Patents by Inventor Takashi Tsuruoka

Takashi Tsuruoka 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: 6583144
    Abstract: Disclosed are compounds represented by formula (I) and pharmaceutically acceptable salts and solvates thereof. The compounds can inhibit the biosynthesis of triglycerides in the liver and can inhibit the secretion of lipoprotein containing apolipoprotein B from the liver. Therefore, they are useful for the prevention or treatment of hyperlipidemia (particularly hyper-very-low-density-lipoproteinemia) and arteriosclerotic diseases, such as cardiac infarction, or pancreatitis induced by hyperlipidemia.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: June 24, 2003
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Naoto Ohkura, Takashi Tsuruoka, Takayuki Usui, Yukiko Hiraiwa, Tetsuya Matsushima, Masaharu Shiotani, Tetsutaro Niizato, Yuuko Nakatani, Shigeki Suzuki, Chidsuko Kuroda, Kiyoaki Katano
  • Publication number: 20020156276
    Abstract: Disclosed are compounds represented by formula (I) and pharmaceutically acceptable salts and solvates thereof. The compounds can inhibit the biosynthesis of triglycerides in the liver and can inhibit the secretion of lipoprotein containing apolipoprotein B from the liver. Therefore, they are useful for the prevention or treatment of hyperlipidemia (particularly hyper-very-low-density-lipoproteinemia) and arteriosclerotic diseases, such as cardiac infarction, or pancreatitis induced by hyperlipidemia.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 24, 2002
    Inventors: Naoto Ohkura, Takashi Tsuruoka, Takayuki Usui, Yukiko Hiraiwa, Tetsuya Matsushima, Masaharu Shiotani, Tetsutaro Niizato, Yuuko Nakatani, Shigeki Suzuki, Chidsuko Kuroda, Kiyoaki Katano
  • Patent number: 6417362
    Abstract: Disclosed are compounds represented by formula (I) and pharmaceutically acceptable salts and solvates thereof. The compounds can inhibit the biosynthesis of triglycerides in the liver and can inhibit the secretion of lipoprotein containing apolipoprotein B from the liver. Therefore, they are useful for the prevention or treatment of hyperlipidemia (particularly hyper-very-low-density-lipoproteinemia) and arteriosclerotic diseases, such as cardiac infarction, or pancreatitis induced by hyperlipidemia.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: July 9, 2002
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Naoto Ohkura, Takashi Tsuruoka, Takayuki Usui, Yukiko Hiraiwa, Tetsuya Matsushima, Masaharu Shiotani, Tetsutaro Niizato, Yuuko Nakatani, Shigeki Suzuki, Chidsuko Kuroda, Kiyoaki Katano
  • Patent number: 5840895
    Abstract: Compounds of formulae (II), (III), (IV) and (V) or salts thereof are intermediates for pharmacologically active tricyclic benzazepine and benzothiazepine derivatives, ##STR1## wherein R represents hydrogen, alkyl, phenylalkyl, or a protective group of a triazole ring, R.sup.1 -R.sup.5 represent hydrogen, alkyl, alkenyl, alkoxy, amino, oxim or hydroxyl, and R.sup.41 represents hydrogen, C.sub.1-6 alkyl which may be optionally substituted, or a protective group for a carboxyl group.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: November 24, 1998
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Yasuo Ohtsuka, Takashi Shishikura, Hiroko Ogino, Kenichi Fushihara, Mami Kawaguchi, Seiji Tsutsumi, Megumi Imai, Keiko Shito, Koji Tsuchiya, Junko Tanaka, Takako Iwasaki, Shigeru Hoshiko, Takashi Tsuruoka
  • Patent number: 5698692
