Patents by Inventor Tetsuji Asao

Tetsuji Asao 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: 7902260
    Abstract: A medicament for preventive and/or therapeutic treatment of a lower urinary tract symptom caused by a lower urinary tract disorder, which comprises as an active ingredient a retinoid such as, for example, 4-[(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2 -naphthalenyl)carbamoyl]benzoic acid.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Kemphys Ltd.
    Inventors: Koichi Shudo, Tetsuji Asao, Miwako Ishido
  • Publication number: 20080207768
    Abstract: A medicament for preventive and/or therapeutic treatment of a lower urinary tract symptom caused by a lower urinary tract disorder, which comprises as an active ingredient a retinoid such as, for example, 4-[(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)carbamoyl]benzoic acid
    Type: Application
    Filed: March 29, 2007
    Publication date: August 28, 2008
    Applicant: R&R INC.
    Inventors: Koichi SHUDO, Tetsuji ASAO, Miwako ISHIDO
  • Patent number: 7067476
    Abstract: The present invention provides a peptide derivative of formula (I) or a pharmaceutically acceptable salt thereof wherein X is —CH(OH)— or —CO—; R1 is hydrogen or an amino protecting group; R2 is hydroxyl or lower alkoxy; one of R3 and R4 is the side chain (R group) of lysine the amino group of which may be protected with a protecting group and the other of R3 and R4 is the side chain (R group) of arginine the guanidino group of which may be protected with a protecting group; and R5 and R6 may be the same or different and are hydrogen, lower alkyl or aralkyl. The present invention further provides a production process and use thereof.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: June 27, 2006
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Kenji Yamamoto, Yoshimitsu Suda, Tetsuji Asao
  • Patent number: 6951843
    Abstract: The present invention provides a peptide derivative of formula (I) wherein X is —CHOH— or —CO—; R1 and R2 are hydrogen or substituted oxycarbonyl; R3 is substituted oxycarbonyl; R4 is hydroxyl, lower alkoxy, optionally substituted piperazinyl or the like; R5 is a R-group side chain of an ?-amino acid optionally protected by a protective group, R6 is hydroxyl, lower alkoxy or the like; m is 0 or 1; and n is an integer of 2 to 6; or a pharmaceutically acceptable salt thereof. The present invention further provides a production process and use thereof.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: October 4, 2005
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Kenji Yamamoto, Yoshimitsu Suda, Tetsuji Asao
  • Patent number: 6818764
    Abstract: A method of manufacturing substance GM-95 having general formula [I], comprising (a) deprotecting a macrocyclic compound having general formula [II] (wherein, R1's are the same or different and each represents a lower alkyl group, and R2 represents a thiol protecting group) by removing acetal protecting groups (the R1's) thereof, and forming an oxazole ring through an intramolecular cyclization reaction between produced formyl group and an amide group, and (b) deprotecting a resulting macrocyclic compound having general formula [III] (wherein, R2 is as mentioned above) by removing the thiol protecting group (R2) thereof, and forming a thiazoline ring through an intramolecular cyclization reaction between a thiol group thus produced and an amide group.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: November 16, 2004
    Assignees: Taiho Pharmaceutical Co., Ltd., Sosei Co., Ltd.
