α-fructofuranosides were stereospecifically synthesized from 2-O-Ac-1,3,4,6-O-tetra-benzoylfructose by employing TMSOTf as a catalyst. Meanwhile,one diastereoisomer derivative of sucrose and two of fructan oligomers ...α-fructofuranosides were stereospecifically synthesized from 2-O-Ac-1,3,4,6-O-tetra-benzoylfructose by employing TMSOTf as a catalyst. Meanwhile,one diastereoisomer derivative of sucrose and two of fructan oligomers were synthesized.The structure of all products were confirmed by ^(13)C-NMR and ~1H-NMR spectra.展开更多
: Benzoylated phenyl α - and β - 2-thio-D-fructofuranosides were synthesthed and firstly used as donors in coupling with sucrose acceptor. a-Fructohanoside was stereospecifically synthesized by employing NIS(N - iod...: Benzoylated phenyl α - and β - 2-thio-D-fructofuranosides were synthesthed and firstly used as donors in coupling with sucrose acceptor. a-Fructohanoside was stereospecifically synthesized by employing NIS(N - iodosuccinimide)/AgOTf as catalysts. The structure of all products was confirmed by 13C-NMR or 1H-NMR spectrum展开更多
文摘α-fructofuranosides were stereospecifically synthesized from 2-O-Ac-1,3,4,6-O-tetra-benzoylfructose by employing TMSOTf as a catalyst. Meanwhile,one diastereoisomer derivative of sucrose and two of fructan oligomers were synthesized.The structure of all products were confirmed by ^(13)C-NMR and ~1H-NMR spectra.
文摘: Benzoylated phenyl α - and β - 2-thio-D-fructofuranosides were synthesthed and firstly used as donors in coupling with sucrose acceptor. a-Fructohanoside was stereospecifically synthesized by employing NIS(N - iodosuccinimide)/AgOTf as catalysts. The structure of all products was confirmed by 13C-NMR or 1H-NMR spectrum
