Patents by Inventor Shozo Yamada
Shozo Yamada 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: 8889699Abstract: The present invention provides a novel antimetabolic anticancer agent that has an excellent balance between antitumor effect and toxicity. Specifically, the present invention provides a medicament containing, as an active ingredient, a 5-fluorouracil derivative represented by Formula (I) or a salt thereof: wherein R1 represents a hydrogen atom or a protecting group of a hydroxy group, R2 represents a lower alkoxy-lower alkyl group or a tetrahydrofuranyl group, X represents a carbon atom or a nitrogen atom, and Y represents a halogen atom or a cyano group.Type: GrantFiled: March 14, 2012Date of Patent: November 18, 2014Assignee: Delta-Fly Pharma, Inc.Inventors: Masakazu Fukushima, Shozo Yamada, Ryo Oyama
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Patent number: 8654785Abstract: Provided is a subscriber-side communication device including a subscriber-side processing unit that continuously performs signal processing regardless of computer restart and includes a transmission processing unit that performs a data transmission process according to transmission control information contained in a received signal from the office-side communication device.Type: GrantFiled: December 16, 2010Date of Patent: February 18, 2014Assignees: OF Networks Co., Ltd., Oki Electric Industry Co., Ltd., Fujikura Ltd.Inventors: Satoshi Furusawa, Akihiro Takahashi, Yasuyuki Kuroda, Shozo Yamada
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Publication number: 20120232103Abstract: The present invention provides a novel antimetabolic anticancer agent that has an excellent balance between antitumor effect and toxicity. Specifically, the present invention provides a medicament containing, as an active ingredient, a 5-fluorouracil derivative represented by Formula (I) or a salt thereof: wherein R1 represents a hydrogen atom or a protecting group of a hydroxy group, R2 represents a lower alkoxy-lower alkyl group or a tetrahydrofuranyl group, X represents a carbon atom or a nitrogen atom, and Y represents a halogen atom or a cyano group.Type: ApplicationFiled: March 14, 2012Publication date: September 13, 2012Inventors: Masakazu FUKUSHIMA, Shozo Yamada, Ryo Oyama
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Publication number: 20110150482Abstract: Provided is a subscriber-side communication device including a subscriber-side processing unit that continuously performs signal processing regardless of computer restart and includes a transmission processing unit that performs a data transmission process according to transmission control information contained in a received signal from the office-side communication device.Type: ApplicationFiled: December 16, 2010Publication date: June 23, 2011Applicants: OF Networks Co., Ltd., OKI ELECTRIC INDUSTRY CO., LTD., Fujikura Ltd.Inventors: Satoshi Furusawa, Akihiro Takahashi, Yasuyuki Kuroda, Shozo Yamada
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Patent number: 6818764Abstract: 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: GrantFiled: June 3, 2003Date of Patent: November 16, 2004Assignees: Taiho Pharmaceutical Co., Ltd., Sosei Co., Ltd.Inventors: Shozo Yamada, Kazuhiko Shigeno, Kazuhiro Kitagawa, Shigeo Okajima, Tetsuji Asao
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Publication number: 20040049029Abstract: 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: ApplicationFiled: June 3, 2003Publication date: March 11, 2004Inventors: Shozo Yamada, Kazuhiko Shigeno, Kazuhiro Kitagawa, Shigeo Okajima, Tetsuji Asao
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Patent number: 6248768Abstract: 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: GrantFiled: July 7, 1999Date of Patent: June 19, 2001Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Shozo Yamada, Toshiyuki Hosoya, Kazuhiro Kitagawa, Shin-ichi Inoue, Mamoru Kiniwa, Tetsuji Asao
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Patent number: 6110967Abstract: 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: GrantFiled: December 17, 1998Date of Patent: August 29, 2000Assignee: Taiho Pharmaceuticals Co., Ltd.Inventors: Tetsuji Asao, Tomohiro Yamashita, Yoshimitsu Suda, Shigeo Okajima, Yukio Tada, Nobuhiko Katsunuma, Shozo Yamada, Kazuhiko Shigeno, Atsuhiko Uemura
