Patents by Inventor Makio Kitazawa
Makio Kitazawa 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).
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Patent number: 7230031Abstract: The present invention provides a compound represented by general formula (I): or pharmaceutically acceptable salts thereof, wherein W is O, S(O)m, CH2 and the like; R1 is halogen, lower alkyl, halo-lower alkyl, CN and the like; R3 is hydrogen and the like; R4 is hydrogen, halogen, alkyl, halo-lower alkyl, substituted alkyl, aryl, aralkyl, alkoxy, substituted alkoxy, alkanoyl, aroyl, —CONR7(R8), —S(O)mR9, —SO2NR7(R8) and the like; R5 is hydrogen, halogen, alkyl, substituted alkyl and the like; A is —N(R6)CO—A1—COR10 and the like; pharmaceutical compositions containing them and their uses, which have a high affinity to human thyroid hormone receptors, in particular human thyroid hormone receptor ?.Type: GrantFiled: January 28, 2003Date of Patent: June 12, 2007Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Hiroaki Shiohara, Tetsuya Nakamura, Norihiko Kikuchi, Tomonaga Ozawa, Makio Kitazawa
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Publication number: 20050085541Abstract: The present invention provides a compound represented by general formula (I): or pharmaceutically acceptable salts thereof, wherein W is O, S(O)m, CH2 and the like; R1 is halogen, lower alkyl, halo-lower alkyl, CN and the like; R3 is hydrogen and the like; R4 is hydrogen, halogen, alkyl, halo-lower alkyl, substituted alkyl, aryl, aralkyl, alkoxy, substituted alkoxy, alkanoyl, aroyl, —CONR7(R8), —S(O)mR9, —SO2NR7(R8) and the like; R5 is hydrogen, halogen, alkyl, substituted alkyl and the like; A is —N(R6)CO-A1-COR10 and the like; pharmaceutical compositions containing them and their uses, which have a high affinity to human thyroid hormone receptors, in particular human thyroid hormone receptor ?.Type: ApplicationFiled: January 28, 2003Publication date: April 21, 2005Inventors: Hiroaki Shiohara, Tetsuya Nakamura, Norihiko Kikuchi, Tomonaga Ozawa, Makio Kitazawa
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Publication number: 20040235932Abstract: A pharmaceutical composition excellent for treatment or prevention of a glaucoma or an ocular hypertension, which inhibits the development of drug resistance, and which can be administered for a longer period of time is provided.Type: ApplicationFiled: June 10, 2004Publication date: November 25, 2004Inventors: Kenji Yamazaki, Ichiro Hirotsu, Hiroshi Miyata, Makio Kitazawa
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Patent number: 6310086Abstract: The present invention relates to indole derivatives represented by the general formula: (wherein R represents an ethyl group or a 2,2,2-trifluoroethyl group; Y represents a hydroxy group or a pivaloyloxy group; and the carbon atom marked with (R) represents a carbon atom in (R) configuration) and pharmaceutically acceptable salts thereof, which have potent and prolonged reducing effects on intraocular pressure and are useful as agents for lowering intraocular pressure.Type: GrantFiled: October 23, 2000Date of Patent: October 30, 2001Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Toshiaki Yamaguchi, Hiroshi Miyata, Yukiyoshi Ajisawa
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Patent number: 6303655Abstract: The present invention relates to an agent for the prevention or treatment of diseases associated with excessive proliferation of retinal pigment epithelial cells such as proliferative vitreoretinopathy comprising as the active ingredient N-(3,4-dimethoxycinnamoyl)anthranilic acid represented by the formula: or a pharmaceutically acceptable salt thereof, which has an inhibitory activity on proliferation of retinal pigment epithelial cells.Type: GrantFiled: October 18, 1999Date of Patent: October 16, 2001Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Yasuo Takehana, Makio Kitazawa
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Patent number: 6136852Abstract: The present invention relates to 3,4-disubstituted phenylethanolaminotetralincarboxylic acid derivatives represented by the general formula: ##STR1## [wherein Q represents a vinylene group or a group represented by the general formula:-A-(CH.sub.2).sub.m --(wherein A represents an oxygen atom or a methylene group; and m is an integer of from 1 to 6); R represents a hydrogen atom or a lower alkyl group; n is an integer of 1 or 2; the carbon atom marked with * represents a carbon atom in R configuration, S configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in S configuration] and pharmaceutically acceptable salts thereof, which have a selective .beta..sub.2 -adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator and an agent for pain remission and promoting stone removal in urolithiasis.Type: GrantFiled: March 8, 1999Date of Patent: October 24, 2000Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Kosuke Okazaki, Tetsuro Tamai, Masaru Saito, Nobuyuki Tanaka, Hiroaki Kobayashi, Ken Kikuchi, Hideyuki Muranaka
