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US 4,305,876 AGranted
Process for the manufacture of tertiary, optically active aliphatic compounds
AssigneeHoffmann-La Roche Inc.
InventorsRichard Barner, Walter Boguth, Hans G. W. Leuenberger, Max Schmid, Reinhard Zell
Life of this patent
Estimating the term…
Abstract
A process for asymmetrically hydrogenating through the use of microorganisms a double bond connected to tertiary carbon atom in an olefinic aliphatic compound to produce a tertiary, optically active aliphatic compound useful as an intermediate for optically active Vitamins E and K.
Claims3
(S)-Dihydro-4-methyl-2(3H)-furanone.
(S)-4-Methoxy-2-methyl-butan-1-ol.
(S)-3-Methyl-4-hydroxy-butyric acid ethyl ester.
Dependencies are inferred from the claim text.