gel column C18 (4 g, 40 μm) with a linear gradient of acetonitrile in TEAAc buffer 50 mM, pH 7.
T303 511-652 Sentence denotes The fractions containing the pure compound were pooled, concentrated and lyophilized with water/dioxane to give desired compound as a powder.