Patents by Inventor Shuhei Miyazawa

Shuhei Miyazawa 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: 5998445
    Abstract: Pyridine derivatives useful for preventing or treating peptic ulcers, pharmaceutical preparations and methods of treating peptic ulcers are described.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: December 7, 1999
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Norihiro Ueda, Shuhei Miyazawa, Katsuya Tagami, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Masatoshi Fujimoto, Manabu Murakami, Kiyoshi Oketani, Hideaki Fujisaki, Hisashi Shibata, Tsuneo Wakabayashi
  • Patent number: 5861418
    Abstract: To provide a compound which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio. An aminobenzoic acid derivative represented by the general formula (I) or (II) or a pharmacologically acceptable salt thereof: ##STR1## ?wherein R.sup.1 represents a group represented by the formula: ##STR2## {wherein A represents a group represented by formula --CH.sub.2 --X--CH.sub.2 -- (wherein X represents O, >N--R.sup.6 or>CHR.sup.7 (wherein R.sup.6 represents lower alkyl and R.sup.7 represents hydrogen or lower alkoxy)), etc.; D and E each represents a group represented by formula --(CH.sub.2).sub.3 --, etc., and R.sup.2 represents lower alkyl, etc.}; R.sup.9 represents alkynyl; R.sup.10 represents amino, etc-; R.sup.11 represents halogen; R.sup.12 and R.sup.13 each represent lower alkyl; a is an integer of 1 to 5; and b is an integer of 0 to 5!.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: January 19, 1999
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Yorihisa Hoshino, Hisashi Shibata, Kazuo Hirota, Takaaki Kameyama, Shinya Abe, Takashi Yamanaka
  • Patent number: 5840910
    Abstract: Pyridine derivatives useful for preventing or treating peptic ulcers, pharmaceutical preparations and methods of treating peptic ulcers are disclosed.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: November 24, 1998
    Assignee: Esai Co., Ltd.
    Inventors: Shigeru Souda, Norihiro Ueda, Shuhei Miyazawa, Katsuya Tagami, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Masatoshi Fujimoto, Manabu Murakami, Kiyoshi Oketani, Hideaki Fujisaki, Hisashi Shibata, Tsuneo Wakabayashi
  • Patent number: 5723472
    Abstract: To provide a compound which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio. An aminobenzoic acid derivative represented by the general formula (I) or (II) or a pharmacologically acceptable salt thereof: ##STR1## ?wherein R.sup.1 represents a group represented by the formula: ##STR2## {wherein A represents a group represented by formula --CH.sub.2 --X--CH.sub.2 -- (wherein X represents O, >N--R.sup.6 or >CHR.sup.7 (wherein R.sup.6 represents lower alkyl and R.sup.7 represents hydrogen or lower alkoxy)), etc.; D and E each represents a group represented by formula --(CH.sub.2).sub.3 --, etc., and R.sup.2 represents lower alkyl, etc.}; R.sup.9 represents alkynyl; R.sup.10 represents amino, etc.; R.sup.11 represents halogen; R.sup.12 and R.sup.13 each represent lower alkyl; a is an integer of 1 to 5; and b is an integer of 0 to 5!.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: March 3, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Yorihisa Hoshino, Hisashi Shibata, Kazuo Hirota, Takaaki Kameyama, Shinya Abe, Takashi Yamanaka
  • Patent number: 5708013
    Abstract: A pyridine compound having the formula is disclosed and useful to treat the peptic ulcer. ##STR1## wherein R.sup.1 and R.sup.2 which may be the same or different are each a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogenated lower alkyl group, or a halogen atom, R.sup.3 and R.sup.4 which may be the same or different are each a hydrogen atom or a lower alkyl group, X is a group represented by the formula --S--, a group represented by the formula ##STR2## or a group represented by the formula ##STR3## and n is an integer of 1 to 6, provided that R.sup.3 and R.sup.4 are not simultaneously hydrogen atoms when n is 1.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: January 13, 1998
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Norihiro Ueda, Shuhei Miyazawa, Katsuya Tagami, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Masatoshi Fujimoto, Manabu Murakami, Kiyoshi Oketani, Hideaki Fujisaki, Hisashi Shibata, Tsuneo Wakabayashi
  • Patent number: 5677311
    Abstract: To provide a compound which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio. An aminobenzoic acid derivative represented by the general formula (I) or (II) or a pharmacologically acceptable salt thereof: ##STR1## ?wherein R.sup.1 represents a group represented by the formula: ##STR2## {wherein A represents a group represented by formula --CH.sub.2 --X--CH.sub.2 -- (wherein X represents O, >N--R.sup.6 or >CHR.sup.7 (wherein R.sup.6 represents lower alkyl and R.sup.7 represents hydrogen or lower alkoxy)), etc.; D and E each represents a group represented by formula --(CH.sub.2).sub.3 --, etc., and R.sup.2 represents lower alkyl, etc.}; R.sup.9 represents alkynyl; R.sup.10 represents amino, etc.; R.sup.11 represents halogen; R.sup.12 and R.sup.13 each represent lower alkyl; a is an integer of 1 to 5; and b is an integer of 0 to 5!.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: October 14, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Yorihisa Hoshino, Hisashi Shibata, Kazuo Hirota, Takaaki Kameyama, Shinya Abe, Takashi Yamanaka
