Patents by Inventor Shigeru Souda

Shigeru Souda 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: 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: 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: 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: 5453524
    Abstract: The present invention provides a phosphorus-containing isoprenoid derivative represented by the following general formula (I) or a pharmacologically acceptable salt thereof, which is useful as a preventive and therapeutic agent for diseases for which a squalene synthetase inhibiting action is efficacious: ##STR1## wherein R.sup.1 and R.sup.2 each represent a hydrogen atom, a lower alkyl, cycloalkyl, alkenyl or alkynyl group, an aryl group which may be substituted, an arylalkyl group in which the aryl group may be substituted, or a heteroaryl or heteroarylalkyl group: R.sup.3 and R.sup.4 each represent a hydrogen atom, a lower alkyl group or an alkali metal; Y represents a group represented by the formula: ##STR2## (wherein R.sup.5 and R.sup.6 each represent a hydrogen atom, a lower alkyl group or an alkali metal or a group represented by the formula: --CO.sub.2 R.sup.7 (wherein R.sup.7 represents a hydrogen atom, a lower alkyl group or an alkali metal); Z represents a group represented by the Formula: --(CH.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: September 26, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Katsuya Tagami, Ichirou Yoshida, Naoki Kobayashi, Yoshio Fukuda, Yoshihito Eguchi, Makoto Nakagawa, Hironobu Hiyoshi, Hironori Ikuta, Makoto Kaino, Kenji Hayashi, Issei Ohtsuka, Shinya Abe, Shigeru Souda
  • 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: 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: 5304553
    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: May 28, 1993
    Date of Patent: April 19, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Kazuo Okano, Shuhei Miyazawa, Richar 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: 5298649
    Abstract: A naphthalene derivative having the formula is new and useful for medicine. ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group or an acyl group;R.sup.2 independently represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a cycloalkyl group, a cycloalkylalkyl group, a hydroxyl group, an aryl group which may be substituted, an arylalkyl group whose aryl group may be substituted, a heteroaryl group, or a heteroarylalkyl group;R.sup.3 and R.sup.4 are the same or different and represent a hydrogen atom, a lower alkyl group, a lower alkenyl group, an aryl group which may have a substituent, an arylalkyl group whose aryl group may be substituted, an arylalkenyl group whose aryl group may be substituted, a cycloalkyl group, an alkoxyalkyl group, a heteroaryl group, a heteroarylalkyl group, a carboxyl group, a carboxyalkyl group, an aminoalkyl group, or a cyano group;R.sup.5 represents a group of the formula, --OR.sup.7, (wherein R.sup.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: March 29, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Makoto Okita, Hiroshi Shirota, Masayuki Tanaka, Toshihiko Kaneko, Katsuya Tagami, Shigeki Hibi, Yasushi Okamoto, Seiichiro Nomoto, Takeshi Suzuki, Kenichi Chiba, Masaki Goto, Ryoichi Hashida, Hideki Ono, Hideto Ohhara, Hideki Sakurai, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5273985
    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: June 4, 1991
    Date of Patent: December 28, 1993
    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: 5239079
    Abstract: A pyridinium salt is useful as an antiulcer and is defined by the following formula. It includes a sulphenamide compound and a pyridinium compound. J is benzoimidazole, K is --S-- or --SSR, Z is hydroxy or oxyalkyl.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: August 24, 1993
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Shuhei Miyazawa, Norihiro Ueda, Katsuya Tagami, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Masatoshi Fujimoto, Manabu Murakami, Kiyoshi Oketani, Hideaki Fujisaki, Hisashi Shibata, Tsuneo Wakabayashi
  • Patent number: 5221671
    Abstract: A triazolo-1,4-di-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: October 17, 1991
    Date of Patent: June 22, 1993
    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: 5162317
    Abstract: A pyridinium salt useful as an antiulcer agent, defined by formula (I) is disclosed. It includes a sulphenamide compound and a pyridinium compound. J is benzimidazole, K is --S-- or --SSR-- and Z is hydroxy or alkoxy.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: November 10, 1992
    Assignee: Esai Co., Ltd.
    Inventors: Shigeru Souda, Shuhei Miyazawa, Norihiro Ueda, Katsuya Tagami, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Masatoshi Fujimoto, Manabu Murakami, Kiyoshi Oketani, Hideaki Fujisaki, Hisashi Shibata, Tsuneo Wakabayashi
  • Patent number: 5134111
    Abstract: A naphthalene derivative having the formula is new and useful for medicine. ##STR1## [wherein R.sup.1 represents a hydrogen atom, a lower alkyl group or an acyl group;R.sup.2 independently represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a cycloalkyl group, a cycloalkylalkyl group, a hydroxyl group, an aryl group which may be substituted, an arylalkyl group whose aryl group may be substituted, a heteroaryl group, or a heteroarylalkyl group;R.sup.3 and R.sup.4 are the same or different and represent a hydrogen atom, a lower alkyl group, a lower alkenyl group, an aryl group which may have a substituent, an arylalkyl group whose aryl group may be substituted, an arylalkenyl group whose aryl group may be substituted, a cycloalkyl group, an alkoxyalkyl group, a heteroaryl group, a heteroarylalkyl group, a carboxy group, a carboxyalkyl group, an aminoalkyl group, or a cyano group;R.sup.5 represents a group of the formula, --OR.sup.7, (wherein R.sup.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: July 28, 1992
    Assignee: Eisai Co., Ltd.
    Inventors: Makoto Okita, Hiroshi Shirota, Masayuki Tanaka, Toshihiko Kaneko, Katsuya Tagami, Shigeki Hibi, Yasushi Okamoto, Seiichiro Nomoto, Takeshi Suzuki, Kenichi Chiba, Masaki Goto, Ryoichi Hashida, Hideki Ono, Hideto Ohhara, Hideki Sakurai, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
  • Patent number: 5075335
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m --, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: December 24, 1991
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
  • Patent number: 5045552
    Abstract: Pyridine derivatives useful for preventing or treating peptic ulcers, pharmaceutical preparations and methods of treating peptic ulcers are described.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: September 3, 1991
    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: 5037827
    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: June 29, 1989
    Date of Patent: August 6, 1991
    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: 4948808
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m--, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: August 14, 1990
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
  • Patent number: 4801603
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m --, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: January 31, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
  • Patent number: 4567180
    Abstract: A carboximide derivative represented by the general formula: ##STR1## wherein X is ##STR2## Z is alkyl, aralkyl, cycloalkyl, cycloalkylalkyl, alkenyl or arylalkenyl, and Y is a substituted or unsubstituted pyridyl, pyrimidyl or phenyl group, and a pharmaceutically acceptable acid addition salt thereof. The carboximide derivative and acid addition salt are useful for treating diabetes and also for depressing the central nervous system. The carboximide derivative may be produced by reacting a sodium alkoxide represented by the general formula: ##STR3## wherein X and Y have the same meanings as defined above, with Z.Hal wherein Hal is a halogen and Z has the same meaning as defined above.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: January 28, 1986
    Assignee: Eisai Co., Ltd.
    Inventors: Noriyasu Hirose, Shigeru Souda, Kazutoshi Miyake, Shizuo Kuriyama, Kazuyasu Usuki, Yasuhiro Akiyama, Naoko Nagaoka, Hidetoshi Kawashima