EP 1687326 A2 20060809 - METHOD FOR OBTAINING NATURAL PRODUCTS FROM PLANT MATERIAL
Title (en)
METHOD FOR OBTAINING NATURAL PRODUCTS FROM PLANT MATERIAL
Title (de)
VERFAHREN ZUR GEWINNUNG VON NATURSTOFFEN AUS PFLANZENMATERIAL
Title (fr)
PROCEDE DESTINE A OBTENIR DES PRODUITS NATURELS A PARTIR DE MATIERE VEGETALE
Publication
Application
Priority
- US 2004038252 W 20041110
- US 51898803 P 20031110
Abstract (en)
[origin: WO2005047304A2] The present invention provides a method for obtaining a natural product (e.g., betulin, lupeol and/or betulinic acid) from a plant extract (e.g., birch bark extract). The method employs a distillation with water and an organic solvent that (i) is water-immiscible, (ii) is capable of forming an azeotropic mixture with water, or (iii) has a boiling point of at least 100°C (e.g., toluene) and an aqueous base (e.g., KOH).
IPC 8 full level
C07J 63/00 (2006.01); A61K 31/00 (2006.01); C07C 29/86 (2006.01)
CPC (source: EP)
C07J 63/00 (2013.01)
Citation (search report)
See references of WO 2005047304A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005047304 A2 20050526; WO 2005047304 A3 20051110; EP 1687326 A2 20060809
DOCDB simple family (application)
US 2004038252 W 20041110; EP 04811101 A 20041110