  • Patent number: 5658925
    Abstract: To provide a compound which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio. An aminobenzoic acid derivative represented by the general formula (I) or (II) or a pharmacologically acceptable salt thereof: ##STR1## [wherein R.sup.1 represents a group represented by the formula ##STR2## etc., {wherein A represents a group represented by formula --CH.sub.2 --X--CH.sub.2 -- (wherein X represents O, >N--R.sup.6 or >CHR.sup.7 (wherein R.sup.6 represents lower alkyl and R.sup.7 represents hydrogen or lower alkoxy)), etc.; D and E each represents a group represented by formula --(CH.sub.2).sub.3 --, etc., and R.sup.2 represents lower alkyl, etc.}; R.sup.9 represents alkynyl; R.sup.10 represents amino, etc.; R.sup.11 represents halogen; R.sup.12 and R.sup.13 each represent lower alkyl; a is an integer of 1 to 5; and b is an integer of 0 to 5].
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: August 19, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Yorihisa Hoshino, Hisashi Shibata, Kazuo Hirota, Takaaki Kameyama, Shinya Abe, Takashi Yamanaka
  • Patent number: 5631402
    Abstract: An aminobenzoic acid derivative represented by the following general formulas (I), (I-2) or (I-3), or a pharmacologically acceptable salt thereof, which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio and which is efficacious as a drug for patients with gastrointestinal unindentified complaints: ##STR1## wherein R.sup.1 represents a group such as an alkynyl or cyanoalkyl group; R.sup.2 represents a group such as an amino or acylamino group; R.sup.3 represents a halogen atom; X represents --O-- or --NH--; and A represents an oxygen or sulfur atom.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 20, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Shigeki Hibi, Hiroyuki Yoshimura, Takashi Mori, Yorihisa Hoshino, Mitsuo Nagai, Kouichi Kikuchi, Hisashi Shibata, Kazuo Hirota, Takashi Yamanaka, Isao Yamatsu, Masanori Mizuno
  • Patent number: 5599972
    Abstract: An aminobenzoic acid derivative represented by the following general formulas (I), (I-2) or (I-3), or a pharmacologically acceptable salt thereof, which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio and which is efficacious as a drug for patients with gastrointestinal unindentified complaints: ##STR1## wherein R.sup.1 represents a group such as an alkynyl or cyanoalkyl group; R.sup.2 represents a group such as an amino or acylamino group; R.sup.3 represents a halogen atom; X represents --O-- or --NH--; and A represents an oxygen or sulfur atom.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 4, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Shigeki Hibi, Hiroyuki Yoshimura, Takashi Mori, Yorihisa Hoshino, Mitsuo Nagai, Kouichi Kikuchi, Hisashi Shibata, Kazuo Hirota, Takashi Yamanaka, Isao Yamatsu, Masanori Mizuno
  • Patent number: 5578603
    Abstract: An aminobenzoic acid derivative represented by the following formulas (I-2) or (I-3), or a pharmacologically acceptable salt thereof, which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio and which is efficacious as a drug for patients with gastrointestinal unindentified complaints: ##STR1## wherein R.sup.1 represents a group such as an alkynyl or cyanoalkyl group; R.sup.2 represents a group such as an amino or acylamino group; R.sup.3 represents a halogen atom; X represents --O-- or --N--; and A represents an oxygen or sulfur atom.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: November 26, 1996
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Shigeki Hibi, Hiroyuki Yoshimura, Takashi Mori, Yorihisa Hoshino, Mitsuo Nagai, Kouichi Kikuchi, Hisashi Shibata, Kazuo Hirota, Takashi Yamanaka, Isao Yamatsu, Masanori Mizuno
  • Patent number: 5512579
    Abstract: To provide a compound which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio. An aminobenzoic acid derivative represented by the general formula (I) or (II) or a pharmacologically acceptable salt thereof: ##STR1## wherein R.sup.1 represents a group represented by the formula: ##STR2## {wherein A represents a group represented by formula --CH.sub.2 --X--CH.sub.2 -- (wherein X represents O, >N--R.sup.6 or >CHR.sup.7 (wherein R.sup.6 represents lower alkyl and R.sup.7 represents hydrogen or lower alkoxy)), etc.; D and E each represents a group represented by formula --(CH.sub.2).sub.3 --, etc., and R.sup.2 represents lower alkyl. etc.}; R.sup.9 represents alkynyl; R.sup.10 represents amino, etc.; R.sup.11 represents halogen; R.sup.12 and R.sup.13 each represent lower alkyl; a is an integer of 1 to 5; and b is an integer of 0 to 5!.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: April 30, 1996