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Patent number: 6133266Abstract: The present invention relates to 3,4-disubstituted phenylethanolaminotetralincarboxamide derivatives represented by the general formula: ##STR1## (wherein A represents a lower alkylene group; B represents an amino group, a di(lower alkyl)amino group or a 3 to 7-membered alicyclic amino group which may contain an oxygen atom in the ring; n is an integer of 1 or 2; the carbon atom marked with * represents a carbon atom in R configuration, S configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in S configuration) and pharmaceutically acceptable salts thereof, which have a selective .beta..sub.2 -adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator and an agent for pain remission and stone removal in urolithiasis.Type: GrantFiled: February 10, 1999Date of Patent: October 17, 2000Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Kosuke Okazaki, Tetsuro Tamai, Masaru Saito, Nobuyuki Tanaka, Hiroaki Kobayashi, Ken Kikuchi, Hideyuki Muranaka
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Patent number: 6046192Abstract: The present invention relates to a phenylethanolaminotetralincarboxamide derivative represented by the general formula: ##STR1## (wherein A represents a lower alkylene group; B represents an amino group, a di(lower alkyl)amino group or a 3 to 7-membered alicyclic amino group which may contain an oxygen atom in the ring; the carbon atom marked with * represents a carbon atom in (R) configuration, (S) configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in (S) configuration) and a pharmaceutically acceptable salt thereof, which have a selective .beta..sub.2 -adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator, and an agent for pain remission and promoting stone removal in urolithiasis.Type: GrantFiled: March 8, 1999Date of Patent: April 4, 2000Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Kosuke Okazaki, Tetsuro Tamai, Masaru Saito, Nobuyuki Tanaka, Hiroaki Kobayashi, Ken Kikuchi, Hideyuki Muranaka
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Patent number: 5387603Abstract: Indoline compounds represented by the formula: ##STR1## wherein R represents a saturated or unsaturated aliphatic acyl group which may have one or more halogen atoms, a hydroxy group, a lower alkoxy group, a carboxy group, a lower alkoxycarbonyl group, a cycloalkyl group or an aryl group as substituents; a hydroxyalkyl group; an aliphatic acyloxyalkyl group; a lower alkyl group having a lower alkoxy group, a carboxy group, a lower alkoxycarbonyl group, an aryl substituted lower alkoxycarbonyl group, a carbamoyl group, a mono- or dialkyl substituted carbamoyl group or a cyano group as substituents; an aromatic acyl group which may have one or more halogen atoms as substituents; a furoyl group or a pyridylcarbonyl group; R.sup.Type: GrantFiled: December 1, 1993Date of Patent: February 7, 1995Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Masaaki Ban, Kosuke Okazaki, Motoyasu Ozawa, Toshikazu Yazaki, Ryoichi Yamagishi
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Patent number: 5177069Abstract: The present invention provides a novel class of naphthylsulfonylalkanoic acid compounds such as a structure corrresponding to the formula: ##STR1## or a pharmaceutically acceptable salt thereof. A present invention naphthylsulfonylalkanoic acid compound is useful for prevention or treatment of irritable bowel syndrome, biliary dyskinesia and acute pancreatitis.Type: GrantFiled: December 6, 1990Date of Patent: January 5, 1993Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Masuo Akahane, Yasushi Nakano, Atsushi Tsubaki, Kazuaki Sato, Masaaki Ban, Michihiro Kobayashi
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Patent number: 5145869Abstract: The present invention provides a novel class of phenylsulfonylalkanoic acid compounds such as a structure corresponding to the formula: ##STR1## or a pharmaceutically acceptable salt thereof. A present invention phenylsulfonylalkanoic acid compound is useful for prevention or treatment of irritable bowel syndrome, biliary dyskinesia and acute pancreatitis.Type: GrantFiled: April 11, 1991Date of Patent: September 8, 1992Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Makio Kitazawa, Masuo Akahane, Yasushi Nakano, Atsushi Tsubaki, Kazuaki Sato, Masaaki Ban, Michihiro Kobayashi
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Patent number: 4780477Abstract: This invention provides novel isatin compounds which are useful as therapeutic agents. The invention isatin compounds and the pharmaceutically acceptable salts thereof exhibit anti-ulcer activities which are applicable for propylaxis and treatment of ulcer diseases in the digestive tract of animals.Type: GrantFiled: May 29, 1986Date of Patent: October 25, 1988Assignee: Kissei Pharmaceutical Co., Ltd.Inventors: Michihiro Kobayashi, Makio Kitazawa, Masuo Akahane, Tsutomu Tsukamoto, Ryoji Yamamoto, Yasushi Nakano