Patents by Inventor Masahiro Fuji

Masahiro Fuji 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).

  • Publication number: 20170066754
    Abstract: The present invention provides an integrase inhibitor. The inventors have found the following compound of formula (I) possessing an integrase inhibitory activity. (wherein, RC and RD taken together with the neighboring carbon atoms form a ring which may be a condensed ring, Y is hydroxyl, mercapto or amino; Z is O, S or NH; RA is a group shown by (wherein, C ring is N-containing aromatic heterocycle) or the like).
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Applicant: SHIONOGI & CO., LTD.
    Inventors: Ryuichi KIYAMA, Yasuhiko KANDA, Yukio TADA, Toshio FUJISHITA, Takashi KAWASUJI, Shozo TAKECHI, Masahiro FUJI
  • Patent number: 9572813
    Abstract: The present invention provides an integrase inhibitor. The inventors have found the following compound of formula (I) possessing an integrase inhibitory activity. (wherein, RC and RD taken together with the neighboring carbon atoms form a ring which may be a condensed ring, Y is hydroxyl, mercapto or amino; Z is O, S or NH; RA is a group shown by (wherein, C ring is N-containing aromatic heterocycle) or the like).
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: February 21, 2017
    Assignee: Shionogi & Co., Ltd.
    Inventors: Ryuichi Kiyama, Yasuhiko Kanda, Yukio Tada, Toshio Fujishita, Takashi Kawasuji, Shozo Takechi, Masahiro Fuji
  • Publication number: 20150202208
    Abstract: The present invention provides an integrase inhibitor. The inventors have found the following compound of formula (I) possessing an integrase inhibitory activity. (wherein, RC and RD taken together with the neighboring carbon atoms form a ring which may be a condensed ring, Y is hydroxyl, mercapto or amino; Z is O, S or NH; RA is a group shown by (wherein, C ring is N-containing aromatic heterocycle) or the like).
    Type: Application
    Filed: January 23, 2015
    Publication date: July 23, 2015
    Inventors: Ryuichi KIYAMA, Yasuhiko KANDA, Yukio TADA, Toshio FUJISHITA, Takashi KAWASUJI, Shozo TAKECHI, Masahiro FUJI
  • Patent number: 7759372
    Abstract: A compound of the formula (I): wherein Z4, Z5 and Z9 each is independently carbon atom or nitrogen atom; Y is hydroxy, mercapto or amino; RA is a group of the formula: (wherein C ring is nitrogen-containing heteroaryl) has an inhibitory activity against integrase.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: July 20, 2010
    Assignee: Shionogi & Co., Ltd.
    Inventors: Masahiro Fuji, Hidenori Mikamiyama, Hitoshi Murai
  • Publication number: 20060293334
    Abstract: A compound of the formula (I): wherein Z4, Z5 and Z9each is independently carbon atom or nitrogen atom; Y is hydroxy, mercapto or amino; RA is a group of the formula: (wherein C ring is nitrogen-containing heteroaryl) has an inhibitory activity against integrase.
    Type: Application
    Filed: August 8, 2006
    Publication date: December 28, 2006
    Inventors: Masahiro Fuji, Hidenori Mikamiyama, Hitoshi Murai
  • Patent number: 7148237
    Abstract: A compound of the formula (I): wherein Z4, Z5 and Z9 each is independently carbon atom or nitrogen atom; Y is hydroxy, mercapto or amino; RA is a group of the formula: (wherein C ring is nitrogen-containing heteroaryl) has an inhibitory activity against integrase.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: December 12, 2006
    Assignee: Shionogi & Co., Ltd.
    Inventors: Masahiro Fuji, Hidenori Mikamiyama, Hitoshi Murai
  • Publication number: 20040256376
    Abstract: A stable and durable heat-generating element and substrate, a method of efficient and highly precise manufacture of same, and equipment utilizing same are obtained. Employing as material a silicon substrate into at least a portion of which boron or another impurity is diffused to impart conductivity, a heater portion, in which are provided one or a plurality of slits the corner portions of which are removed or are rounded, is fabricated integrally on the silicon substrate by etching processes. Simultaneously with this, a depression portion provided below to control the heating state of the heater portion is formed integrally.
    Type: Application
    Filed: June 20, 2003
    Publication date: December 23, 2004
    Inventors: Katsuji Arakawa, Masahiro Fuji, Hiroshi Koeda
  • Publication number: 20040229909
    Abstract: The present invention provides an integrase inhibitor. The inventors have have found the following compound of formula (I) possessing an integrase inhibitory activity.
    Type: Application
    Filed: January 30, 2004
    Publication date: November 18, 2004
    Inventors: Ryuichi Kiyama, Yasuhiko Kanda, Yukio Tada, Toshio Fujishita, Takashi Kawasuji, Shozo Takechi, Masahiro Fuji
  • Patent number: 6787545
    Abstract: The present invention provides a compound having sPLA2 inhibiting activity. The compound represented by the formula (I): wherein R1 is C1 to C20 alkyl, C2 to C20 alkenyl, C2 to C20 alkynyl, carbocyclic groups, heterocyclic groups or the like; R2 is a hydrogen atom or a group containing 1 to 4 non-hydrogen atoms; RA is —COCONH2 or the like; R3 is -(L2)-(acidic group) wherein L2 is a group connecting with an acid group; R4 is a hydrogen atom or the like, its prodrug, their pharmaceutically acceptable salt, or solvate thereof.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: September 7, 2004
    Assignee: Shiongi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji, Tomoyuki Ogawa
  • Publication number: 20040127708
    Abstract: A compound of the formula (I): 1
    Type: Application
    Filed: August 18, 2003
    Publication date: July 1, 2004
    Inventors: Masahiro Fuji, Hidenori Mikamiyama, Hitoshi Murai
  • Patent number: 6756376
    Abstract: The present invention provides a compound having sPLA2 inhibiting activity. The compound represented by the formula (I): wherein E is N or C—R4; G is N or C—R25; R1 is a carbocyclic group, heterocyclic group or the like; one of R3 and R4 is —(L2)-(acidic group), the other is a hydrogen atom, wherein L2 is a group connecting with an acid group; A ring is optionally substituted 5-8 membered cyclohexane ring or cyclohexene ring; R24 and R25 are a hydrogen atom or the like, its prodrug, their pharmaceutically acceptable salt, or hydrate thereof.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: June 29, 2004
    Assignee: Shionogi & Co., Ltd.
