LitCovid-sentences  

PMC:7291971 / 34286-35429 JSONTXT 7 Projects

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Id Subject Object Predicate Lexical cue
T247 0-114 Sentence denotes All dry solvents and reagents were purchased from commercial suppliers and were used without further purification.
T248 115-155 Sentence denotes DIEA was distilled over calcium hydride.
T249 156-238 Sentence denotes Thin-layer chromatography (TLC) analyses were carried out on silica plate 60 F254.
T250 239-358 Sentence denotes Purifications by column chromatography were performed using Biotage Isolera 1 system with FlashPure cartridges (Buchi).
T251 359-442 Sentence denotes NMR experiments were recorded on Bruker 400, 500 or 600 MHz spectrometers at 20 °C.
T252 443-557 Sentence denotes HRMS analyses were obtained with electrospray ionization (ESI) in positive mode on a Q-TOF Micromass spectrometer.
T253 558-746 Sentence denotes Analytical HPLC was performed on a UHPLC Thermoscientific Ultimate 3000 system equipped with a LPG-3400RS pump, a DAD 3000 detector and an WPS-3000TBRS Autosampler, Column Oven TCC-3000SD.
T254 747-865 Sentence denotes Dinucleosides 1–16 were analyzed by RP-HPLC on a Column Nucleodur C18 ec 100-3, 4.6 × 75 mm (Macherey Nagel) at 30 °C.
T255 866-911 Sentence denotes The following HPLC solvent systems were used:
T256 912-988 Sentence denotes 1% CH3CN in 12.5 mM TEAAc (buffer A), 80% CH3CN in 12.5 mM TEEAc (buffer B).
T257 989-1012 Sentence denotes Flow rate was 1 mL/min.
T258 1013-1050 Sentence denotes UV detection was performed at 260 nm.
T259 1051-1143 Sentence denotes Lyophilized compounds 1–16 were stored at −20 °C for several months without any degradation.