Hydroxide-catalyzed isomerization of d-[1-13C]mannose: Evidence for the involvement of 3,4-enediols
作者:Melinda J. King-Morris、Anthony S. Serianni
DOI:10.1016/s0008-6215(00)90019-3
日期:1986.10
The KOH-catalyzed isomerization of D-[1-13C]mannose under anaerobic conditions was studied by 13C-n.m.r. spectroscopy. D-[1-13C]Glucose and D-[1-13C]fructose are generated during the reaction, as expected. In addition, however, [6-13C]glucose, [6-13C]mannose, and [6-13C]fructose are produced in small proportions, possibly via symmetrical 3,4-enediol intermediates. The involvement of the latter structures in 13C-label shifting is inferred from the observation of [1-13C]sorbose and [6-13C]sorbose in the reaction mixture.