Patents by Inventor Kazunori Wakasugi

Kazunori Wakasugi 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).

  • Patent number: 8377938
    Abstract: The invention provides acid addition salts of the compounds represented by formula (1) or (2), or crystals thereof, and processes for preparing the same. The salts or crystals have HGFR inhibitory activity and excellent physical properties (solubility, safety, etc.) and are therefore useful as anti-tumor agents, angiogenesis inhibitors and inhibitors for metastasis for a various types of tumor.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: February 19, 2013
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Tomohiro Matsushima, Shuji Shirotori, Keiko Takahashi, Atsushi Kamada, Kazunori Wakasugi, Takahisa Sakaguchi
  • Publication number: 20100280243
    Abstract: 4-(Substituted phenyl)hexahydropyrido[2,1-c][1,4]oxazin-6-one represented by formula (I) or a salt thereof is useful as an intermediate for the production of a bicyclic cinnamide compound which is an A? production inhibitor. 4-(Substituted phenyl)hexahydropyrido[2,1-c][1,4]oxazin-6-one or the salt thereof can be produced in an industrially advantageous manner by subjecting a compound represented by formula (II) or a salt thereof to an intramolecular condensation reaction.
    Type: Application
    Filed: December 25, 2008
    Publication date: November 4, 2010
    Inventors: Akio Kayano, Mitsuo Nagai, Yorihisa Hoshino, Kazunori Wakasugi, Masaaki Matsuda, Atsushi Kamada, Minetaka Isomura, Yoshihiro Nishikawa, Seiji Yoshikawa, Daisuke Shimmyo
  • Patent number: 7790885
    Abstract: A process for preparing a compound represented by the formula (I): comprising reacting a compound represented by the formula (II) or salt thereof: with a compound represented by the formula (III): in the presence of a condensation reagent, wherein R1 represents 1) optionally substituted azetidin-1-yl, 2) optionally substituted pyrrolidin-1-yl, 3) optionally substituted piperidin-1-yl, etc.; R2, R3, R4 and R5 may be the same or different and each represents hydrogen or fluorine; and R6 represents hydrogen or fluorine.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: September 7, 2010
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Mitsuo Nagai, Tomohiro Matsushima, Atsushi Kamada, Kazunori Wakasugi, Shuji Shirotori, Shinya Abe, Kazumasa Nara, Takahisa Sakaguchi
  • Publication number: 20100094001
    Abstract: The present invention provides a process or the like which is employed for producing chloromethyl phosphate derivatives that are useful for producing water-soluble prodrugs, and which are excellent from the points of view of workability, operativity and energy saving. According to the present invention, there is provided a process for producing a composition containing a compound represented by the following formula (I) and a tertiary amine, (wherein R1 and R2 are identical or different from each other, and represent a C1-C6 alkyl group, a C2-C6 alkenyl group or a C6-C14 aryl C1-C6 alkyl group which may have a substituent, and R1 and R2 may together form a ring), the process comprising the step of adding the tertiary amine having a boiling point at 1 atmosphere of 150° C. or higher to the compound represented by formula (I).
    Type: Application
    Filed: March 5, 2008
    Publication date: April 15, 2010
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Keizo Sato, Shinya Abe, Kazuhiro Yoshizawa, Kazunori Wakasugi, Shigeto Negi, Mamoru Miyazawa
  • Publication number: 20090270623
    Abstract: A compound (8) represented by the formula: (8) wherein R1 represents a 6- to 14-membered aromatic hydrocarbon ring group which may have a substituent; and n represents 0 to 2, can be produced with good efficiency by reacting a compound (3) represented by the formula: (3) wherein R1 and n are as defined above; and Q represents a single bond or —CH(Y)— where Y represents a hydrogen atom or a C1-6 alkyl group] with 3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzaldehyde in the presence of a base.
    Type: Application
    Filed: November 17, 2006
    Publication date: October 29, 2009
    Inventors: Naoyuki Shimomura, Nobuaki Sato, Toshihiko Kaneko, Mamoru Takaishi, Kazunori Wakasugi, Seiji Yoshikawa, Yoshihiro Nishikawa, Taiju Nakamura, Tohru Fukuyama
  • Publication number: 20090163715
    Abstract: A compound represented by the general formula below or a salt thereof is a useful intermediate in the production of a [2-(3,3,5,5-tetramethylcyclohexyl)phenyl]piperazine compound that has excellent cell adhesion inhibitory effect and cell invasion inhibitory effect and therefore is useful as a therapeutic or prophylactic agent for various inflammatory diseases and autoimmune diseases induced by the adhesion and invasion of leukocytes, such as inflammatory bowel diseases (particularly ulcerative colitis or Crohn's disease), irritable bowel syndrome, rheumatoid arthritis, psoriasis, multiple sclerosis, asthma and atopic dermatitis. wherein R1 and R2 independently represent hydrogen or a protecting group for an amino group, or R1 and R2 bond together to form an optionally substituted pyrrole ring.
    Type: Application
    Filed: May 25, 2006
    Publication date: June 25, 2009
    Applicant: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Mitsuo Nagai, Kazumasa Nara, Kazunori Wakasugi, Toshihiko Naito
  • Publication number: 20080318924
    Abstract: The invention provides acid addition salts of the compounds represented by formula (1) or (2), or crystals thereof, and processes for preparing the same. The salts or crystals have HGFR inhibitory activity and excellent physical properties (solubility, safety, etc.) and are therefore useful as anti-tumor agents, angiogenesis inhibitors and inhibitors for metastasis for a various types of tumor.
    Type: Application
    Filed: February 14, 2008
    Publication date: December 25, 2008
    Applicant: Eisai R&D Management Co., Ltd
    Inventors: Tomohiro MATSUSHIMA, Shuji Shirotori, Keiko Takahashi, Atsushi Kamada, Kazunori Wakasugi, Takahisa Sakaguchi
  • Publication number: 20080214815
    Abstract: A process for preparing a compound represented by the formula (I): comprising reacting a compound represented by the formula (II) or salt thereof: with a compound represented by the formula (III): in the presence of a condensation reagent, wherein R1 represents 1) optionally substituted azetidin-1-yl, 2) optionally substituted pyrrolidin-1-yl, 3) optionally substituted piperidin-1-yl, etc.; R2, R3, R4 and R5 may be the same or different and each represents hydrogen or fluorine; and R6 represents hydrogen or fluorine.
    Type: Application
    Filed: August 27, 2007
    Publication date: September 4, 2008
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Mitsuo Nagai, Tomohiro Matsushima, Atsushi Kamada, Kazunori Wakasugi, Shuji Shirotori, Shinya Abe, Kazumasa Nara, Takahisa Sakaguchi