    Abstract: A compound represented by the general formula (I) and a pharmaceutically acceptable salt and solvate thereof having an effect for inhibiting the agglutination of platelets is disclosed: ##STR1## wherein R.sup.1 represents a group --W--(CH.sub.2).sub.i --COOR.sup.3,R.sup.2 represents a hydrogen atom or a group --W--(CH.sub.2).sub.i --COOR.sup.3 or --OR.sup.4,X represents --CH.dbd. or --N.dbd.,Y represents(i) a group --(CO).sub.k --N(R.sup.5)--Z--, wherein Z represents a bond or a group --(CH.sub.2).sub.m --CO-- or a group --(CH.sub.2).sub.m --CHR.sup.6 --,(ii) a group --(CH.sub.2).sub.m --N(R.sup.5)--(CO).sub.k --, or(iii) a group --(CO).sub.k --Het, wherein Het represents a five- or six-membered heterocyclic ring comprising a nitrogen atom,A represents(i) the following groups (II), (III) or (IV) ##STR2## B represents a bond, C.sub.1-6 alkylene or C.sub.2-6 alkenylen.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: December 16, 1997
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Kiyoaki Katano, Shokichi Ohuchi, Eiki Shitara, Masaro Shimizu, Kazue Yaegashi, Tomoaki Miura, Yasuko Isomura, Hiroyuki Iida, Midori Ishikawa, Kenji Asai, Emiko Hatsushiba, Mami Kawaguchi, Takashi Tsuruoka
  • Patent number: 5686442
    Abstract: The tricyclic benzazepine and benzothiazepine derivatives represented by the formula (I) and pharmacologically acceptable salts thereof are disclosed. ##STR1## wherein Z represents CO, --CR.sup.6 R.sup.7 -- or --S(O).sub.n, R represents hydrogen, alkyl, phenylalkyl, or a protective group of a triazole ring, R.sup.1 -R.sup.5 represent hydrogen, alkyl, alkenyl, alkoxy, amino, oxim or hydroxyl. These compounds have anti-allergic effect and are useful for the treatment and prophylaxis of allergic diseases.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: November 11, 1997
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Yasuo Ohtsuka, Takashi Shishikura, Hiroko Ogino, Kenichi Fushihara, Mami Kawaguchi, Seiji Tsutsumi, Megumi Imai, Keiko Shito, Koji Tsuchiya, Junko Tanaka, Takako Iwasaki, Shigeru Hoshiko, Takashi Tsuruoka
  • Patent number: 5594004
    Abstract: A compound represented by the general formula (I) and a pharmaceutically acceptable salt and solvate thereof having an effect for inhibiting the agglutination of platelets is disclosed: ##STR1## wherein R.sup.1 represents a group --W--(CH.sub.2).sub.i --COOR.sup.3,R.sup.2 represents a hydrogen atom or a group --W--(CH.sub.2).sub.i --COOR.sup.3 or --OR.sup.4,X represents --CH.dbd. or --N.dbd.,Y represents(i) a group --(CO).sub.k --N(R.sup.5)--Z--, wherein Z represents a bond or a group --(CH.sub.2).sub.m --CO-- or a group --(CH.sub.2).sub.m --CHR.sup.6 --,(ii) a group --(CH.sub.2).sub.m --N(R.sup.5)--(CO).sub.k --, or(iii) a group --(CO).sub.k -Het, wherein Het represents a five- or six-membered heterocyclic ring comprising a nitrogen atom,A represents(i) the following groups (III) or (IV) ##STR2## B represents a bond, C.sub.1-6 alkylene or C.sub.2-6 alkenylen.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: January 14, 1997
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Kiyoaki Katano, Shokichi Ohuchi, Eiki Shitara, Masaro Shimizu, Kazue Yaegashi, Tomoaki Miura, Yasuko Isomura, Hiroyuki Iida, Midori Ishikawa, Kenji Asai, Emiko Hatsushiba, Mami Kawaguchi, Takashi Tsuruoka
  • Patent number: 5399566
    Abstract: The invention provides compounds represented by the following formula (I) ##STR1## or a pharmaceutically acceptable salts thereof wherein A represents ##STR2## B represents a carboxy or tetrazolyl group; and X represents --O--, --NH-- or --S(O).sub.t --.The compounds possess angiotensin II antagonism, and may be used as an antihypertensive agent, a therapeutic agent to congestive heart failure, an antianxiety agent and a cognitive enhancing agent.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: March 21, 1995
