Helvetica Chimica Acta p. 1721 - 1737 (1994)
Update date:2022-08-03
Topics:
Stocker
Netscher
Ruttimann
Muller
Schneider
Todaro
Derungs
Woggon
Incubation of the synthetic 18O-labelled phytyl-hydroquinone (O4-18O)-2 with the tocopherol cyclase from Anabaena variabilis Kutzing (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 bond of 2 and concomitant re-attack of the phenolic O-atom.
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Doi:10.1002/jccs.201300372
(2014)Doi:10.1016/0040-4020(94)00952-Q
(1995)Doi:10.1134/S1070428014060219
(2014)Doi:10.5562/cca2482
(2014)Doi:10.1016/S0957-4166(03)00577-9
(2003)Doi:10.1016/S0040-4039(00)77151-6
(1994)