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US 8,299,274 B2Granted
Process for producing carnosol from carnosic acid using hydrogen peroxide or peracids
AssigneeDsm IP Assets B.V.
InventorChristof Wehrli
Life of this patent
Estimating the term…
Abstract
Novel catalytic processes for the production of carnosol from carnosic acid using hydrogen peroxide or a peracid are presented. The carnosic acid may be in pure form, in an impure form, part of a plant extract, or may be present in rosemary needles. The catalyst may be iron, iron salts, a minor amount of water, rosemary needles, or a mixture thereof.
Claims12
A process for converting carnosic acid to carnosol comprising the steps of:
- a) exposing carnosic acid to a solvent comprising a catalyst selected from the group consisting of minor amounts of water, iron, iron salt, rosemary needles and mixtures thereof, and
- b) introducing an oxidation agent selected from the group consisting of hydrogen peroxide and a source of hydrogen peroxide to produce carnosol.
Dependencies are inferred from the claim text.