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Kiyoaki Katano, Hiroko Ogino, Eiki Shitara, Hiromi Watanabe, Jun Nagura, Naomi Osada, Yasuyuki Ichimaru, Fukio Konno, Tomoya Machinami, Takashi Tsuruoka
  • Patent number: 5294629
    Abstract: A novel benzothiazole or benzimidazole derivative represented by formula (I) ##STR1## wherein X represents a sulfur atom or a NH group; R.sup.1 represents a hydrogen atom, a lower alkoxy group, a chlorine atom, a bromine atom or an iodine atom; R.sup.2 represents a hydrogen atom a substituted or unsubstituted lower alkyl group, a vinyl group, an aryl group or an acyl group; m is an integer of 1, 2 or 3; and n is an integer of 0, 1 or 2, which shows an excellent acid secretion suppressing effect and gastric mucosa protecting effect, and an antiulcer agent containing the same as an active ingredient.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: March 15, 1994
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Tomoya Machinami, Kazue Yasufuku, Seiji Shibahara, Fumiya Hirano, Yasukatsu Yuda, Motohiro Nishio, Yuji Matsuhashi, Takashi Tsuruoka, Kiyoaki Katano, Shigeharu Inoye
  • Patent number: 5250545
    Abstract: Sugar lactams such as N-(3-phenylpropyl)-1-deoxynojirimycin, 1-deoxynojirimycin, D-glucaro-.delta.-lactam, 6-O-triphenylmethyl-D-gluco-.delta.-lactam, etc., and new derivatives thereof which inhibit metastasis of cancer cells.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: October 5, 1993
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Tsutomu Tsuruoka, Satoru Nakabayashi, Harumi Fukuyasu, Yuuko Ishii, Takashi Tsuruoka, Haruo Yamamoto, Shigeharu Inouye, Shinichi Kondo
  • Patent number: 5200407
    Abstract: Compounds of the general formula (I): ##STR1## and pharmaceutically acceptable salts thereof, in which A, B, C and D each represent --CH.dbd. or --N.dbd., with the proviso that at least one of them is --N.dbd.;X represents --NH--, --O-- or --S--;Y represents --(CH.sub.2).sub.p -- wherein p is an integer from 0 to 4, --C(CH.sub.3).sub.2 --, --CH.sub.2 CH.dbd.CH--, --CH.sub.2 CO--, --CF.sub.2 -- or --CH.sub.2 COCH.sub.2 --;R.sup.1 represents a hydrogen atom, a C.sub.1-4 alkyl group, a halogen atom or a C.sub.1-4 alkoxy group;R.sup.2 represents a hydrogen atom, a hydroxyl group, a saturated or unsaturated C.sub.1-6 alkyl group, a C.sub.1-6 alkoxy group, a carboxyl group, a saturated or unsaturated C.sub.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: April 6, 1993
    Assignee: Meiji Seika Kaburhiki Kaisha
    Inventors: Kiyoaki Katano, Tamako Tomomoto, Hiroko Ogino, Naoki Yamazaki, Fumiya Hirano, Yasukatsu Yuda, Fukio Konno, Motohiro Nishio, Tomoya Machinami, Seiji Shibahara, Takashi Tsuruoka, Shigeharu Inouye
  • Patent number: 5185347
    Abstract: A piperidine compound represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group having from 1 to 4 carbon atoms, a lower alkoxy group having from 1 to 4 carbon atoms, a hydroxymethyl group, --CO.sub.2 R.sup.3, or ##STR2## wherein R.sup.3 represents a hydrogen atom or a lower alkyl group having from 1 to 4 carbon atoms; R.sup.4 represents a hydroxyl group, a lower alkoxy group having from 1 to 4 carbon atoms or --NR.sup.6 R.sup.7 (wherein R.sup.6 and R.sup.7, which may be the same or different, each represent a hydrogen atom or a lower alkyl group having from 1 to 4 carbon atoms); and R.sup.5 represents a hydrogen atom, a lower alkanoyl group having from 1 to 4 carbon atoms, or a chlorobenzoyl group; R.sup.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: February 9, 1993
    Assignee: Meiji Seika Kaisha Ltd.
