Production of taxol and taxanes

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C549S511000, C435S123000

Reexamination Certificate

active

06939978

ABSTRACT:
A high yield, economical process for purifying taxanes from yew biomass is disclosed. The process does not require initial liquid:liquid portioning of the crude extract to separate highly polar substances. The organic solvent extract of the biomass is adsorbed onto and selectively desorbed from an adsorption resin to provide a taxane enriched eluate. Substantially pure individual taxanes may be further isolated from the eluate by hydrophobic-interaction chromatography.

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