Patents by Inventor Tsuyoshi Nishitoba

Tsuyoshi Nishitoba 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: 8324245
    Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X?CH or N; Z?O or S; L=O or S; M=CR10R11, wherein R10 and R11?H, alkyl, or alkoxy, NR12 wherein R12?H or alkyl; R1, R2, and R3?H or optionally substituted alkoxy; R4?H; R5-8?H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19?H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: December 4, 2012
    Assignee: Kyowa Hakko Kirin Co., Ltd.
    Inventors: Yasunari Fujiwara, Terufumi Senga, Tsuyoshi Nishitoba, Tatsushi Osawa, Atsushi Miwa, Kazuhide Nakamura
  • Publication number: 20110105747
    Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X=CH or N; Z=O or S; L=O or S; M=CR10R11, wherein R10 and R11=H, alkyl, or alkoxy, NR12 wherein R12=H or alkyl; R1, R2, and R3=H or optionally substituted alkoxy; R4=H; R5-8=H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19=H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.
    Type: Application
    Filed: January 10, 2011
    Publication date: May 5, 2011
    Applicant: KIRIN BEER KABUSHIKI KAISHA
    Inventors: Yasunari FUJIWARA, Terufumi Senga, Tsuyoshi Nishitoba, Tatsushi Osawa, Atsushi Niwa, Kazuhide Nakamura
  • Publication number: 20080312221
    Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X=CH or N; Z=O or S; L=O or S; M=CR10R11, wherein R10 and R11=H, alkyl, or alkoxy, NR12 wherein R12=H or alkyl; R1, R2, and R3=H or optionally substituted alkoxy; R4=H; R5-8=H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19=H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.
    Type: Application
    Filed: July 17, 2008
    Publication date: December 18, 2008
    Applicant: KIRIN BEER KABUSHIKI KAISHA
    Inventors: Yasunari Fujiwara, Terufumi Senga, Tsuyoshi Nishitoba, Tatsushi Osawa, Atsushi Miwa, Kazuhide Nakamura
  • Patent number: 7425564
    Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X=CH or N; Z=O or S; L=O or S; M=CR10R11, wherein R10 and R11=H, alkyl, or alkoxy, NR12 wherein R12=H or alkyl; R1, R2, and R3=H or optionally substituted alkoxy; R4=H; R5-8=H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19=H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: September 16, 2008
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Yasunari Fujiwara, Terufumi Senga, Tsuyoshi Nishitoba, Tatsushi Osawa, Atsushi Miwa, Kazuhide Nakamura
  • Publication number: 20060235033
    Abstract: An objective of the present invention is to provide compounds which have inhibitory activity against autophosphorylation of macrophage colony-stimulating factor receptors. The compounds of the present invention are represented by formula (I) and salt and solvate thereof: wherein X represents CH or N; Z represents O or S; R1, R2, and R3 represent H, optionally substituted alkoxy or the like; R4 represents H; R5, R6, R7, and R8 represent H, halogen, alkyl, alkoxy, trifluoromethyl or the like; R9 and R10 represent H, alkyl or the like; and any one of R11 and R12 represents H with the other representing alkyl and R13 represents an optionally substituted carbocyclic or heterocyclic ring or the like, or R11 represents H and R12 and R13 combine together to form a bicyclic carbocyclic ring.
    Type: Application
    Filed: May 1, 2003
    Publication date: October 19, 2006
    Inventors: Kazuo Kubo, Hiroaki Ohno, Toshiyuki Isoe, Tsuyoshi Nishitoba
  • Patent number: 6875884
    Abstract: Urea and thiourea derivatives inhibit cell function of the chemokine receptor CCR-3. These compounds offer an effective means for treating a range of diseases thought to be mediated by the CCR-3 receptor. A variety of useful urea and thiourea derivatives can be synthesized using liquid and solid phase synthesis protocols.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: April 5, 2005
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Janak Padia, Michael Hocker, Tsuyoshi Nishitoba, Hirohi Ohashi, Eiji Sawa
  • Publication number: 20040242603
    Abstract: An objective of the present invention is to provide compounds having potent antitumor activity.
    Type: Application
    Filed: June 17, 2004
    Publication date: December 2, 2004
    Inventors: Yasunari Fujiwara, Terufumi Senga, Tsuyoshi Nishitoba, Tatsushi Osawa, Kazuhide Nakamura
  • Patent number: 6143764
    Abstract: The present invention relates to novel quinoline derivatives and quinazoline derivatives represented by the following formula (I): ##STR1## [wherein R.sub.1 and R.sub.2 are each independently H or C.sub.1 -C.sub.4 -alkyl, or R.sub.1 and R.sub.2 together form C.sub.1 -C.sub.3 -alkylene, X is O, S or CH.sub.2, W is CH or N, and Q is a substituted aryl group or substituted heteroaryl group] and their pharmaceutically acceptable salts, having platelet-derived growth factor receptor autophosphorylation inhibitory activity, to pharmaceutical compositions containing these compounds, and to methods for the treatment of diseases associated with abnormal cell growth such as tumors.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: November 7, 2000
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Kazuo Kubo, Shinichi Ohyama, Toshiyuki Shimizu, Tsuyoshi Nishitoba, Shinichiro Kato, Hideko Murooka, Yoshiko Kobayashi