    Inventors: Masahiro Fuji, Tetsuo Okada, Makoto Adachi
  • Patent number: 6703385
    Abstract: The present invention provides a compound having sPLA2 inhibiting activity. The compound represented by the formula (I): wherein R1 is (a) C1 to C20 alkyl, C2 to C20 alkenyl, C2 to C20 alkynyl, carbocyclic groups, heterocyclic groups or the like; R2 is COCONH2 or the like; Q1 is a nitrogen atom or C—R4; one of R3 and R4 is —(L2)-(acidic group) wherein L2 is a group connecting with an acid group and the length of the connecting groups 1 to 5 atoms, and the other is a hydrogen atom; R21 and R22 are hydrogen atoms or the like; X is —CR23R24— or the like wherein R23 and R24 are hydrogen atoms or the like; Y is —CR25R26— or the like wherein R25 and R26 are hydrogen atoms or the like; Z is CH2 or the like; a broken line ( - - - ) represents the presence or absence of a bond, its prodrug, their pharmaceutically acceptable salt, or solvate thereof.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: March 9, 2004
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji, Makoto Adachi, Tomoyuki Ogawa
  • Patent number: 6673781
    Abstract: The present invention provides a compound having sPLA2 inhibiting activity. The compound represented by the formula (I): wherein R1 is (a) C1 to C20 alkyl, C2 to C20 alkenyl, C2 to C20 alkynyl, carbocyclic groups, heterocyclic groups or the like; R2 is CONH2 or CONHNH2; one of R3 and R4 is —(L2)-(acidic group) wherein L2 is a group connecting with an acid group and the length of the connecting groups 1 to 5 atoms, and the other is a hydrogen atom; its prodrug, their pharmaceutically acceptable salt, or solvate thereof.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: January 6, 2004
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji, Tetsuo Okada, Makoto Adachi, Tomoyuki Ogawa
  • Patent number: 6472389
    Abstract: The present invention provides a compound having sPLA2 inhibiting activity. The compound represented by the formula (I): wherein R1 is —(L1)—R6 wherein L1 is a divalent linking group of 1 to 18 atoms or the like, and R6 is a carbocyclic ring substituted by at least one non-interfering substituent or the like; R2 is C1 to C3 alkyl or the like; R3 is —(L2)-(acidic group); R4 and R5 are hydrogen atoms, non-interfering substituents, carbocyclic groups or the like; X is independently oxygen atom of sulfur atom; and RA is —C(═X)—C(═X)—NH2 or the like; the prodrugs thereof, their pharmaceutically acceptable salts, or their solvates, and a composition for inhibiting sPLA2 containing them as effective ingredients.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: October 29, 2002
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji, Yoshikazu Fukui, Makoto Adachi
  • Patent number: 6407104
    Abstract: wherein R1 is —(L1)—R6 wherein L1 is a divalent linking group of 1 to 18 atoms or the like, and R6 is a carbocyclic ring substituted by at least one non-interfering substituent or the like; R2 is C1 to C3 alkyl, C3 to C4 cycloalkyl or the like group; R3 is —(L2)-(acidic group); R4 and R5 are hydrogen atoms, non-interfering substituents, carbocyclic groups or the like; RA is —C(═X)—C(═X)—NH2 or the like; and X is independently oxygen atom or sulfur atom; the prodrugs thereof, their pharmaceutically acceptable salts, or their solvates, and a composition for inhibiting sPLA2 containing them as effective ingredients.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: June 18, 2002
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji, Tetsuo Okada
  • Patent number: 5981778
    Abstract: A method of producing an ether-type thio-phospholipid of the formula (I): ##STR1## wherein: n is an integer of 13 to 17;A is C.sub.14 -C.sub.20 acyl group;G is a group selected from the group consisting of: ##STR2## which is useful as synthetic substrate of cytosolic phospholipase A.sub.2 inhibitors, said method being applicable to mass production of the compound (I), intermediates therefor and the preparation of the same are provided.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: November 9, 1999
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji
  • Patent number: 5760270
    Abstract: A method of producing an ether-type thio-phospholipid of the formula (I): ##STR1## wherein: n is an integer of 13 to 17;A is C.sub.14 -C.sub.20 acyl group;G is a group selected from the group consisting of: ##STR2## which is useful as synthetic substrate of cytosolic phospholipase A.sub.2 inhibitors, said method being applicable to mass production of the compound (I), intermediates therefor and the preparation of the same are provided.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: June 2, 1998
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji
  • Patent number: 5663405
    Abstract: A method of producing an ether-type thio-phospholipid of the formula (I): ##STR1## wherein: n is an integer of 13 to 17;A is C.sub.14 -C.sub.20 acyl group;G is a group selected from the group consisting of: ##STR2## which is useful as synthetic substrate of cytosolic phospholipase A.sub.2 inhibitors, said method being applicable to mass production of the compound (I), intermediates therefor and the preparation of the same are provided.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: September 2, 1997
    Assignee: Shionogi & Co., Ltd.
    Inventors: Mitsuaki Ohtani, Masahiro Fuji