Patents by Inventor Shun-ichi Ikeda

Shun-ichi Ikeda 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: 20100016250
    Abstract: The present invention provides TLR9 agonists comprising, as an active ingredient, a compound represented by formula (I): (wherein a represents 0 or 1; n represents an integer of 0 to 2; m represents an integer of 0 to 5; X1 and X2 each independently represent a hydrogen atom or hydroxy; Y represents an oxygen atom or a sulfur atom; -Q1-represents —O— or the like; -Q2- represents —O— or the like; -Z- represents —O— or the like; R1, R3 and R4 each independently represent hydroxy or the like; R2 and R5 each independently represent a hydrogen atom, hydroxy or the like; and A represents 6-aminopurin-9-yl or the like) or a pharmaceutically acceptable salt thereof, and the like.
    Type: Application
    Filed: April 13, 2007
    Publication date: January 21, 2010
    Applicant: KYOWA HAKKO KIRIN CO., LTD.
    Inventors: Hiroyuki Nagata, Michio Ichimura, Rieko Nakatsu, Shun-Ichi Ikeda, Ayako Kawabata, Toshio Ota, Masayuki Abe, Michio Takashima, Makoto Suzuki
  • Publication number: 20060217368
    Abstract: An object of the present invention is to provide a nerve regenerating drug, an agent for the promotion of neuropoiesis of a neural stem cell, a neuron obtained by culturing a neural stem cell in the presence of the agent for the promotion of neuropoiesis, and a method of the manufacture of the neuron. In order to achieve the object, the invention provides a nerve regenerating drug comprising a substance that inhibits the activity of glycogen synthase kinase-3, as an active ingredient; an agent for the promotion of neuropoiesis of a neural stem cell comprising the substance as an active ingredient; a neuron obtained by culturing a neural stem cell in the presence of the agent for the promotion of neuropoiesis; and a method of the manufacture of the neuron.
    Type: Application
    Filed: April 16, 2004
    Publication date: September 28, 2006
    Applicant: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tsuyoshi Morishita, Kazuhiro Sakurada, Keiko Suzuki, Shun-ichi Ikeda
  • Patent number: 6869971
    Abstract: UCS 1025 derivatives having antitumor activity or antibacterial activity which are represented by formula (I): wherein R1 represents hydrogen, lower alkyl, etc.; R2 represents hydrogen, or is combined with R3 to represent a bond, etc., or is combined with R4 to represent —O(C?O)—, etc.; R3 represents hydrogen, etc., or is combined with R2 to represent a bond, etc.; R4 represents hydrogen, etc., or is combined with R2 to represent —(C?O)O—, etc.; R5 represents hydrogen or is combined with R6 to represent a bond; R6 represents hydrogen, etc., or is combined with R5 to represent a bond; R7 represents hydrogen or is combined with R8 to represent ?O; R8 represents hydroxy or is combined with R7 to represent ?O; ---- represents a single bond or a double bond, and a represents a single bond (two carbon atoms to which a is bound are combined to form a single bond) or an oxygen atom, or pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: March 22, 2005
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tsutomu Akama, Akira Asai, Tsutomu Agatsuma, Shinji Nara, Yoshinori Yamashita, Tamio Mizukami, Shun-ichi Ikeda, Yutaka Saitoh, Yutaka Kanda
  • Patent number: 6815449
    Abstract: Compounds having immunosuppressive activity, cell growth inhibitory activity, anti-tumor activity, etc. are represented by formula I: and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: November 9, 2004
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tsutomu Akama, Hiroyuki Nagata, Atsuhiro Hasegawa, Harumi Ue, Isami Takahashi, Yutaka Saitoh, Kenichi Mochida, Shun-ichi Ikeda, Yutaka Kanda
  • Publication number: 20030199560
    Abstract: A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof:
    Type: Application
    Filed: January 15, 2003
    Publication date: October 23, 2003
    Applicant: KYOWA HAKKO KOGYO CO., LTD.
    Inventors: Yoshiyuki Yonetani, Takeshi Takahashi, Yuko Kanda, Tamio Mizukami, Tatsuya Tamaoki, Shun-ichi Ikeda, Masanobu Takashima, Naoki Asanuma, Tadashi Inaba, Hiroshi Takeuchi, Hiroshi Kawamoto, Yoshihisa Tsukada, Masato Satomura, Hiroshi Kitaguchi
  • Publication number: 20030181722
    Abstract: Compounds having immunosuppressive activity, cell growth inhibitory activity, anti-tumor activity, etc.
