HUGHES, L.;SLABY, M.;BURTON, G. W.;INGOLD, K. U., J. LABELL. COMPOUNDS AND RADIOPHARM., 28,(1990) N, C. 1049-1057
作者:HUGHES, L.、SLABY, M.、BURTON, G. W.、INGOLD, K. U.
DOI:——
日期:——
The Reaction Mechanism of Chromanol-Ring Formation Catalyzed by tocopherol cyclase from<i>Anabaena variabilis</i>K<scp>ÜTZING</scp>(<i>Cyanobacteria</i>)
作者:Achim Stocker、Giusep Derungs、Wolf-Dietrich Woggon、Thomas Netscher、August Rüttimann、Robert K. Müller、Heinz Schneider、Louis J. Todaro
DOI:10.1002/hlca.19940770705
日期:1994.11.2
Incubation of the synthetic 18O-labelled phytyl-hydroquinone (O4-18O)-2 with the tocopherolcyclase from Anabaena variabilis KÜTZING (Cyanobacteria) in D2O furnished the doubly labelled γ-tocopherol, (2R,3S,4′R,8′R)-(1-18O,3-2H)-1. The chirality at C(3) was determined by two independent routes providing interlocking evidence that the enzyme-catalyzed ring closure proceeds by si-protonation of the double