    Inventors: Shozo Yamada, Kazuhiko Shigeno, Kazuhiro Kitagawa, Shigeo Okajima, Tetsuji Asao
  • Publication number: 20040214780
    Abstract: The present invention provides a peptide derivative of formula (I) or a pharmaceutically acceptable salt thereof 1
    Type: Application
    Filed: April 29, 2004
    Publication date: October 28, 2004
    Inventors: Kenji Yamamoto, Yoshimitsu Suda, Tetsuji Asao
  • Patent number: 6717002
    Abstract: A method of producing 3-alkoxy-1,3,5(10)-triene-6-one-steroid derivatives having, in the steroid skeleton thereof, a partial structure of A- and B-rings represented by formula (2): (wherein R represents an alkyl group, a cycloalkyl group, an alkenyl group, or an aralkyl group), including reacting a 19-norsteroid derivative having, in the steroid skeleton thereof, a partial structure of A- and B-rings represented by formula (1): with an alcohol represented by ROH (wherein R has the same meaning as defined above) and iodine in the absence of a rare earth compound catalyst. According to the method of the present invention, 3-alkoxy-1,3,5(10)-triene-6-one-steroids can be selectively produced from 19-norsteroides through a single reaction step without employment of a special catalyst.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: April 6, 2004
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Shingo Yano, Ryutaro Yamagami, Kenji Nozaki, Tetsuji Asao
  • Publication number: 20040049029
    Abstract: A method of manufacturing substance GM-95 having general formula [I], comprising (a) deprotecting a macrocyclic compound having general formula [II] (wherein, R1's are the same or different and each represents a lower alkyl group, and R2 represents a thiol protecting group) by removing acetal protecting groups (the R1's) thereof, and forming an oxazole ring through an intramolecular cyclization reaction between produced formyl group and an amide group, and (b) deprotecting a resulting macrocyclic compound having general formula [III] (wherein, R2 is as mentioned above) by removing the thiol protecting group (R2) thereof, and forming a thiazoline ring through an intramolecular cyclization reaction between a thiol group thus produced and an amide group.
    Type: Application
    Filed: June 3, 2003
    Publication date: March 11, 2004
    Inventors: Shozo Yamada, Kazuhiko Shigeno, Kazuhiro Kitagawa, Shigeo Okajima, Tetsuji Asao
  • Publication number: 20030087828
    Abstract: The present invention provides a peptide derivative of formula (I) 1
    Type: Application
    Filed: July 2, 2002
    Publication date: May 8, 2003
    Inventors: Kenji Yamamoto, Yoshimitsu Suda, Tetsuji Asao
  • Publication number: 20020143199
    Abstract: A method of producing 3-alkoxy-1,3,5(10)-triene-6-one-steroid derivatives having, in the steroid skeleton thereof, a partial structure of A- and B-rings represented by formula (2): 1
    Type: Application
    Filed: October 18, 2001
    Publication date: October 3, 2002
    Inventors: Shingo Yano, Ryutaro Yamagami, Kenji Nozaki, Tetsuji Asao
  • Patent number: 6300331
    Abstract: The present invention relates to a naphthalimidobenzamide derivative represented by the following formula (1): (wherein, R1 represents a hydrogen atom, etc., Y represents a hydrogen atom or —CON(R4)—A2—X2, R2 and R4 are the same or different and each independently represents a hydrogen atom, etc., A1 and A2 are the same or different and each independently represents an alkylene group which may be interrupted at least once by —N(R3)— (R3 representing a hydrogen atom, etc.) and X1 and X2 are the same or different and each independently represents a (hetero)aryl group which may have a substituent, etc.) or salt thereof; and a pharmaceutical comprising it as an effective ingredient. The compound is useful as an antitumor agent and the like.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: October 9, 2001
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Kazuharu Noguchi, Motoji Wakida, Kenji Suzuki, Yuji Yamada, Tetsuji Asao
  • Patent number: 6294535
    Abstract: The invention relates to novel uracil derivatives having excellent inhibiting effects on human derived thymidine phosphorylates and anti-tumor activity. The pharmaceutical compositions, anti-tumor potentiators and antitumor agents containing such novel compounds, and a process for their preparation and use are described.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: September 25, 2001
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Shingo Yano, Yukio Tada, Hideki Kazuno, Tsutomu Sato, Junichi Yamashita, Norihiko Suzuki, Tomohiro Emura, Masakazu Fukushima, Tetsuji Asao
  • Patent number: 6248768