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Patent number: 5786355Abstract: Described are a 4,6-diarylpyrimidine derivative represented by the following formula (1): ##STR1## wherein R represents a heterocyclic ring which may be substituted by one to four lower alkyl groups or an amino group and Ar represents a phenyl, naphthyl or aromatic heterocyclic group which may have one to four substituents, and a salt thereof; a preparation process therefor; and a pharmaceutical containing it as an effective ingredient. It has excellent neovascular inhibitory action and is useful as a therapeutic agent for solid cancer, rheumatism, diabetic retinopathy or psoriasis.Type: GrantFiled: November 27, 1996Date of Patent: July 28, 1998Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Yasuo Konno, Kenji Nozaki, Shozo Yamada, Tetsuji Asao, Takashi Suzuki, Masayasu Kimura
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Patent number: 5728841Abstract: This invention is to provide a process for preparing 1-amino-1,2,3-triazole represented by formula (III): ##STR1## comprising cyclizing glyoxal bishydrazone represented by formula (I): ##STR2## by reaction with an aqueous hydrogen peroxide solution in the presence of a catalytic amount of a transition metal oxide represented by formula (II):M.sub.m O.sub.nwherein M represents a transition metal atom; and m and n, which may be the same or different, each represent an integer of 1 to 5.Type: GrantFiled: April 30, 1996Date of Patent: March 17, 1998Assignee: Taiho Pharmaceutical Co., Ltd.Inventors: Kazuhiko Shigeno, Tomoyasu Ono, Motoaki Tanaka, Shozo Yamada, Tetsuji Asao
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Patent number: 5401739Abstract: A benzothiadiazine derivative, hydrate thereof and acid addition salt thereof, the derivative being represented by the general formula (I) ##STR1## wherein X is methylene or a nitrogen atom substituted with a lower alkyl, Y and Z are each methylene or carbonyl, A is phenylene or phenylene substituted with methoxycarbonyl, R.sub.4 is lower alkylene or lower alkenylene, R.sub.1 is a hydrogen atom, acetoxyacetyl, cyclohexylmethyl or benzyl wherein the benzene ring may be substituted with lower alkoxyl, halogen atom, nitro, lower alkyl, methylenedioxy or hydroxyl, R.sub.2 is lower alkyl or phenyl, and R.sub.3 is a hydrogen atom, halogen atom or lower alkoxyl with the exception of the case where X, Y and Z are each methylene, A is unsubstituted phenylene, R.sub.4 is lower alkylene and R.sub.1 is a hydrogen atom; and a peptic ulcer treating agent containing as an effective component the above derivative, hydrate thereof or acid addition salt thereof.Type: GrantFiled: November 23, 1993Date of Patent: March 28, 1995Assignee: Taiho Pharmaceutical Co. Ltd.Inventors: Tomoyasu Ohno, Shingo Yano, Kosuke Fujiwara, Hirofusa Ajioka, Noriyuki Yamamoto, Shozo Yamada, Makoto Kajitani
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Patent number: 4933444Abstract: Disclosed is a process for preparing 2.beta.-substituted-methylpenicillin derivative of the formula ##STR1## wherein R is H or carboxyl protecting group, R.sub.1 is H or halo, R.sub.2 is H, lower alkyl, lower alkoxy, halogen, azido, lower alkylthio, phthalimide or a group --NHR.sub.3 (wherein R.sub.3 is H or acyl), and --N Y is an optionally substituted monocyclic or bicyclic heterocyclic group having 1 to 4 nitrogen atoms in the ring structure, the process comprising reacting a compound of the formula ##STR2## wherein X is Cl or Br, and R, R.sub.1 and R.sub.2 are as defined above with a heterocyclic compound of the formula ##STR3## wherein --N Y is as defined above.Type: GrantFiled: June 26, 1989Date of Patent: June 12, 1990Assignees: Taiho Pharmaceutical Co., Ltd., Otsuka Kagaku Kabushiki KaishaInventors: Sigeru Torii, Hideo Tanaka, Motoaki Tanaka, Shozo Yamada, Akira Nakai, Hisashi Ohbayashi
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Patent number: 4898939Abstract: A process for preparing a 2.beta.-substituted-methylpenicillin compound of the formula ##STR1## wherein --N Y is an optionally substituted heterocyclic group containing 2 to 4 nitrogen atoms as the hetero atom in the ring structure, and R.sub.1 is a penicillin carboxyl protecting group, the process comprising reacting an azetidinonedisulfide compound of the formula ##STR2## wherein R.sub.1 is as defined above and R is a substituted or unsubstituted heterocyclic group with a nitrogen-containing heterocyclic compound of the formula ##STR3## wherein ##STR4## is as defined above in the presence of a metal compound.Type: GrantFiled: February 28, 1989Date of Patent: February 6, 1990Assignees: Taiho Pharmaceutical Co., Ltd., Otsuka Kagaku Kabushiki KaishaInventors: Sigeru Torii, Hideo Tanaka, Motoaki Tanaka, Shozo Yamada, Akira Nakai
