Semi-synthetic process for the preparation of...

Details Semi-synthetic process for the preparation of... Semi-synthetic process for the preparation of...

2006-05-30

2006-05-30

Dentz, Bernard (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S510000, C549S511000, C562S431000

Reexamination Certificate

active

07053222

ABSTRACT:
A process for the preparation of N-debenzoylpaclitaxel (I) through esterification of 7-protected baccatin III with a carboxylic acid reactive derivative of general formula (II), and elimination of the ester-protecting groups in acid conditions and in a single step. In formula (II) R1 is aryl or heteroaryl. The compound of formula (I) can be conveniently used for the preparation of paclitaxel and analogues

REFERENCES:
patent: 97/42167 (1997-11-01), None
patent: 98/08833 (1998-03-01), None

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