Protected 3,-5-dihydroxy-2,2-dimethyl-valeronitriles for the...

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

Reexamination Certificate

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C549S214000, C549S333000, C558S389000, C558S451000, C556S417000

Reexamination Certificate

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07034165

ABSTRACT:
The invention relates to 3,5-dihydroxy-2,2-dimethyl-valeronitriles for the synthesis of epothilones and epothilone derivatives and process for the production of these new intermediate products in the synthesis and the use for the production of epothilones or epothilone derivatives.

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patent: 6211412 (2001-04-01), Georg et al.
patent: 6457303 (2002-10-01), Georg et al.
patent: 6603015 (2003-08-01), Georg et al.
patent: 6730803 (2004-05-01), Iwasaki et al.
patent: 00/58254 (2000-10-01), None
Schinzer D et al: Chemistry-A European Journal, vol. 2, No. 11, 1996, pp 1477-1482.
Schinzer D et al: Angewandte Chemie, vol. 109, No. 5, 1997, pp. 523-524.
Johann Mulzer et al: J. Org. Chem., vol. 65, No. 22, 2000, pp. 7456-7467.
Statutory Disclaimer of claims 1, 2, 9, 10, 25 and 26 in U.S. 6,730,803 by patent owner.

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