53363-89-6

基本信息
BOC-BETA-TBU-ALANINE
BOC-BETA-TBU-ALA-OH
BOC-BETA-T-BUTYL-L-ALANINE
BOC-L-BETA-T-BUTYLALANINE
BOC-LEU(ME)-OH
BOC-L-MELEU-OH
BOC-L-NEOPENTYLGLYCINE
BOC-MELEU-OH
BOC-N-ALPHA-METHYL-L-LEUCINE
BOC-NEOPENTYLGLYCINE
BOC-(NEOPENTYL)GLY-OH
BOC-N-ME-LEUCINE
BOC-N-ME-LEU-OH
BOC-N-METHYL-L-LEUCINE
BOC-N-METHYL-L-LEU-OH
BOC-T-BUTYL-L-ALANINE
N-ALPHA-T-BOC-N-ALPHA-METHYL-L-LEUCINE
N-ALPHA-T-BUTOXYCARBONYL-BETA-T-BUTYL-L-ALANINE
N-ALPHA-T-BUTOXYCARBONYL-GAMMA-METHYL-L-LEUCINE
物理化学性质
制备方法

13139-15-6

74-88-4

53363-89-6
在0℃下,向Boc-L-亮氨酸(5.0g,21.6mmol)的四氢呋喃(THF,73mL)溶液中加入氢化钠(NaH,60%在矿物油中的分散体,10.0g,0.13mol)。在0℃下搅拌30分钟后,依次加入碘甲烷(MeI,4.1mL,66.0mmol)和N,N-二甲基甲酰胺(DMF,3.7mL)。将反应混合物在0℃下继续搅拌30分钟,随后在室温下搅拌4小时。反应完成后,用去离子水(50mL)淬灭反应。将混合物用乙酸乙酯(EtOAc,2×100mL)萃取。水相用10%硫酸氢钾(KHSO4)水溶液酸化至pH 5,再次用乙酸乙酯萃取。合并所有乙酸乙酯萃取液,依次用5%连二亚硫酸钠(Na2S2O4)溶液和饱和食盐水洗涤,无水硫酸钠(Na2SO4)干燥,过滤后减压浓缩,得到Boc-N-甲基-L-亮氨酸(5.2g,98%收率),为无色油状物。
参考文献:
[1] Tetrahedron Letters, 2014, vol. 55, # 44, p. 6109 - 6112
[2] Helvetica Chimica Acta, 1994, vol. 77, # 4, p. 1124 - 1165
[3] Medicinal Chemistry Research, 2016, vol. 25, # 6, p. 1148 - 1162
[4] Patent: WO2014/174060, 2014, A1. Location in patent: Page/Page column 112
[5] International Journal of Molecular Sciences, 2017, vol. 18, # 3,