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Yorohisa Hoshino, Hisashi Shibata, Kazuo Hirota, Takaaki Kameyama, Shinya Abe, Takashi Yamanaka
  • Patent number: 5482937
    Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are useful in the pharmaceutical field, especially in treating allergic diseases. ##STR1## in which R.sup.1 and R.sup.2 are hydrogen or an alkyl, R.sup.3 is hydrogen or a halogen, R.sup.4 is hydrogen or an alkyl, X is --OCO--, and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: January 9, 1996
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5476864
    Abstract: A glycerin derivative having the following formula (I) or (I') and a pharmacologically acceptable salt thereof are useful to treat diseases caused by the platelet activating factor.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: December 19, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Osamu Asano, Naoyuki Shimomura, Tetsuya Kawahara, Shinya Abe, Shuhei Miyazawa, Mitsuaki Miyamoto, Hiroyuki Yoshimura, Koukichi Harada, Junsaku Nagaoka, Tsutomu Kawata, Tsutomu Yoshimura, Hiromasa Suzuki, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5476863
    Abstract: A glycerin derivative having the following formula (I) or (I') and a pharmacologically acceptable salt thereof are useful to treat diseases caused by the platelet activating factor.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: December 19, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Osamu Asano, Naoyuki Shimomura, Tetsuya Kawahara, Shinya Abe, Shuhei Miyazawa, Mitsuaki Miyamoto, Hiroyuki Yoshimura, Koukichi Harada, Junsaku Nagaoka, Tsutomu Kawata, Tsutomu Yoshimura, Hiromasa Suzuki, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5468740
    Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases. ##STR1## in which R.sup.1 and R.sup.2 are hydrogen or an alkyl, R.sup.3 is hydrogen or a halogen, R.sup.4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: November 21, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5438045
    Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases. ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OOO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: August 1, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5409909
    Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to treat allergic diseases: ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: April 25, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Kimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5389643
    Abstract: An aminobenzoic acid derivative represented by the following general formulas (I), (I-2) or (I-3), or a pharmacologically acceptable salt thereof, which exhibits a serotonin antagonism and an acetylcholine release accelerating activity at a well-balanced activity ratio and which is efficacious as a drug for patients with gastrointestinal unindentified complaints: ##STR1## wherein R.sup.1 represents a group such as an alkynyl or cyanoalkyl group; R.sup.2 represents a group such as an amino or acylamino group;R.sup.3 represents a halogen atom;X represents --O-- or --NH--; andA represents an oxygen or sulfur atom.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: February 14, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Shuhei Miyazawa, Shigeki Hibi, Hiroyuki Yoshimura, Takashi Mori, Yorihisa Hoshino, Mitsuo Nagai, Kouichi Kikuchi, Hisashi Shibata, Kazuo Hirota, Takashi Yamanaka, Isao Yamatsu, Masanori Mizuno
  • Patent number: 5382579
    Abstract: A triazolo-1,4-azepine compound of the below given formulas and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases. ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: January 17, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5319139
    Abstract: Compounds of the formula: ##STR1## where R.sup.1 is a hydrogen atom or a lower alkyl group;R.sub.2 is a lower alkoxy group;R.sub.3 is a group ##STR2## Z is represented by the formula: ##STR3## where R.sub.2 and R.sub.3 may be the same or different from each other and each stands for a hydrogen atom or a lower alkyl;Y is represented by the formula: --(CH.sub.2).sub.n -- where n is 0 or an integer of 1 to 2 or a group represented by the formula: ##STR4## where R.sup.2 and R.sup.3 may be the same or different from each other and each stands for a lower alkyl group; andR.sup.4 represents a group of the formula: ##STR5## where p is 0 or an integer of 1 to 3 and R.sup.12 is hydrogen, a halogen atom, a lower alkyl or a lower alkoxy group a hydrogen atom, R.sup.2 is a methoxy group, R.sup.3 is a hydroxy group and R.sup.4 is a benzyl group having anti-inflammatory activity.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: June 7, 1994
    Assignee: Eisai Co. Ltd.
    Inventors: Hiroyuki Yoshimura, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Kazuo Okano, Richard S. J. Clark, Takashi Mori, Shuhei Miyazawa, Ryoichi Hashida, Kenzo Muramoto, Koukichi Harada, Takashi Inoue, Hirsohi Shirota, Kenichi Chiba, Kenichi Kusube, Toru Horie, Takeshi Suzuki, Isao Yamatsu