Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Reexamination Certificate
2007-08-07
2007-08-07
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
C562S101000
Reexamination Certificate
active
10871543
ABSTRACT:
The present invention is directed to methods of preparation of sulfonate derivatized compounds, e.g., 3-amino-1-propanesulfonic acid and 1,3-propanedisulfonic acid disodium salt with increased purity, with reduced potential for toxic by-products, and that are pharmaceutically useful, e.g., for the treatment of amyloidosis.
REFERENCES:
patent: 4085134 (1978-04-01), Redmore et al.
patent: 5972328 (1999-10-01), Kisilevsky et al.
patent: 6562836 (2003-05-01), Szarek et al.
patent: 1442405 (2003-09-01), None
patent: 1200929 (2005-11-01), None
patent: 0 293 672 (1988-12-01), None
patent: 0 293 672 (1991-10-01), None
patent: 0 860 519 (1998-08-01), None
patent: 307776 (1965-01-01), None
patent: 1568065 (1969-05-01), None
patent: 764 340 (1956-12-01), None
patent: 1 319 841 (1973-06-01), None
patent: WO 96/28187 (1996-09-01), None
patent: WO 99/40909 (1999-08-01), None
patent: WO 00/64420 (2000-11-01), None
Science Lab, Science Lab.com, 1987,www.sciencelab .com/page/S/PVAR/10423/SLP4327.
AcrosOrganics AcrosOrganics w/MSDS , 1996 , www.chemexper.com/index.shtml?main=http://www.chemexper.com/search/cas/3687-18.1.
Allen, CFH et al. “Sultones as Agents for Derivatizing Aliphatic Amines in Qualitiative Organic Analysis”Anal. Chem. 37(1): 156-158 (1965).
Helberger et al.Justus Liebigs Ann. Chem. 586: 158-63 (1954); abs. from Beilstein Database, Database accession No. Reaction ID 69948.
King, JF et al.Can J. Chem. 61: 235-43 (1983); abs. from Beilstein Database, Database accession No. BRN 5931024.
Helferich B et al.Justus Liebigs Ann. Chem. 37-40 (1971); abs. from Beilstein Database, Database accession No. BRN 2434022.
Erman, WF et al. “Synthesis and Facile Cleavage of Five-membered Ring Sultams”J. Org. Chem. 26: 4841-50 (1961).
International Search Report and Written Opinion from PCT/IB2004/002563.
Kong Xianqi
Migneault David
Wu Xinfu
Lahive & Cockfield LLP
Neurochem (International) Limited
Zucker Paul A.
LandOfFree
Pharmaceutical drug candidates and methods for preparation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pharmaceutical drug candidates and methods for preparation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pharmaceutical drug candidates and methods for preparation... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3889095