Process for esterifying a polyphenolic oligomeric extract of pla

Details Process for esterifying a polyphenolic oligomeric extract of pla Process for esterifying a polyphenolic oligomeric extract of pla

1995-08-23

1998-09-15

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

554124, 554150, 526 1, 527100, 527602, 514546, 514552, 424 7803, C07C 5100

Patent

active

058081194

ABSTRACT:
Process for esterifying a polyphenolic oligomer extract of plant origin by the action of an acid chloride, the compositions obtained by this process and their use in human therapy or in cosmetics are described. The extract is placed in a liquid medium which is not a solvent for the extract but which is a solvent for the ester(s) to be obtained, so as to obtain a suspension. At least one aliphatic tertiary amine of low boiling point is added to the suspension in the presence of a catalytic amount of at least one organic base other than pyridine. At least one fatty acid chloride is introduced into this mixture, the reaction mixture being stirred at a temperature below 40.degree. C. and then concentrated by evaporation in order to obtain an esterified extract.

REFERENCES:
patent: 3984372 (1976-10-01), Cottman
French Search Report dated May 5, 1995 in French Appl. No. 94 10317.

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