反应详情

Methyl 6-bromomethyl-3-nitrobenzoate (430 mg, 1.64 mmol), N-glycyl-3(R)-methyl-β-alanine benzyl ester hydrochloride 2-4 (611 mg, 2.13 mmol) and triethylamine (0.68 mL, 4.92 mmol) were stirred in acetonitrile (10 mL) for 16 hours. The solution was poured into 1N HCl and extracted with EtOAc (3×), washed with brine, dried (MgSO4) and evaporated. Purification by column chromatography eluting with EtOAc afforded 2-6 as a solid. Rf (silica; EtOAc)=0.45. ##STR60## N-{[6-Amino-2,3-dihydro-1(1H)-isoindolone-2-yl]acetyl}-3(R)-methyl-β-alanine (2-7)

1. extractionextracted with EtOAc (3×)
2. washwashed with brine
3. dry with materialdried (MgSO4)
4. customevaporated
5. customPurification by column chromatography
6. washeluting with EtOAc