    Abstract: This invention provides a compound having both IL-4 production inhibitory activity and PDE (IV) inhibitory activity, represented by formula (I): and a pharmaceutical composition or a therapeutic agent for acute and chronic inflammatory diseases and an anti-allergic or anti-inflammatory agent, each of which comprising an effective amount of the compound and a pharmacological carrier. It also provides use of the compound of formula (I) for the production of the aforementioned pharmaceutical composition or therapeutic agent for acute and chronic inflammatory diseases and anti-allergic or anti-inflammatory agent, and a method for treating acute and chronic inflammatory diseases.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: June 19, 2001
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Shozo Yamada, Toshiyuki Hosoya, Kazuhiro Kitagawa, Shin-ichi Inoue, Mamoru Kiniwa, Tetsuji Asao
  • Patent number: 6159969
    Abstract: The invention relates to novel uracil derivatives having excellent inhibiting effects of human derived thymidine phosphorylase and anti-tumor activity. The pharmaceutical compositions, anti-tumor potentiators, antitumor agents containing such novel compounds, and a process for their preparation and use is described.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: December 12, 2000
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Shingo Yano, Yukio Tada, Hideki Kazuno, Tsutomu Sato, Junichi Yamashita, Norihiko Suzuki, Tomohiro Emura, Masakazu Fukushima, Tetsuji Asao
  • Patent number: 6110967
    Abstract: The invention relates an epoxysuccinamide derivative represented by a formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl or aminoalkyl group, R.sup.2 represents an aminoalkyl group which May be substituted, an aryl group which may be substituted, a heterocyclic group which may be substituted, an aralkyl group which may be substituted, or an alkyl group substituted by a heterocyclic ring which may be substituted, or R.sup.1 and R.sup.2 may form a nitrogen-containing heterocyclic ring, which may be substituted, together with the adjacent nitrogen atoms, and R.sup.3 and R.sup.4 are the same or different from each other and independently represent a hydrogen atom, or an alkyl or aralkyl group, or a salt thereof, a preparation process thereof, and a medicine comprising such a derivative or salt as an active ingredient.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: August 29, 2000
    Assignee: Taiho Pharmaceuticals Co., Ltd.
    Inventors: Tetsuji Asao, Tomohiro Yamashita, Yoshimitsu Suda, Shigeo Okajima, Yukio Tada, Nobuhiko Katsunuma, Shozo Yamada, Kazuhiko Shigeno, Atsuhiko Uemura
  • Patent number: 6028079
    Abstract: A condensed-indan derivative represented by formula (1) and a pharmaceutically acceptable salt thereof: wherein ring A represents an optionally substituted benzene ring or naphthalene ring, or a benzene ring having a lower alkylenedioxy group, ring B represents an optionally substituted benzene ring or a benzene ring having a lower alkylenedioxy group. Y represents --N.dbd.CR-- or --CR.dbd.N--, R represents a --NR.sub.1 R.sub.2 group, an optionally substituted nitrogen-containing heterocyclic group or a --OR.sub.3 group, wherein R.sub.1 and R.sub.2 are the same or different and each is a hydrogen atom; a phenyl group; an optionally substituted nitrogen-containing heterocyclic group; or a lower alkyl group which may be substituted by at least one selected from the group consisting of an optionally substituted amino group, a lower alkoxy group, a phenyl group, a nitrogen-containing heterocyclic group, an amine oxide group substituted by a lower alkyl group or a hydroxyl group(s); R.sub.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: February 22, 2000
    Assignee: Taiho Pharmaceutical Co., Ltd
    Inventors: Shinji Okazaki, Tetsuji Asao, Motoji Wakida, Keisuke Ishida, Masato Washinosu, Teruhiro Utsugi, Yuji Yamada
  • Patent number: 5977130
    Abstract: The present invention is directed to an intimal hypertrophy inhibitor containing as the active ingredient an oxyindole derivative represented by the following formula (I) or a salt thereof: ##STR1## (wherein R.sup.1 represents a hydrogen atom; a phenyl group which may be substituted by a lower alkyl group, a lower alkoxy group, a lower alkylaminoalkoxy group, a hydroxy group, an amino group, a lower alkylamino group, or a halogen atom; or a pyridyl group which may be substituted by a lower alkyl group, a lower alkoxy group, a lower alkylaminoalkoxy group, a hydroxy group, an amino group, a lower alkylamino group, a halogen atom, a lower alkoxycarbonyl group, or a carboxyl group; R.sup.2 represents a phenyl group which may be substituted; or a pyridyl group which may be substituted by a lower alkyl group, a lower alkoxy group, a lower alkylaminoalkoxy group, a hydroxy group, an amino group, a lower alkylamino group, a halogen atom, a lower alkoxycarbonyl group, or a carboxyl group; R.sup.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: November 2, 1999
    Assignee: Taiho Pharmeutical Co., Ltd.
