Chemo-enzymatic synthesis of precursors of fagomine and 1,4-dideoxy-1,4-imino-D-arabinitol
摘要:
The enantioselectivity of transketolase towards, alpha-hydroxy-aldehydes is used to prepare compounds bearing two asymmetric centres, precursors of natural products: 2,3-dideoxynojirimycine (fagomine), 1,4-dideoxy-1,4-imino-D-arabinitol, and its oxidised form.
Chemo-enzymatic synthesis of new protected aldoketoses: Intermediates in the biosynthesis and chemical synthesis of nojirimycin and mannojirimycin
摘要:
Condensation of dihydroxy acetone phosphate (DHAP) on new hydroxy-aldehydes catalysed by fructose-1,6-diphosphate aldolases provides two aldoketoses presumed intermediates in the biosynthesis of nojirimycin and mannojirimycin, as well as useful precursors for the chemical synthesis of these aminosugars and some analogues.