Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-01-11
2005-01-11
McKane, Joseph K. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
06841683
ABSTRACT:
The present invention relates to a novel sulfonation of an intermediate of zonisamide. The sulfonation processes using chlorosulfonic acid as well as acetic anhydride and sulfuric acid in an organic solvent are disclosed. Crystalline forms of benzisoxazole methane sulfonic acid (BOS-H) and its salts (BOS-Na, BOS-Ca, and BOS-Ba) and their novel preparation processes are disclosed.
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Nidam et al., U.S. patent application, Publication No. 2003/0144527, Pub. Date: Jul. 31, 2003; Application No. 10/288,135, filed Nov. 5, 2002, “Novel Sulfonation Method for Zonisamide Intermediate in Zonisamide Synthesis and Their Novel Crystal Forms,” 35 pp.
Nidam et al., Claims from U.S. patent application No. 10,288,135, filed Nov. 5, 2002, “Novel Sulfonation Method for Zonisamide Intermediate in Zonisamide Synthesis and Their Novel Crystal Forms,” 2 pp.
Mendelovici et al., Claims from U.S. patent application No. 10/662,966, filed Sep. 15, 2003, “Novel Sulfonation Method for Zonisamide Intermediate in Zonisamide Synthesis and Their Novel Crystal Forms,” 3 pp.
Mendelovici et al., Claims from U.S. patent application No. 10/662,986, filed Sep. 15, 2003, “Novel Sulfonation Method for Zonisamide Intermediate in Zonisamide Synthesis and Their Novel Crystal Forms,” 3 pp.
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Hitoshi Uno et al., “Studies on 3-Substituted 1,2-Benzisoxazole Derivatives. VII1)Catalytic Reduction of 3-Sulfamoylmethyl-1,2-benzisoxazole and Reactions of the Resulting Products,” Chem. Pharm. Bull., vol. 30, No. 1, pp. 333-335 (1981).
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Mendelovici Marioara
Nidam Tamar
Schwartz Eduard
Wizel Shlomit
Anderson Rebecca
Kenyon & Kenyon
McKane Joseph K.
Teva Pharmaceutical Industries Ltd.
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