    Inventors: Atsushi Sato, Tetsuji Asao, Yuichi Hagiwara, Makoto Kitade, Yasundo Yamazaki
  • Patent number: 5965600
    Abstract: The present invention is directed to an oxindole derivative represented by formula (1): ##STR1## (wherein R represents a methyl group or a methoxy group), and pharmaceuticals containing the compound. The compound exhibits excellent granulation inhibiting activity while providing minimal liver toxicity and is useful as a pharmaceutical in the prevention and treatment of articular rheumatism, arteriosclerosis, hepatocirrhosis, etc., and also in the prevention and treatment of arthrosis deformans, psoriasis, gout, nephritis, angiitis, inflammatory intestinal diseases (ulcerative colitis, Crohn's disease), bronchitis, and chronic granulomatosis, etc.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: October 12, 1999
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Atsushi Sato, Tetsuji Asao, Yuichi Hagiwara, Makoto Kitade, Yasundo Yamazaki
  • Patent number: 5883121
    Abstract: The invention relates an epoxysuccinamide derivative represented by the general formula (1) ##STR1## wherein R.sup.1 and R.sup.2 are the same or different from each other and independently represent H or an aromatic hydrocarbon group or aralkyl group which may be substituted, or R.sup.1 and R.sup.2 may form a nitrogen-containing heterocyclic ring together with the adjacent nitrogen atoms, R.sup.3 is H or an acyl group, R.sup.4 is H or an aralkyl group, and R.sup.5 is an aromatic hydrocarbon group or aralkyl group which may be substituted, or R.sup.5 may form an amino acid residue, which may be protected, together with the adjacent nitrogen atom, or a salt thereof, and a medicine comprising the derivative as an active ingredient; and this compound has an inhibiting activity against cathepsin, and particularly, specifically inhibits cathepsin L and is hence useful for prevention and treatment of osteopathy such as osteoporosis.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: March 16, 1999
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Tomohiro Yamashita, Yoshimitsu Suda, Yukio Tada, Nobuhiko Katunuma, Tetsuji Asao
  • Patent number: 5880294
    Abstract: The present invention relates to D-pentofuranose derivatives represented by the following formulas (1) through (4): ##STR1## (wherein A represents a chlorobenzoyl group; R.sup.1 represents a hydrogen atom, an aliphatic lower acyl group, a substituted or unsubstituted benzoyl group; each of X and Y represents a lower alkyl group; Z represents an ethynyl group or tri-lower alkyl silylethynyl group; the sugar moiety in formula (1) represents xylose; and the sugar moiety of each of formulas (3) and (4) represents ribose). The present invention also relates to a process for preparing the compound (2) characterized by oxidizing the compound of formula (1) with a hypochlorite in the presence of a catalytic amount of 2,2,6,6-tetramethylpiperidinoxy compound, and these compounds are useful as intermediates in the synthesis of 3'-C-substituted ribonucleoside derivatives having excellent antitumor activities.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: March 9, 1999
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Makoto Nomura, Hideki Kazuno, Tsutomu Sato, Masato Washinosu, Motoaki Tanaka, Akira Matsuda, Tetsuji Asao