    Type: Application
    Filed: November 7, 2002
    Publication date: September 25, 2003
    Applicant: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tsutomu Akama, Hiroyuki Nagata, Atsuhiro Hasegawa, Harumi Ue, Isami Takahashi, Yutaka Saitoh, Kenichi Mochida, Shun-Ichi Ikeda, Yutaka Kanda
  • Patent number: 6613774
    Abstract: LK6-A derivatives which have immmunosuppressive activity, cell growth inhibitory activity, anti-tumor activity, etc. and which are represented by general formula (I): as defined herein, and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: September 2, 2003
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tsutomu Akama, Hiroyuki Nagata, Atsuhiro Hasegawa, Harumi Ue, Isami Takahashi, Yutaka Saitoh, Kenichi Mochida, Shun-ichi Ikeda, Yutaka Kanda
  • Patent number: 6608061
    Abstract: A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof: Ar1—S—R1—S—Ar2 wherein R1 represents a nonmetal bridging group; Ar1 and Ar2 independently represent a group selected from the group consisting of an aryl group which has, on its ring, one to three hydroxyl groups optionally substituted with a monovalent group and said aryl group may have one to three substituents other than hydroxyl group on its ring; and a heteroaryl group which has, on its ring, one to three hydroxyl groups optionally substituted with a monovalent group, and said heteroaryl group may have one to three substituents other than hydroxyl group on its ring.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: August 19, 2003
    Assignees: Kyoma Hakko Kogyo Co., Ltd., Fuji Photo Film Co., Ltd.
    Inventors: Yoshiyuki Yonetani, Takeshi Takahashi, Yuko Kanda, Tamio Mizukami, Tatsuya Tamaoki, Shun-ichi Ikeda, Masanobu Takashima, Naoki Asanuma, Tadashi Inaba, Hiroshi Takeuchi, Hiroshi Kawamoto, Yoshihisa Tsukada, Masato Satomura, Hiroshi Kitaguchi
  • Patent number: 6548536
    Abstract: Agents for inducing apoptosis comprising a tetrocarcin derivative represented by the following formula (I) or a salt thereof as an active ingredient (---- represents a single bond or a double bond; j and k represent 0 or 1; R1 to R3, R7 to R10 and R14 represent a hydrogen atom, a lower alkyl group and the like; R4, R11, R12, R13 and R15 to R18 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like; R5 and R6 represents a hydrogen atom, a hydroxyl group, a lower alkyl group, a group represented by the following formula (B) (R32 represents a formyl group and the like, R33 to R35 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like); R19 represents a hydroxyl group, a lower alkoxyl group, a lower alkanoyloxy group and the like). The agents are useful as medicaments for preventive and/or therapeutic treatment of diseases resulting from increased expression of Bcl-2 family proteins, for example, cancers, AIDS and the like.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: April 15, 2003
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Mitsunobu Hara, Takayuki Nakashima, Yutaka Kanda, Masami Hamano, Shun-ichi Ikeda, Yuko Uosaki, Yoko Takata, Junji Kanazawa
  • Publication number: 20030018070
    Abstract: A medicament for treatment of cancer comprising a compound represented by the following general formula (I) or a physiologically acceptable salt thereof:
    Type: Application
    Filed: February 14, 2000
    Publication date: January 23, 2003
    Inventors: YOSHIYUKI YONETANI, TAKESHI TAKAHASHI, YUKO KANDA, TAMIO MIZUKAMI, TATSUYA TAMAOKI, SHUN-ICHI IKEDA, MASANOBU TAKASHIMA, NAOKI ASANUMA, TADASHI INABA, HIROSHI TAKEUCHI, HIROSHI KAWAMOTO, YOSHIHISA TSUKADA, MASATO SATOMURA, HIROSHI KITAGUCHI
  • Publication number: 20020022598
    Abstract: Agents for inducing apoptosis comprising a tetrocarcin derivative represented by the following formula (I) or a salt thereof as an active ingredient (- - - - represents a single bond or a double bond; j and k represent 0 or 1; R1 to R3, R7 to R10 and R14 represent a hydrogen atom, a lower alkyl group and the like; R4, R11, R12, R13 and R15 to R18 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like; R5 and R6 represents a hydrogen atom, a hydroxyl group, a lower alkyl group, a group represented by the following formula (B) (R32 represents a formyl group and the like, R33 to R35 represent a hydrogen atom, a hydroxyl group, a lower alkyl group and the like); R19 represents a hydroxyl group, a lower alkoxyl group, a lower alkanoyloxy group and the like). The agents are useful as medicaments for preventive and/or therapeutic treatment of diseases resulting from increased expression of Bcl-2 family proteins, for example, cancers, AIDS and the like.