    Inventors: Kiyoaki Katano, Tamako Tomomoto, Hiroko Ogino, Fumiya Hirano, Yasukatsu Yuda, Fukio Konno, Tomoya Machinami, Takashi Tsuruoka, Shigeharu Inoye
  • Patent number: 5141946
    Abstract: Compounds of the general formula (I): ##STR1## and pharmaceutically acceptable salts thereof, in whichA, B, C and D each represent --CH.dbd. or --N.dbd., with the proviso that at least one of them is --N.dbd.;X represents --NH--, --O-- or --S--;Y represents --(CH.sub.2).sub.p -- wherein p is an integer from 0 to 4, --C(CH.sub.3).sub.2 --, --CH.sub.2 CH.dbd.CH--, --CH.sub.2 CO--, --CF.sub.2 -- or --CH.sub.2 COCH.sub.2 --;R.sup.1 represents a hydrogen atom, a C.sub.1-4 alkyl group, a halogen atom or a C.sub.1-4 alkoxy group;R.sup.2 represnts a hydrogen atom, a hydroxyl group, a saturated or unsaturated C.sub.1-6 alkyl group, a C.sub.1-6 alkoxy group, a carboxyl group, a saturated or unsaturated C.sub.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: August 25, 1992
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Kiyoaki Katano, Tamako Tomomoto, Hiroko Ogino, Naoki Yamazaki, Fumiya Hirano, Yasukatsu Yuda, Fukio Konno, Motohiro Nishio, Tomoya Machinami, Seiji Shibahara, Takashi Tsuruoka, Shigeharu Inouye
  • Patent number: 5079255
    Abstract: Compounds of the general formula (I): ##STR1## and pharmaceutically acceptable salts thereof, in which A, B, C and D each represent --CH.dbd. or --N.dbd., with the proviso that at least one of them is --N.dbd.;X represents --NH--, --O-- or --S--;Y represents --(CH.sub.2).sub.p -- wherein p is an integer from 0 to 4, --C(CH.sub.3).sub.2 --, --CH.sub.2 CH.dbd.CH--, --CH.sub.2 CO--, --CF.sub.2 -- or --CH.sub.2 COCH.sub.2 --;R.sup.1 represents a hydrogen atom, a C.sub.1-4 alkyl group, a halogen atom or a C.sub.1-4 alkoxy group;R.sup.2 represents a hydrogen atom, a hydroxyl group, a saturated or unsaturated C.sub.1-6 alkyl group, a C.sub.1-6 alkoxy group, a carboxyl group, a saturated or unsaturated C.sub.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: January 7, 1992
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Kiyoaki Katano, Tamako Tomomoto, Hiroko Ogino, Yamazaki Naoki, Fumiya Hirano, Yasukatsu Yuda, Fukio Konno, Motohiro Nishio, Tomoya Machinami, Seiji Shibahara, Takashi Tsuruoka, Shigeharu Inouye
  • Patent number: 5028601
    Abstract: Cephalosporin compounds of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and are a hydrogen atom or a lower alkyl group of 1-5 carbon atoms and A is a hydrogen atom or a nucleophilic compound residue or pharmacologically acceptable salts thereof have excellent antibacterial activity against Gram positive and Gram negative microorganisms.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: July 2, 1991
    Assignees: Meiji Saika Kaisha, Ltd., Zaidanhojin Biseibutsu Kagaku Kenkyukai
    Inventors: Shinichi Kondo, Takashi Tsuruoka, Katsuyoshi Iwamatsu, Kiyoaki Katano, Satoru Nakabayashi, Hiroko Ogino, Takashi Yoshida, Masaji Sezaki
  • Patent number: 4985445
    Abstract: Sugar lactams such as N-(3-phenylpropyl)-1-deoxynojirimycin, 1-deoxynojirimycin, D-glucaro-.delta.-lactam, 6-O-triphenylmethyl-D-gluco-.delta.-lactam, etc. and new derivatives thereof which markedly inhibit metastasis of cancer cells.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: January 15, 1991
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Tsutomu Tsuruoka, Satoru Nakabayashi, Harumi Fukuyasu, Yuuko Ishii, Takashi Tsuruoka, Haruo Yamamoto, Shigeharu Inouye, Shinichi Kondo
  • Patent number: 4971961
