Process for the preparation of cephalosporin compounds and...

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

Reexamination Certificate

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C540S301000, C540S222000, C540S228000, C540S230000

Reexamination Certificate

active

10994983

ABSTRACT:
There is provided a process for the preparation of a compound according to Formula (II):which includes the step of cyclizing a compound of Formula (III):wherein R1, R2, R3, R4, X and m have meanings which are given in the description.

REFERENCES:
patent: 5464826 (1995-11-01), Grindey et al.
patent: 5688925 (1997-11-01), Allevi et al.
patent: 6825344 (2004-11-01), Best et al.
patent: 25 55 182 (1976-06-01), None
patent: 35 16 777 (1985-11-01), None
patent: 92/01696 (1992-02-01), None
patent: WO 9201696 (1992-02-01), None
patent: 93/25551 (1993-12-01), None
patent: WO 9325551 (1993-12-01), None
patent: 94/00457 (1994-01-01), None
patent: 96/17847 (1996-06-01), None
patent: WO 9617847 (1996-06-01), None
Valcavi, Gazz. Chem Italicana 110, 519 (1980).
Elliott, et al.; Cycloadditions of Cephalosporins; J. Org. Chem. 62:4998-5016 (1997).
Smith, Organic Synthesis, (McGraw Hill, 1994) pp. 629-630, 638.
Hawley's Condensed Chemical Dictionary 1th edition pp. 21-22.
Elliott et al., “Cycloadditions of Cephalosporins. A Comprehensive Study of the Reaction of Cephalosporin Triflates with Olefins, Acetylenes, and Dienes to Form [2+2] and [4+2] Adducts”, J. Org. Chem., vol. 62, 1997, pp. 4998-5016.
Chemical Abstracts, vol. 115, 114205u, 1991 (Tanaka et al.).
Chemical Abstracts, vol. 114, 185088y, 1991 (Tanaka et al.).
Roush et al., “Diastereo- and Enantioselective Aldehyde Addition Reactions of 2-Allyl-1,3,2-dioxaborolane-4,5-dicarboxylic Esters, a Useful Class of Tartrate Ester Modified Allylboronates”, J. Am. Chem. Soc., vol. 107, No. 26, 1985, pp. 8186-8190.
Tanaka et al., “A Facile Access to 3-Formyl-3-cephems Through Oxygen or Air Oxidation of 3-Iodomethyl-3-cephems”, Synlett Letters, pp. 660-662, 1990.
Hawley's Condensed Chemical Dictionary 11th Edition, pp. 21-22, 1984.
Valcavi et al., “Some Novel C(3)-Substituted Cephalothin Derivatives”, Gazzetta Chimica Italiano, vol. 110, 1980, pp. 519-522.
Smith, Organic Synthesis (McGraw Hill, 1994), pp. 629-630, 638.
Streitwieser, Introduction to Organic Chemistry 4th Edition (Macmillan, 1992), pp. 451-452.
European Search Report, EP 01306325.0, dated Dec. 20, 2001.

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