Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-10-18
2005-10-18
Owens, Amelia A. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S511000
Reexamination Certificate
active
06956124
ABSTRACT:
There is disclosed a process for the preparation of 4-acetoxy-2α-benzoyloxy-5β,20-epoxy-1,13α-dihydroxy-9-oxo-19-norcyclopropa[g] tax-11-ene from 4-acetoxy-2α-benzoyloxy-5β,20-epoxy-1,13α-dihydroxy-9-oxo-7β-(trifluoromethyl sulfonyloxy) tax-11-ene by reaction with a molecular sieve in sulfolane.
REFERENCES:
patent: WO 94/13654 (1994-06-01), None
patent: WO 95/20582 (1995-08-01), None
patent: WO 95/33736 (1995-12-01), None
patent: WO 95/33737 (1995-12-01), None
patent: WO 96/13494 (1996-05-01), None
patent: WO 96/32387 (1996-10-01), None
Amouret Guy
Didier Eric
Aventis Pharma S.A.
Gupta Balaram
Owens Amelia A.
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