Process for the preparation of one or more C-glycoside derivatives, including a catalytic reduction step.

The described purification process for C-glycoside derivatives using a cationic ion exchange resin in an aqueous medium addresses the inefficiencies of conventional methods, achieving high purity and yield while minimizing odorous impurities and environmental footprint.

JP2026521213APending Publication Date: 2026-06-26LOREAL SA

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
LOREAL SA
Filing Date
2024-07-03
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Conventional purification processes for C-glycoside derivatives in cosmetic applications are cumbersome, inefficient, and result in unsatisfactory yield and purity, particularly on an industrial scale, due to the formation of impurities like organic salts and unpleasant odors, which are difficult to remove and lead to increased wastewater and reduced compatibility with other additives.

Method used

A process involving a purification step with a cationic ion exchange resin in an aqueous medium to convert impurities into less odorous forms, followed by separation, without the use of organic solvents, optimizing the purification process for industrial-scale production of high-purity C-glycoside derivatives.

Benefits of technology

The process significantly reduces impurities, including those causing unpleasant odors, improves yield, and minimizes environmental impact by reducing organic wastewater, making it easier to implement industrially and enhancing product quality.

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Abstract

The present invention relates to a process for preparing one or more C-glycoside derivatives corresponding to formula (I), preferably formula (I'), and solvates such as optical isomers, geometric isomers, and / or hydrates thereof, comprising at least one purification step carried out in an aqueous medium. The present invention also relates to a process for preparing one or more C-glycoside derivatives corresponding to formula (I'B), comprising a reduction step of at least one compound of formula (I), preferably a compound of formula (I'), carried out in an aqueous medium. JPEG2026521213000031.jpg77170
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