    Type: Application
    Filed: February 27, 2001
    Publication date: February 21, 2002
    Applicant: KYOWA HAKKO KOGYO CO., LTD
    Inventors: Mitsunobu Hara, Takayuki Nakashima, Yutaka Kanda, Masami Hamano, Shun-ichi Ikeda, Yuko Uosaki, Yoko Takata, Junji Kanazawa
  • Patent number: 6080771
    Abstract: DC107 derivatives represented by formula (I) or pharmaceutically acceptable salts thereof which have antimicrobial activity and antitumor activity are provided: ##STR1## wherein R.sup.1 represents CO(CR.sup.4A R.sup.4B).sub.n1 (O(CH.sub.2).sub.p1).sub.n2 OR.sup.5 {wherein n1 represents an integer of 1 or 2; R.sup.4A and R.sup.4B are the same or different, and each represents hydrogen or lower alkyl; p1 and n2 each represents an integer of 1 to 10; and R.sup.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: June 27, 2000
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Kanda, Hitoshi Arai, Hiroyuki Yamaguchi, Tadashi Ashizawa, Shun-ichi Ikeda, Chikara Murakata, Tatsuya Tamaoki
  • Patent number: 5981558
    Abstract: DC107 derivatives represented by formula (I) or pharmaceutically acceptable salts thereof which have antimicrobial activity and antitumor activity are provided: ##STR1## wherein R.sup.1 represents hydrogen, lower alkoxyalkyl, aralkyloxyalkyl, lower alkoxyalkoxyalkyl, lower alkoxyalkoxyalkoxyalkyl, aralkyl, tetrahydropyranyl, COR.sup.4, or the like; R.sup.2 represents hydrogen or COR.sup.6 ; R.sup.3 represents --CH.sub.2 OCOR.sup.7, phthalimidomethyl, or the like; and W represents oxygen or NR.sup.8 (wherein R.sup.8 represents hydroxy, lower alkoxy, lower alkenyloxy, aralkyloxy, substituted or unsubstituted arylsulfonylamino, or lower alkoxycarbonylamino).
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: November 9, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Yutaka Kanda, Hiroyuki Yamaguchi, Tadashi Ashizawa, Chikara Murakata, Shun-ichi Ikeda, Tatsuya Tamaoki
  • Patent number: 5952355
    Abstract: The present invention relates to propenone derivatives represented by the following formula (I): ##STR1## wherein R.sup.1 represents hydrogen, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, or YR.sup.5 (wherein Y represents S or O; and R.sup.5 represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or a substituted or unsubstituted cyclic ether residue); R.sup.2 and R.sup.3 independently represent hydrogen, lower alkyl, or substituted or unsubstituted aralkyl, or alternatively R.sup.2 and R.sup.3 are combined to form substituted or unsubstituted methylene or ethylene; R.sup.4 represents hydrogen, hydroxy, lower alkyl, substituted or unsubstituted aralkyl, lower alkoxy, substituted or unsubstituted aralkyloxy, or halogen; and X represents substituted or unsubstituted indolyl; or pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: September 14, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Shun-Ichi Ikeda, Uichiro Kimura, Tadashi Ashizawa, Katsushige Gomi, Hiromitsu Saito, Masaji Kasai, Junji Kanazawa, Kimihito Sasaki, Etsuko Nukui, Masami Okabe, Soichiro Sato
  • Patent number: 5539112
    Abstract: 5-Aminoflavone derivatives represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different and represent hydrogen, substituted or unsubstituted lower alkyl, lower alkenyl, halogen-substituted or unsubstituted lower alkanoyl or lower alkoxycarbonyl, X.sup.1, X.sup.2, Y.sup.1 and Y.sup.2 are the same or different and represent hydrogen, halogen or lower alkyl, at least one of X.sup.1 and X.sup.2 represents halogen or lower alkyl, X.sup.3 represents hydrogen, substituted or unsubstituted lower alkyl, lower alkenyl, lower alkynyl, halogen, hydroxy, substituted or unsubstituted lower alkoxy, NR.sup.5 R.sup.6 (wherein R.sup.5 and R.sup.6 are the same or different and represent hydrogen, or substituted or unsubstituted lower alkyl, or R.sup.5 and R.sup.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: July 23, 1996
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tsutomu Akama, Shun-ichi Ikeda, Yasushi Shida, Masaji Kasai, Hiroyuki Ishida, Uichiro Kimura, Katsushige Gomi, Hiromitsu Saito, Kimihisa Ueno
  • Patent number: 4649213
    Abstract: Compounds having anti-inflammatory and analgesic activity of the formula ##STR1## are produced from compounds having the formula ##STR2## by rearrangement in the presence of a base or an amide and (1) X S O X.sup.1 or X S O.sub.2 X.sup.1 where X and X.sup.1 are halogen or trifluoromethyl or (2) sulfur dioxide and halogen.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: March 10, 1987
    Assignee: Kyowa Hakko Kogyo Co. Ltd.
    Inventors: Takayoshi Yamauchi, Kaneaki Hattori, Shun-ichi Ikeda, Kenji Nakao, Kentaro Tamaki