FLAVONOID DERIVATIVE COMPOUNDS AND METHOD FOR PREPARING SAME BY DEPOLYMERIZATION OF CONDENSED TANNINS

FLAVONOID DERIVATIVE COMPOUNDS AND METHOD FOR PREPARING SAME BY DEPOLYMERIZATION OF CONDENSED TANNINS

The invention concerns a compound of general formula (I) in which R1, R2, R3 and R5, identical or different, each represent a hydrogen atom or a hydroxyl group, optionally protected by a protecting group; R4 represents a hydrogen atom or an -OR7 group, in which R7 represents a hydrogen atom, a prote...

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Bibliographische Detailangaben
Hauptverfasser: ROUMEAS LAURENT, DUBREUCQ ERIC, FULCRAND HÉLÈNE, AOUF CHAHINEZ
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:The invention concerns a compound of general formula (I) in which R1, R2, R3 and R5, identical or different, each represent a hydrogen atom or a hydroxyl group, optionally protected by a protecting group; R4 represents a hydrogen atom or an -OR7 group, in which R7 represents a hydrogen atom, a protecting group or a gallate group; R6 represents a hydroxyl group, optionally protected by a protecting group; and R'1, R'2, R'3 and R'4, identical or different, each represent a hydrogen atom or a substituent not comprising a mesomeric electron withdrawing group conjugated with the furan ring, a substituent from R'1, R'2, R'3 and R'4 representing the covalent bond with the pyran ring; or one of the salts of same. A method for obtaining such a compound comprises a step of depolymerisation of condensed tannins in the presence of an acid by means of a nucleophile derived from furan.