tert-butyl (2S)-2-aminopentanoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Compound 41 (263 mg, 1.55 mmol) and H-Nva-OtBu (420 mg, 2.42 mmol) were dissolved in dry THF (20 mL). DIEA (530 uL, 3.04 mmol) and 2-hydroxypyridine (260 mg, 2.73 mmol) were added and the mixture was refluxed for five days. The solvent was evaporated and the crude product was purified by flash column chromatography (toluene/EtOAc 1:2) to give 42 (510 mg, 96%). the mixture was refluxed for five days The solvent was evaporated the crude product was purified by flash column chromatography (toluene/EtOAc 1:2)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Compound 41 (263 mg, 1.55 mmol) and H-Nva-OtBu (420 mg, 2.42 mmol) were dissolved in dry THF (20 mL). DIEA (530 uL, 3.04 mmol) and 2-hydroxypyridine (260 mg, 2.73 mmol) were added and the mixture was refluxed for five days. The solvent was evaporated and the crude product was purified by flash column chromatography (toluene/EtOAc 1:2) to give 42 (510 mg, 96%). the mixture was refluxed for five days The solvent was evaporated the crude product was purified by flash column chromatography (toluene/EtOAc 1:2)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Compound 41 (263 mg, 1.55 mmol) and H-Nva-OtBu (420 mg, 2.42 mmol) were dissolved in dry THF (20 mL). DIEA (530 uL, 3.04 mmol) and 2-hydroxypyridine (260 mg, 2.73 mmol) were added and the mixture was refluxed for five days. The solvent was evaporated and the crude product was purified by flash column chromatography (toluene/EtOAc 1:2) to give 42 (510 mg, 96%). the mixture was refluxed for five days The solvent was evaporated the crude product was purified by flash column chromatography (toluene/EtOAc 1:2)