Ketol

Some articles on ketol:

Ketol-acid Reductoisomerase
... In enzymology, a ketol-acid reductoisomerase (EC 1.1.1.86) is an enzyme that catalyzes the chemical reaction (R)-2,3-dihydroxy-3-methylbutanoate + NADP+ (S)-2-hydroxy-2-methyl ... dehydrogenase (isomerizing), acetohydroxy acid isomeroreductase, ketol acid reductoisomerase, alpha-keto-beta-hydroxylacyl reductoisomerase, 2-hydroxy-3-keto acid ...
Hajos–Parrish–Eder–Sauer–Wiechert Reaction
... procedure - shown in the reaction equation - leading to the optically active bicyclic ketol as well as the Eder-Sauer-Wiechert modification leading to the optically ... just 3% of proline to obtain the reaction product, a ketol in 93% enantiomeric excess ... enabling them to isolate the optically active intermediate bicyclic ketol ...
Hajos–Parrish–Eder–Sauer–Wiechert Reaction - Reaction Mechanism
... would be followed by ring closure to the above shown optically active bicyclic ketol product (see Figure 1.) under the influence of the catalytic amount of (S)-(-)-proline ... methyl-2-(3-oxobutyl)-1,3-cyclopentanedione gave the expected optically active bicyclic ketol (+)-(3aS,7aS)-3a,4,7,7a-tetrahydro-3a-hydroxy-7a-methyl-1,5(6H)-indanedione with (S)-(-)-proline ... bicyclic ketol enantiomer identical to the one obtained with unnatural (R)-(+)-proline ...
D-lyxose Ketol-isomerase
... In enzymology, a D-lyxose ketol-isomerase (EC 5.3.1.15) is an enzyme that catalyzes the chemical reaction D-lyxose D-xylulose Hence, this enzyme has one substrate, D-lyxose, and one ... Other names in common use include D-lyxose isomerase, and D-lyxose ketol-isomerase ...