Patents by Inventor Atsuhiko Zanka

Atsuhiko Zanka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparation of piperidin-2-ylacetic acid
    Publication number: 20050075270
    Abstract: Piperidin-2-ylacetic acid (II) is efficiently and safely produced in industrial scale by treating piperidin-2-ylethanol (I) with 2,2,6,6-tetramethylpiperidin-1-oxyl, sodium hypochlorite and sodium chlorite in a two phase solvent comprising an organic solvent and water without using strongly toxic chromium trioxide.
    Type: Application
    Filed: August 21, 2002
    Publication date: April 7, 2005
    Inventors: Atsuhiko Zanka, Takami Okamoto, Norio Hashimoto, Shunsuke Goto
  • Thiazole derivative and pharmaceutical use thereof
    Publication number: 20050004134
    Abstract: A thiazole derivative of the formula (I): wherein R is a 1-optionally substituted-6-oxo-1,6-dihydro-3-pyridazinyl, R? is an optionally substituted phenyl, and R2 is hydrogen, a group of the formula (i): wherein R4 is hydrogen, lower alkyl or lower alkenyl, and R5 is hydrogen, optionally substituted lower alkyl, acyl, cyclo(lower)alkyl, lower alkenyl, optionally substituted aryl or heterocyclic, or a group of the formula (ii): wherein X is oxygen or sulfur, R8 is hydrogen or lower alkyl, R9 is hydrogen, optionally substituted lower alkyl, cyclo(lower)alkyl, lower alkoxy or mono- or di-lower alkylamino or R8 and R9 may combine together to form optionally substituted saturated N-containing heterocyclic, or a salt thereof.
    Type: Application
    Filed: November 8, 2002
    Publication date: January 6, 2005
    Inventors: Hideo Tsutsumi, Seiichiro Tabuchi, Atsushi Akahane, Hironobu Yasuda, Hiroki Omori, Kiyoshi Temmaru, Atsuhiko Zanka
  • Novel selective deacetylating agents
    Publication number: 20030009030
    Abstract: A compound of the formula: 1
    Type: Application
    Filed: June 13, 2002
    Publication date: January 9, 2003
    Inventors: Shunsuke Goto, Hironobu Yasuda, Atsuhiko Zanka, Hiroki Omori, Satoshi Hirabayashi