    Abstract: This invention provides cephalosporin compounds represented by the following general formula: ##STR1## wherein R.sup.1 and R.sup.2 are same or different hydrogen atom or a lower alkyl group of 1 to 5 carbon atoms; R.sup.3 is a lower alkyl group which may optionally be substituted with a halogen atome (or atoms), an alkenyl group, or a cycloalkylmethyl group of 3 to 6 carbon atoms; and A is hydrogen atom or residue of a nucleophilic compound and pharmacologically acceptable salts thereof. These compounds have broad-spectrum antibacterial activity against Gram-positive and -negative bacteria including Pseudomonas aeruginosa, as well as against a great variety of .beta.-lactamase-producing strains.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: November 20, 1990
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Kaysuyoshi Iwamatsu, Kenji Sakagami, Kunio Atsumi, Takashi Yoshida, Seiji Shibahara, Takashi Tsuruoka, Shinichi Kondo
  • Patent number: 4785090
    Abstract: This is a class of antibacterial compounds of the formula: ##STR1## wherein Y is straight or branched alkyl or alkenyl chain, cycloalkanomethyl of 3-6 carbon atoms, each group being optionally substituted by halogen, or a group ##STR2## wherein n is 0 or an integer of 1-3, A is a group --COR.sup.3 wherein R.sup.3 is hydroxy, a group ##STR3## wherein R.sup.4 and R.sup.5, which may be the same or different, are hydrogen or alkyl of 1-5 carbon atoms, a group ##STR4## or a 5- or 6-membered heterocyclic group containing nitrogen and/or sulfur, and R.sup.1 and R.sup.2, which may be the same or different, are hydrogen, alkyl of 1-5 carbon atoms, or R.sup.1 and R.sup.2 may be combined together to form cycloalkylidene of 3-5 carbon atoms, and Z is a group of the formula: ##STR5## wherein m is 0 or an integer of 3-5, R.sup.6 is hydrogen or alkyl of 1-3 carbon atoms, and R.sup.7, when m is an integer of 3-5, is alkyl of 1-5 carbon atoms, alkenyl, cyclopropyl, a group --(CH.sub.2).sub.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: November 15, 1988
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Takashi Tsuruoka, Seiji Shibahara, Katsuyoshi Iwamatsu, Tsuneo Okonogi, Satoru Nakabayashi, Yasushi Murai, Hiroko Ogino, Kiyoaki Katano, Takashi Yoshida, Shigeharu Inoue, Shunzo Fukatsu, Shinichi Kondo
  • Patent number: 4758557
    Abstract: Cephalosporin compounds represented by the following formula (I) and pharmaceutically acceptable salts thereof have a broad bactericidal spectrum against various pathogenic bacteria including Psuedomonas aeruginosa and are useful as bactericidal remedies for pathogenic diseases of human and animals: ##STR1## wherein A represents an unsubstituted or substituted pyridylthio group of a formula (I-1); ##STR2## or an unsubstituted or substituted pyridiniumthio group of a formula (I-2): ##STR3## or an unsubstituted or substituted pyridinium group of a formula (I-3); ##STR4## or a 5- or 6-membered heterocyclicthio or bicycloheterocyclicthio group of a formula (I-4):--S--Het (I-4).
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: July 19, 1988
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Takashi Tsuruoka, Katsuyoshi Iwamatsu, Kiyoaki Katano, Hiroko Ogino, Ryoichi Okamoto, Takashi Yoshida, Masaji Sezaki, Fumio Kai, Shigeharu Inoue, Shinichi Kondo
  • Patent number: 4647572
    Abstract: Triiodoallyl- or iodopropargyl-substituted tetrazole compounds which are prepared by reacting substituted tetrazole compound with reactive derivatives of corresponding triiodoallyl alcohol or iodopropargyl alcohol or by iodinating propargyltetrazole compounds, as well as antibacterial and antifungal compositions for medicinal, agricultural and industrial fields which contain as active ingredient said tetrazole compounds.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: March 3, 1987
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Shigeharu Inouye, Masao Koyama, Keinosuke Miyauchi, Takashi Tsuruoka, Fumio Kai, Kuniomi Matsumoto, Taro Niida, Eiichi Akita