Patents by Inventor Yuzo Kasuga

Yuzo Kasuga 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).

  • METHOD FOR PREPARING CARBOXYLIC ACID COMPOUND
    Publication number: 20100261933
    Abstract: A method for conveniently preparing 2,2-dichloro-12-(4-chlorophenyl)-10-hydroxydodecanoic acid useful as an active ingredient of therapeutic agents for diseases such as diabetes at a high yield, which comprises the step of reacting a compound represented by the following general formula (A): wherein X represents a halogen atom, and a compound represented by the following general formula (B): CHCl2COOR1 wherein R1 represents hydrogen atom or a protective group of carboxyl group, to prepare a compound represented by the following general formula (C): wherein R1 has the same meaning as that defined above.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 14, 2010
    Applicant: KOWA COMPANY, LTD.
    Inventors: Manabu Katsurada, Yasuko Nakajima, Yuzo Kasuga, Kazuhiro Onogi, Toshiaki Oda
  • Process for producing (3R,5S)-(E)-7-[2-cyclopropyl-4-(4-fluorophenyl)-quinolin- 3-yl]-3, 5-dihydroxyhept-6-enic acid esters
    Publication number: 20040030139
    Abstract: A process for producing a compound represented by the following formula (IV): 1
    Type: Application
    Filed: July 30, 2003
    Publication date: February 12, 2004
    Inventors: Mari Hara, Yuki Takuma, Manabu Katsurada, Akemi Hosokawa, Youichi Matsumoto, Yuzo Kasuga, Naoyuki Watanabe
  • 2-cyanopiperazine and method of producing the same
    Patent number: 5698697
    Abstract: 2-Cyanopiperazine represented by the following formula (1): ##STR1## or a salt thereof. The 2-cyanopiperazine can be produced by reacting a 2-halogenoacrylonitrile with ethylenediamine or by reacting a 2,3-dihalogenopropionitrile with ethylenediamine.The 2-cyanopiperazine is useful as an intermediate for medicaments, agricultural chemicals, etc., and optically active N-tert-butyl-2-piperazine carboxamide, which is useful as an intermediate in preparation of the HIV protease inhibitor indinavir, can be easily produced using the 2-cyanopiperazine.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: December 16, 1997
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yuki Takuma, Yuzo Kasuga, Takeki Miyazaki, Yuji Mizuho, Ken Okamoto