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Patent number: 4895941Abstract: 2.alpha.-Methyl-2.beta.-(1,2,3-triazol-1-yl)methylpenam-3.alpha.-carboxylic acid derivatives are prepared by reacting a penicillanic acid sulfoxide derivative of the formula ##STR1## wherein R is a penicillin carboxyl protecting group, and R.sub.1 is hydrogen or halogen, R.sub.2 is hydrogen, lower alkyl or the like with a triazole derivative of the formula ##STR2## wherein R.sub.3 and R.sub.4 are hydrogen, trialkylsilyl, lower alkyl, lower alkoxy or the like and R.sub.5 is hydrogen or silyl substituted with 3 groups selected from the class consisting of lower alkyl, benzyl and phenyl in a solvent.Type: GrantFiled: February 28, 1989Date of Patent: January 23, 1990Assignees: Taiho Pharmaceutical Co., Ltd., Otsuka Kagaku Kabushiki KaishaInventors: Sigeru Torii, Hideo Tanaka, Motoaki Tanaka, Shozo Yamada, Akira Nakai
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Patent number: 4891369Abstract: Disclosed are 2.beta.-substituted-methylpenicillanic acid compounds of the formula ##STR1## wherein n is 0, 1 or 2; and ##STR2## is monocyclic or bicyclic heterocyclic ring group which has 2 to 4 nitrogen atoms as hetero atom in its ring structure and which may be optionally substituted with alkyl, alkoxycarbonyl, phenyl, formyl or benzyloxycarbonyl optionally having alkyl, nitro or a halogen atom on the benzene ring, with the proviso that said heterocyclic ring group is not 1,2,3-triazol-1-yl; or salts or esters thereof.These compounds are useful as .beta.-lactamase inhibitor.Type: GrantFiled: November 23, 1987Date of Patent: January 2, 1990Assignee: Taiho Pharmaceutical Company, LimitedInventors: Sigeru Torii, Hideo Tanaka, Motoaki Tanaka, Shozo Yamada, Akira Nakai, Hisashi Ohbayashi, Tomoyasu Ohno
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Patent number: 4861768Abstract: Disclosed is a penicillin derivative of the formula: ##STR1## wherein n is an integer of 0, 1 or 2; Y is a cyano group, a lower acyl group, a mono- or di-lower alkylthiocarbamoyl group, ##STR2## wherein R.sub.1 is a hydrogen atom, a lower alkyl group, a phenyl group, a group --(CH.sub.2).sub.m --OR.sub.2 or --(CH.sub.2).sub.m COOR.sub.2 (m is an integer of 1 to 6 and R.sub.2 is a hydrogen atom or a penicillin carboxyl ester-forming group which is commonly used for penicillin derivatives) or a phenyl group substituted by at least one member selected from the class consisting of lower alkyl group, halogen atom and lower alkoxy group; and R is a hydrogen atom or a penicillin carboxyl ester-forming group, or a salt thereof. They are useful as .beta.-lactamase inhibitors.Type: GrantFiled: February 18, 1987Date of Patent: August 29, 1989Assignee: Taiho Pharmaceutical Company, LimitedInventors: Sigeru Torii, Hideo Tanaka, Motoaki Tanaka, Shozo Yamada, Akira Nakai, Hisashi Ohbayashi
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Patent number: 4518712Abstract: An analgesic composition containing as active ingredient a piperazine derivative represented by the general formula (1) ##STR1## wherein R.sub.1 represents a cyclopropylmethyl group, an isopropyl group or an allyl group and R.sub.2 represents a phenyl group having as substituent a halogen atom or a trifluoromethyl group.Type: GrantFiled: June 22, 1981Date of Patent: May 21, 1985Assignee: Taiho Pharmaceutical Company LimitedInventors: Hajime Fujimura, Yasuzo Hiramatsu, Tomio Yamazaki, Shozo Yamada, Takaji Honna
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Patent number: 4482740Abstract: A compound having the general formula ##STR1## wherein R.sub.1 is ethyl or allyl; andR.sub.2 is alkyl having 1-4 carbon atoms;and a metal salt of the compound defined herein above.The compound is useful as herbicides.Type: GrantFiled: December 27, 1982Date of Patent: November 13, 1984Assignee: Nippon Soda Company LimitedInventors: Isao Iwataki, Akira Nakayama, Minoru Kaeriyama, Hisao Ishikawa, Hideo Hosaka, Kenichi Kohara, Shozo Yamada
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Patent number: 4259105Abstract: Compounds of the general formula ##STR1## wherein X is trifluoromethyl or halogen,R.sub.1 is hydrogen, lower alkyl, lower alkenyl or benzyl,R.sub.2 is lower alkyl,R.sub.3 is hydrogen, alkyl or alkali metal,Y is oxygen or sulfur, andn is 0, 1 or 2;are useful as herbicides.Type: GrantFiled: April 26, 1979Date of Patent: March 31, 1981Assignee: Nippon Soda Company, Ltd.Inventors: Kuniyasu Maeda, Minoru Kaeriyama, Nobuo Matsui, Hisao Ishikawa, Shozo Yamada, Susumu Okunuki
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Patent number: D474391Type: GrantFiled: March 6, 2002Date of Patent: May 13, 2003Inventors: Stephen J. Padden, Shozo Yamada