A new approach to 1-deoxy-azasugars: asymmetric synthesis of 1-deoxymannojirimycin and 1-deoxyaltronojirimycin
作者:Yi-Ming Xu、Wei-Shan Zhou
DOI:10.1039/a605128f
日期:——
A concise and flexible method, based upon the kinetic
resolution of racemic α-furfuryl amine derivatives, for the
asymmetric synthesis of 1-deoxy-azasugars is described.
(-)-1-Deoxymannojirimycin 1a has been synthesized in nine
steps (5.8% overall yield) from the α-furfurylamine
derivative 3 and its enantiomer (+)-1-deoxymannojirimycin 1b has
been similarly synthesized in nine steps (3.7% overall yield)
from (S)-3. (-)- and (+)-1-Deoxyaltronojirimycin,
16a and 16b, have also been synthesized in five steps (overall
yields 21.5% and 25.4%, respectively) from the intermediates 9a
and 9b, respectively.
描述了一种基于消旋α-呋喃基胺衍生物的动力学分辨法的简洁灵活的方法,用于不对称合成1-脱氧-氮糖。(-)-1-脱氧甘露糖霉素1a已从α-呋喃基胺衍生物3经过九步合成,整体产率为5.8%;其对映体(+)-1-脱氧甘露糖霉素1b也同样从(S)-3经过九步合成,整体产率为3.7%。(-)-和(+)-1-脱氧阿尔托糖霉素16a和16b也分别从中间体9a和9b经过五步合成,整体产率分别为21.5%和25.4%。