Patents by Inventor Yoshimitsu Suda

Yoshimitsu Suda 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: 20230107889
    Abstract: The present invention relates to a process for producing 4-(2-fluoro-4-(3-(2-phenylacetyl)thioureido)phenoxy)-7-methoxy-N-methylquinoline-6-carboxamide, including: coupling 4-(4-amino-2-fluorophenoxy)-7-methoxy-N-methylquinoline-6-carboxamide to 2-phenylacetyl isothiocyanate.
    Type: Application
    Filed: February 12, 2021
    Publication date: April 6, 2023
    Applicant: TAIHO PHARMACEUTICAL CO., LTD.
    Inventor: Yoshimitsu SUDA
  • Patent number: 8304427
    Abstract: Provided is a c-Met inhibitory antitumor agent which mitigates side effects by selectively affecting tumor cells in which c-Met is specifically expressed, having a formula (I) or its salt: wherein each of R1 and R2 are independently a hydrogen atom, an optionally substituted C1-6 alkyl, C3-10 cycloalkyl, C6-14 aromatic hydrocarbon, or saturated or unsaturated heterocyclic group, or R1 and R2 may form, together with the nitrogen atom to which they are attached, an optionally substituted nitrogen-containing heterocyclic ring; R3 is a C1-6 alkyl group; and R4, R5, and R6, are independently a hydrogen atom, a halogen atom, an optionally substituted C1-6 alkyl group, a C1-6 alkoxy group, a C1-6 alkylamino group, an optionally substituted aromatic hydrocarbon group, or an optionally substituted saturated or unsaturated heterocyclic group, or R5 and R6 may form a ring together with the phenyl ring to which they are attached.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: November 6, 2012
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Yoshimitsu Suda, Kosuke Egami, Hidenori Fujita
  • Publication number: 20110034439
    Abstract: To provide an antitumor agent which exhibits excellent c-Met inhibitory effect and mitigates side effects by virtue of selectively affecting to tumor cells in which c-Met is specifically expressed.
    Type: Application
    Filed: April 9, 2009
    Publication date: February 10, 2011
    Applicant: Taiho Pharmaceutical Co., Ltd.
    Inventors: Yoshimitsu Suda, Kosuke Egami, Hidenori Fujita
  • Patent number: 7855300
    Abstract: The present invention provides a compound that exhibits an excellent antitumor effect and reduces side effects, such as skin disorders, of the existing retinoid by selectively activating on the nuclear receptor RAR?, thereby possibly producing significant improvement of clinical profits. Specifically, the present invention provides a bis(trimethylsilyl)phenyl compound represented by Formula (I): wherein X is N or CH; Y is O or S; R1, R2, and R3 are the same or different and are hydrogen or lower alkyl; R4 and R5 are the same or different and are hydrogen, lower alkyl, or halogen; and a bond between a carbon atom to which R1 is attached and a carbon atom to which R2 is attached is a single bond or a double bond; or a salt thereof.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: December 21, 2010
    Assignee: Taiho Pharmaceutical Co., Ltd.
    Inventors: Yoshimitsu Suda, Hiromi Oshiumi, Koji Murakami
  • Publication number: 20100210591
    Abstract: The present invention provides a compound that exhibits an excellent antitumor effect and reduces side effects, such as skin disorders, of the existing retinoid by selectively activating on the nuclear receptor RAR?, thereby possibly producing significant improvement of clinical profits. Specifically, the present invention provides a bis(trimethylsilyl)phenyl compound represented by Formula (I): wherein X is N or CH; Y is O or S; R1, R2, and R3 are the same or different and are hydrogen or lower alkyl; R4 and R5 are the same or different and are hydrogen, lower alkyl, or halogen; and a bond between a carbon atom to which R1 is attached and a carbon atom to which R2 is attached is a single bond or a double bond; or a salt thereof.
    Type: Application
    Filed: October 10, 2008
    Publication date: August 19, 2010
    Applicant: Taiho Pharmaceutical Co., Ltd.
    Inventors: Yoshimitsu Suda, Hiromi Oshiumi, Koji Murakami
  • 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
  • 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
  • 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
  • Patent number: 6359551
    Abstract: An indication device of the present invention includes a case body provided to a movable portion during in use by a both-sided adhesive tape or a fitting; luminous body provided with the case body and emits a light or a blinking light by using electric current generated in a power source; a first ON/OFF switch with an optical sensor interposed between the power source and luminous body, and a second ON/OFF switch turning on automatically during use. Therefore, the indication device can allow the others to become aware of person's whereabouts by emitting light or blinking light when in use. The device can be turned off automatically to prevent dissipation of power.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: March 19, 2002
    Inventor: Yoshimitsu Suda
  • 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: 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